release: v1.5.0

feat: move Expectations API out of external plugin

.gitattributes

@@ -8,7 +8,7 @@
 .gitattributes           export-ignore
 .gitignore               export-ignore
 phpstan.neon             export-ignore
-phpunit.xml              export-ignore
+/phpunit.xml             export-ignore
 CHANGELOG.md             export-ignore
 CONTRIBUTING.md          export-ignore
 README.md                export-ignore

CHANGELOG.md

@@ -4,10 +4,26 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [v1.5.0 (2021-06-15)](https://github.com/pestphp/pest/compare/v1.4.0...v1.5.0)
+### Changed
+- Moves plugins from the `require` section to the core itself ([#317](https://github.com/pestphp/pest/pull/317)), ([#318](https://github.com/pestphp/pest/pull/318)), ([#320](https://github.com/pestphp/pest/pull/320))
+
+## [v1.4.0 (2021-06-10)](https://github.com/pestphp/pest/compare/v1.3.2...v1.4.0)
+### Added
+- Support for multiple datasets (Matrix) on the `with` method ([#303](https://github.com/pestphp/pest/pull/303))
+- Support for incompleted tests ([49de462](https://github.com/pestphp/pest/commit/49de462250cf9f65f09e13eaf6dcc0e06865b930))
+
+## [v1.3.2 (2021-06-07)](https://github.com/pestphp/pest/compare/v1.3.1...v1.3.2)
+### Fixed 
+- Test cases with the @ symbol in the directory fail ([#308](https://github.com/pestphp/pest/pull/308))
+
 ## [v1.3.1 (2021-06-06)](https://github.com/pestphp/pest/compare/v1.3.0...v1.3.1)
 ### Added
 - Added for PHPUnit 9.5.5 ([#310](https://github.com/pestphp/pest/pull/310))
 
+### Changed
+- Lock minimum Pest plugin versions ([#306](https://github.com/pestphp/pest/pull/306))
+
 ## [v1.3.0 (2021-05-23)](https://github.com/pestphp/pest/compare/v1.2.1...v1.3.0)
 ### Added
 - Named datasets no longer show the arguments ([#302](https://github.com/pestphp/pest/pull/302))
@@ -155,7 +171,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 - Expectation API (TODO)
 - PHPUnit 9.3 and PHP 8 support ([#128](https://github.com/pestphp/pest/pull/128))
-- Fowards `$this` calls to globals ([#169](https://github.com/pestphp/pest/pull/169))
+- Forwards `$this` calls to globals ([#169](https://github.com/pestphp/pest/pull/169))
 
 ### Fixed
 - don't decorate output if --colors=never is set ([36b879f](https://github.com/pestphp/pest/commit/36b879f97d7b187c87a94eb60af5b7d3b7253d56))
@@ -170,7 +186,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - `depends` phpunit feature ([#103](https://github.com/pestphp/pest/pull/103))
 
 ### Fixes
-- datasets name conflit ([#101](https://github.com/pestphp/pest/pull/101))
+- datasets name conflict ([#101](https://github.com/pestphp/pest/pull/101))
 
 ## [v0.2.1 (2020-06-17)](https://github.com/pestphp/pest/compare/v0.2.0...v0.2.1)
 ### Fixes

composer.json

@@ -18,11 +18,8 @@
     ],
     "require": {
         "php": "^7.3 || ^8.0",
-        "nunomaduro/collision": "^5.0",
-        "pestphp/pest-plugin": "^1.0",
-        "pestphp/pest-plugin-coverage": "^1.0",
-        "pestphp/pest-plugin-expectations": "^1.3",
-        "pestphp/pest-plugin-init": "^1.1",
+        "nunomaduro/collision": "^5.4.0",
+        "pestphp/pest-plugin": "^1.0.0",
         "phpunit/phpunit": ">= 9.3.7 <= 9.5.5"
     },
     "autoload": {
@@ -43,9 +40,9 @@
         ]
     },
     "require-dev": {
-        "illuminate/console": "^8.32.1",
-        "illuminate/support": "^8.32.1",
-        "laravel/dusk": "^6.13.0",
+        "illuminate/console": "^8.47.0",
+        "illuminate/support": "^8.47.0",
+        "laravel/dusk": "^6.15.0",
         "pestphp/pest-dev-tools": "dev-master"
     },
     "minimum-stability": "dev",
@@ -77,6 +74,8 @@
         },
         "pest": {
             "plugins": [
+                "Pest\\Plugins\\Coverage",
+                "Pest\\Plugins\\Init",
                 "Pest\\Plugins\\Version"
             ]
         },

phpstan.neon

@@ -24,7 +24,7 @@ parameters:
             message: '#Call to an undefined method PHPUnit\\Framework\\Test::getName\(\)#'
             path: src/Logging
         -
-            message: '#invalid typehint type Pest\\Concerns\\TestCase#'
+            message: '#invalid typehint type Pest\\Concerns\\Testable#'
             path: src/Logging
         -
             message: '#is not subtype of native type PHPUnit\\Framework\\Test#'

src/Concerns/Expectable.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Concerns;
+
+use Pest\Expectation;
+
+/**
+ * @internal
+ */
+trait Expectable
+{
+    /**
+     * Creates a new expectation.
+     *
+     * @param mixed $value
+     */
+    public function expect($value): Expectation
+    {
+        return new Expectation($value);
+    }
+}

src/Concerns/Extendable.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Concerns;
+
+use Closure;
+use Pest\HigherOrderExpectation;
+
+/**
+ * @internal
+ */
+trait Extendable
+{
+    /**
+     * @var array<string, Closure>
+     */
+    private static $extends = [];
+
+    /**
+     * Register a custom extend.
+     */
+    public static function extend(string $name, Closure $extend): void
+    {
+        static::$extends[$name] = $extend;
+    }
+
+    /**
+     * Checks if extend is registered.
+     */
+    public static function hasExtend(string $name): bool
+    {
+        return array_key_exists($name, static::$extends);
+    }
+
+    /**
+     * Dynamically handle calls to the class.
+     *
+     * @param array<int, mixed> $parameters
+     *
+     * @return mixed
+     */
+    public function __call(string $method, array $parameters)
+    {
+        if (!static::hasExtend($method)) {
+            return new HigherOrderExpectation($this, $method, $parameters);
+        }
+
+        /** @var Closure $extend */
+        $extend = static::$extends[$method]->bindTo($this, static::class);
+
+        return $extend(...$parameters);
+    }
+}

src/Concerns/Testable.php

@@ -17,7 +17,7 @@ use Throwable;
  *
  * @internal
  */
-trait TestCase
+trait Testable
 {
     /**
      * The test case description. Contains the first

src/Datasets.php

@@ -51,36 +51,34 @@ final class Datasets
     /**
      * Resolves the current dataset to an array value.
      *
-     * @param Traversable<int|string, mixed>|Closure|iterable<int|string, mixed>|string|null $data
+     * @param array<Closure|iterable<int|string, mixed>|string> $datasets
      *
      * @return array<string, mixed>
      */
-    public static function resolve(string $description, $data): array
+    public static function resolve(string $description, array $datasets): array
     {
         /* @phpstan-ignore-next-line */
-        if (is_null($data) || empty($data)) {
+        if (empty($datasets)) {
             return [$description => []];
         }
 
-        if (is_string($data)) {
-            $data = self::get($data);
-        }
+        $datasets = self::processDatasets($datasets);
 
-        if (is_callable($data)) {
-            $data = call_user_func($data);
-        }
-
-        if ($data instanceof Traversable) {
-            $data = iterator_to_array($data);
-        }
+        $datasetCombinations = self::getDataSetsCombinations($datasets);
 
         $dataSetDescriptions = [];
         $dataSetValues       = [];
 
-        foreach ($data as $key => $values) {
-            $values = is_array($values) ? $values : [$values];
+        foreach ($datasetCombinations as $datasetCombination) {
+            $partialDescriptions = [];
+            $values              = [];
 
-            $dataSetDescriptions[] = $description . self::getDataSetDescription($key, $values);
+            foreach ($datasetCombination as $dataset_data) {
+                $partialDescriptions[] = $dataset_data['label'];
+                $values                = array_merge($values, $dataset_data['values']);
+            }
+
+            $dataSetDescriptions[] = $description . ' with ' . implode(' / ', $partialDescriptions);
             $dataSetValues[]       = $values;
         }
 
@@ -103,6 +101,65 @@ final class Datasets
         return $namedData;
     }
 
+    /**
+     * @param array<Closure|iterable<int|string, mixed>|string> $datasets
+     *
+     * @return array<array>
+     */
+    private static function processDatasets(array $datasets): array
+    {
+        $processedDatasets = [];
+
+        foreach ($datasets as $index => $data) {
+            $processedDataset = [];
+
+            if (is_string($data)) {
+                $datasets[$index] = self::get($data);
+            }
+
+            if (is_callable($datasets[$index])) {
+                $datasets[$index] = call_user_func($datasets[$index]);
+            }
+
+            if ($datasets[$index] instanceof Traversable) {
+                $datasets[$index] = iterator_to_array($datasets[$index]);
+            }
+
+            foreach ($datasets[$index] as $key => $values) {
+                $values             = is_array($values) ? $values : [$values];
+                $processedDataset[] = [
+                    'label'  => self::getDataSetDescription($key, $values),
+                    'values' => $values,
+                ];
+            }
+
+            $processedDatasets[] = $processedDataset;
+        }
+
+        return $processedDatasets;
+    }
+
+    /**
+     * @param array<array> $combinations
+     *
+     * @return array<array>
+     */
+    private static function getDataSetsCombinations(array $combinations): array
+    {
+        $result = [[]];
+        foreach ($combinations as $index => $values) {
+            $tmp = [];
+            foreach ($result as $resultItem) {
+                foreach ($values as $value) {
+                    $tmp[] = array_merge($resultItem, [$index => $value]);
+                }
+            }
+            $result = $tmp;
+        }
+
+        return $result;
+    }
+
     /**
      * @param int|string        $key
      * @param array<int, mixed> $data
@@ -112,9 +169,9 @@ final class Datasets
         $exporter = new Exporter();
 
         if (is_int($key)) {
-            return \sprintf(' with (%s)', $exporter->shortenedRecursiveExport($data));
+            return \sprintf('(%s)', $exporter->shortenedRecursiveExport($data));
         }
 
-        return \sprintf(' with data set "%s"', $key);
+        return \sprintf('data set "%s"', $key);
     }
 }

src/Each.php

@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest;
+
+/**
+ * @internal
+ *
+ * @mixin Expectation
+ */
+final class Each
+{
+    /**
+     * @var Expectation
+     */
+    private $original;
+
+    /**
+     * @var bool
+     */
+    private $opposite = false;
+
+    /**
+     * Creates an expectation on each item of the iterable "value".
+     */
+    public function __construct(Expectation $original)
+    {
+        $this->original = $original;
+    }
+
+    /**
+     * Creates a new expectation.
+     *
+     * @param mixed $value
+     */
+    public function and($value): Expectation
+    {
+        return $this->original->and($value);
+    }
+
+    /**
+     * Creates the opposite expectation for the value.
+     */
+    public function not(): Each
+    {
+        $this->opposite = true;
+
+        return $this;
+    }
+
+    /**
+     * Dynamically calls methods on the class with the given arguments on each item.
+     *
+     * @param array<int|string, mixed> $arguments
+     */
+    public function __call(string $name, array $arguments): Each
+    {
+        foreach ($this->original->value as $item) {
+            /* @phpstan-ignore-next-line */
+            $this->opposite ? expect($item)->not()->$name(...$arguments) : expect($item)->$name(...$arguments);
+        }
+
+        $this->opposite = false;
+
+        return $this;
+    }
+
+    /**
+     * Dynamically calls methods on the class without any arguments on each item.
+     */
+    public function __get(string $name): Each
+    {
+        /* @phpstan-ignore-next-line */
+        return $this->$name();
+    }
+}

src/Expectation.php

@@ -0,0 +1,714 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest;
+
+use BadMethodCallException;
+use Pest\Concerns\Extendable;
+use PHPUnit\Framework\Assert;
+use PHPUnit\Framework\Constraint\Constraint;
+use SebastianBergmann\Exporter\Exporter;
+
+/**
+ * @internal
+ *
+ * @property Expectation $not  Creates the opposite expectation.
+ * @property Each        $each Creates an expectation on each element on the traversable value.
+ */
+final class Expectation
+{
+    use Extendable;
+
+    /**
+     * The expectation value.
+     *
+     * @readonly
+     *
+     * @var mixed
+     */
+    public $value;
+
+    /**
+     * The exporter instance, if any.
+     *
+     * @readonly
+     *
+     * @var Exporter|null
+     */
+    private $exporter;
+
+    /**
+     * Creates a new expectation.
+     *
+     * @param mixed $value
+     */
+    public function __construct($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * Creates a new expectation.
+     *
+     * @param mixed $value
+     */
+    public function and($value): Expectation
+    {
+        return new self($value);
+    }
+
+    /**
+     * Dump the expectation value and end the script.
+     *
+     * @param mixed $arguments
+     *
+     * @return never
+     */
+    public function dd(...$arguments): void
+    {
+        if (function_exists('dd')) {
+            dd($this->value, ...$arguments);
+        }
+
+        var_dump($this->value);
+
+        exit(1);
+    }
+
+    /**
+     * Send the expectation value to Ray along with all given arguments.
+     *
+     * @param mixed $arguments
+     */
+    public function ray(...$arguments): self
+    {
+        if (function_exists('ray')) {
+            // @phpstan-ignore-next-line
+            ray($this->value, ...$arguments);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Creates the opposite expectation for the value.
+     */
+    public function not(): OppositeExpectation
+    {
+        return new OppositeExpectation($this);
+    }
+
+    /**
+     * Creates an expectation on each item of the iterable "value".
+     */
+    public function each(callable $callback = null): Each
+    {
+        if (!is_iterable($this->value)) {
+            throw new BadMethodCallException('Expectation value is not iterable.');
+        }
+
+        if (is_callable($callback)) {
+            foreach ($this->value as $item) {
+                $callback(expect($item));
+            }
+        }
+
+        return new Each($this);
+    }
+
+    /**
+     * Allows you to specify a sequential set of expectations for each item in a iterable "value".
+     */
+    public function sequence(callable ...$callbacks): Expectation
+    {
+        if (!is_iterable($this->value)) {
+            throw new BadMethodCallException('Expectation value is not iterable.');
+        }
+
+        $value  = is_array($this->value) ? $this->value : iterator_to_array($this->value);
+        $keys   = array_keys($value);
+        $values = array_values($value);
+
+        $index = 0;
+
+        while (count($callbacks) < count($values)) {
+            $callbacks[] = $callbacks[$index];
+            $index       = $index < count($values) - 1 ? $index + 1 : 0;
+        }
+
+        foreach ($values as $key => $item) {
+            call_user_func($callbacks[$key], expect($item), expect($keys[$key]));
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that two variables have the same type and
+     * value. Used on objects, it asserts that two
+     * variables reference the same object.
+     *
+     * @param mixed $expected
+     */
+    public function toBe($expected): Expectation
+    {
+        Assert::assertSame($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is empty.
+     */
+    public function toBeEmpty(): Expectation
+    {
+        Assert::assertEmpty($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is true.
+     */
+    public function toBeTrue(): Expectation
+    {
+        Assert::assertTrue($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is false.
+     */
+    public function toBeFalse(): Expectation
+    {
+        Assert::assertFalse($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is greater than $expected.
+     *
+     * @param int|float $expected
+     */
+    public function toBeGreaterThan($expected): Expectation
+    {
+        Assert::assertGreaterThan($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is greater than or equal to $expected.
+     *
+     * @param int|float $expected
+     */
+    public function toBeGreaterThanOrEqual($expected): Expectation
+    {
+        Assert::assertGreaterThanOrEqual($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is less than or equal to $expected.
+     *
+     * @param int|float $expected
+     */
+    public function toBeLessThan($expected): Expectation
+    {
+        Assert::assertLessThan($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is less than $expected.
+     *
+     * @param int|float $expected
+     */
+    public function toBeLessThanOrEqual($expected): Expectation
+    {
+        Assert::assertLessThanOrEqual($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that $needle is an element of the value.
+     *
+     * @param mixed $needle
+     */
+    public function toContain($needle): Expectation
+    {
+        if (is_string($this->value)) {
+            Assert::assertStringContainsString($needle, $this->value);
+        } else {
+            Assert::assertContains($needle, $this->value);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value starts with $expected.
+     */
+    public function toStartWith(string $expected): Expectation
+    {
+        Assert::assertStringStartsWith($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value ends with $expected.
+     */
+    public function toEndWith(string $expected): Expectation
+    {
+        Assert::assertStringEndsWith($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that $count matches the number of elements of the value.
+     */
+    public function toHaveCount(int $count): Expectation
+    {
+        Assert::assertCount($count, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value contains the property $name.
+     *
+     * @param mixed $value
+     */
+    public function toHaveProperty(string $name, $value = null): Expectation
+    {
+        $this->toBeObject();
+
+        Assert::assertTrue(property_exists($this->value, $name));
+
+        if (func_num_args() > 1) {
+            /* @phpstan-ignore-next-line */
+            Assert::assertEquals($value, $this->value->{$name});
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that two variables have the same value.
+     *
+     * @param mixed $expected
+     */
+    public function toEqual($expected): Expectation
+    {
+        Assert::assertEquals($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that two variables have the same value.
+     * The contents of $expected and the $this->value are
+     * canonicalized before they are compared. For instance, when the two
+     * variables $expected and $this->value are arrays, then these arrays
+     * are sorted before they are compared. When $expected and $this->value
+     * are objects, each object is converted to an array containing all
+     * private, protected and public attributes.
+     *
+     * @param mixed $expected
+     */
+    public function toEqualCanonicalizing($expected): Expectation
+    {
+        Assert::assertEqualsCanonicalizing($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the absolute difference between the value and $expected
+     * is lower than $delta.
+     *
+     * @param mixed $expected
+     */
+    public function toEqualWithDelta($expected, float $delta): Expectation
+    {
+        Assert::assertEqualsWithDelta($expected, $this->value, $delta);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is infinite.
+     */
+    public function toBeInfinite(): Expectation
+    {
+        Assert::assertInfinite($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is an instance of $class.
+     *
+     * @param string $class
+     */
+    public function toBeInstanceOf($class): Expectation
+    {
+        /* @phpstan-ignore-next-line */
+        Assert::assertInstanceOf($class, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is an array.
+     */
+    public function toBeArray(): Expectation
+    {
+        Assert::assertIsArray($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type bool.
+     */
+    public function toBeBool(): Expectation
+    {
+        Assert::assertIsBool($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type callable.
+     */
+    public function toBeCallable(): Expectation
+    {
+        Assert::assertIsCallable($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type float.
+     */
+    public function toBeFloat(): Expectation
+    {
+        Assert::assertIsFloat($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type int.
+     */
+    public function toBeInt(): Expectation
+    {
+        Assert::assertIsInt($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type iterable.
+     */
+    public function toBeIterable(): Expectation
+    {
+        Assert::assertIsIterable($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type numeric.
+     */
+    public function toBeNumeric(): Expectation
+    {
+        Assert::assertIsNumeric($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type object.
+     */
+    public function toBeObject(): Expectation
+    {
+        Assert::assertIsObject($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type resource.
+     */
+    public function toBeResource(): Expectation
+    {
+        Assert::assertIsResource($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type scalar.
+     */
+    public function toBeScalar(): Expectation
+    {
+        Assert::assertIsScalar($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is of type string.
+     */
+    public function toBeString(): Expectation
+    {
+        Assert::assertIsString($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a JSON string.
+     */
+    public function toBeJson(): Expectation
+    {
+        Assert::assertIsString($this->value);
+        Assert::assertJson($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is NAN.
+     */
+    public function toBeNan(): Expectation
+    {
+        Assert::assertNan($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is null.
+     */
+    public function toBeNull(): Expectation
+    {
+        Assert::assertNull($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value array has the provided $key.
+     *
+     * @param string|int $key
+     * @param mixed      $value
+     */
+    public function toHaveKey($key, $value = null): Expectation
+    {
+        if (is_object($this->value) && method_exists($this->value, 'toArray')) {
+            $array = $this->value->toArray();
+        } else {
+            $array = (array) $this->value;
+        }
+
+        Assert::assertArrayHasKey($key, $array);
+
+        if (func_num_args() > 1) {
+            Assert::assertEquals($value, $array[$key]);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value array has the provided $keys.
+     *
+     * @param array<int, int|string> $keys
+     */
+    public function toHaveKeys(array $keys): Expectation
+    {
+        foreach ($keys as $key) {
+            $this->toHaveKey($key);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a directory.
+     */
+    public function toBeDirectory(): Expectation
+    {
+        Assert::assertDirectoryExists($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a directory and is readable.
+     */
+    public function toBeReadableDirectory(): Expectation
+    {
+        Assert::assertDirectoryIsReadable($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a directory and is writable.
+     */
+    public function toBeWritableDirectory(): Expectation
+    {
+        Assert::assertDirectoryIsWritable($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a file.
+     */
+    public function toBeFile(): Expectation
+    {
+        Assert::assertFileExists($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a file and is readable.
+     */
+    public function toBeReadableFile(): Expectation
+    {
+        Assert::assertFileIsReadable($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is a file and is writable.
+     */
+    public function toBeWritableFile(): Expectation
+    {
+        Assert::assertFileIsWritable($this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value array matches the given array subset.
+     *
+     * @param array<int|string, mixed> $array
+     */
+    public function toMatchArray($array): Expectation
+    {
+        if (is_object($this->value) && method_exists($this->value, 'toArray')) {
+            $valueAsArray = $this->value->toArray();
+        } else {
+            $valueAsArray = (array) $this->value;
+        }
+
+        foreach ($array as $key => $value) {
+            Assert::assertArrayHasKey($key, $valueAsArray);
+
+            Assert::assertEquals(
+                $value,
+                $valueAsArray[$key],
+                sprintf(
+                    'Failed asserting that an array has a key %s with the value %s.',
+                    $this->export($key),
+                    $this->export($valueAsArray[$key]),
+                ),
+            );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value object matches a subset
+     * of the properties of an given object.
+     *
+     * @param array<string, mixed>|object $object
+     */
+    public function toMatchObject($object): Expectation
+    {
+        foreach ((array) $object as $property => $value) {
+            Assert::assertTrue(property_exists($this->value, $property));
+
+            /* @phpstan-ignore-next-line */
+            $propertyValue = $this->value->{$property};
+            Assert::assertEquals(
+                $value,
+                $propertyValue,
+                sprintf(
+                    'Failed asserting that an object has a property %s with the value %s.',
+                    $this->export($property),
+                    $this->export($propertyValue),
+                ),
+            );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value matches a regular expression.
+     */
+    public function toMatch(string $expression): Expectation
+    {
+        Assert::assertMatchesRegularExpression($expression, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value matches a constraint.
+     */
+    public function toMatchConstraint(Constraint $constraint): Expectation
+    {
+        Assert::assertThat($this->value, $constraint);
+
+        return $this;
+    }
+
+    /**
+     * Exports the given value.
+     *
+     * @param mixed $value
+     */
+    private function export($value): string
+    {
+        if ($this->exporter === null) {
+            $this->exporter = new Exporter();
+        }
+
+        return $this->exporter->export($value);
+    }
+
+    /**
+     * Dynamically calls methods on the class without any arguments
+     * or creates a new higher order expectation.
+     *
+     * @return Expectation|HigherOrderExpectation
+     */
+    public function __get(string $name)
+    {
+        if (!method_exists($this, $name) && !static::hasExtend($name)) {
+            return new HigherOrderExpectation($this, $name);
+        }
+
+        /* @phpstan-ignore-next-line */
+        return $this->{$name}();
+    }
+}

src/Factories/TestCaseFactory.php

@@ -11,9 +11,9 @@ use Pest\Contracts\HasPrintableTestCaseName;
 use Pest\Datasets;
 use Pest\Exceptions\ShouldNotHappen;
 use Pest\Support\HigherOrderMessageCollection;
-use Pest\Support\NullClosure;
 use Pest\Support\Str;
 use Pest\TestSuite;
+use PHPUnit\Framework\Assert;
 use PHPUnit\Framework\TestCase;
 use RuntimeException;
 
@@ -62,9 +62,9 @@ final class TestCaseFactory
     /**
      * Holds the dataset, if any.
      *
-     * @var Closure|iterable<int|string, mixed>|string|null
+     * @var array<Closure|iterable<int|string, mixed>|string>
      */
-    public $dataset;
+    public $datasets = [];
 
     /**
      * The FQN of the test case class.
@@ -79,7 +79,8 @@ final class TestCaseFactory
      * @var array <int, string>
      */
     public $traits = [
-        Concerns\TestCase::class,
+        Concerns\Testable::class,
+        Concerns\Expectable::class,
     ];
 
     /**
@@ -113,7 +114,11 @@ final class TestCaseFactory
     {
         $this->filename    = $filename;
         $this->description = $description;
-        $this->test        = $closure ?? NullClosure::create();
+        $this->test        = $closure ?? function (): void {
+            if (Assert::getCount() === 0) {
+                self::markTestIncomplete(); // @phpstan-ignore-line
+            }
+        };
 
         $this->factoryProxies = new HigherOrderMessageCollection();
         $this->proxies        = new HigherOrderMessageCollection();
@@ -155,7 +160,7 @@ final class TestCaseFactory
             return $testCase;
         };
 
-        $datasets = Datasets::resolve($this->description, $this->dataset);
+        $datasets = Datasets::resolve($this->description, $this->datasets);
 
         return array_map($createTest, array_keys($datasets), $datasets);
     }

src/Functions.php

@@ -3,15 +3,33 @@
 declare(strict_types=1);
 
 use Pest\Datasets;
+use Pest\Expectation;
 use Pest\PendingObjects\AfterEachCall;
 use Pest\PendingObjects\BeforeEachCall;
 use Pest\PendingObjects\TestCall;
 use Pest\PendingObjects\UsesCall;
 use Pest\Support\Backtrace;
+use Pest\Support\Extendable;
 use Pest\Support\HigherOrderTapProxy;
 use Pest\TestSuite;
 use PHPUnit\Framework\TestCase;
 
+/**
+ * Creates a new expectation.
+ *
+ * @param mixed $value the Value
+ *
+ * @return Expectation|Extendable
+ */
+function expect($value = null)
+{
+    if (func_num_args() === 0) {
+        return new Extendable(Expectation::class);
+    }
+
+    return new Expectation($value);
+}
+
 if (!function_exists('beforeAll')) {
     /**
      * Runs the given closure before all tests in the current file.

src/HigherOrderExpectation.php

@@ -0,0 +1,147 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest;
+
+use Pest\Concerns\Expectable;
+
+/**
+ * @internal
+ *
+ * @mixin Expectation
+ */
+final class HigherOrderExpectation
+{
+    use Expectable;
+
+    /**
+     * @var Expectation
+     */
+    private $original;
+
+    /**
+     * @var Expectation|Each
+     */
+    private $expectation;
+
+    /**
+     * @var bool
+     */
+    private $opposite = false;
+
+    /**
+     * @var string
+     */
+    private $name;
+
+    /**
+     * Creates a new higher order expectation.
+     *
+     * @param array<int|string, mixed>|null $parameters
+     * @phpstan-ignore-next-line
+     */
+    public function __construct(Expectation $original, string $name, ?array $parameters = null)
+    {
+        $this->original = $original;
+        $this->name     = $name;
+
+        $this->expectation = $this->expect(
+            is_null($parameters) ? $this->getPropertyValue() : $this->getMethodValue($parameters)
+        );
+    }
+
+    /**
+     * Retrieves the property value from the original expectation.
+     *
+     * @return mixed
+     */
+    private function getPropertyValue()
+    {
+        if (is_array($this->original->value)) {
+            return $this->original->value[$this->name];
+        }
+
+        // @phpstan-ignore-next-line
+        return $this->original->value->{$this->name};
+    }
+
+    /**
+     * Retrieves the value of the method from the original expectation.
+     *
+     * @param array<int|string, mixed> $arguments
+     *
+     * @return mixed
+     */
+    private function getMethodValue(array $arguments)
+    {
+        // @phpstan-ignore-next-line
+        return $this->original->value->{$this->name}(...$arguments);
+    }
+
+    /**
+     * Creates the opposite expectation for the value.
+     */
+    public function not(): HigherOrderExpectation
+    {
+        $this->opposite = !$this->opposite;
+
+        return $this;
+    }
+
+    /**
+     * Dynamically calls methods on the class with the given arguments.
+     *
+     * @param array<int|string, mixed> $arguments
+     */
+    public function __call(string $name, array $arguments): self
+    {
+        if (!$this->originalHasMethod($name)) {
+            return new self($this->original, $name, $arguments);
+        }
+
+        return $this->performAssertion($name, $arguments);
+    }
+
+    /**
+     * Accesses properties in the value or in the expectation.
+     */
+    public function __get(string $name): self
+    {
+        if ($name === 'not') {
+            return $this->not();
+        }
+
+        if (!$this->originalHasMethod($name)) {
+            return new self($this->original, $name);
+        }
+
+        return $this->performAssertion($name, []);
+    }
+
+    /**
+     * Determines if the original expectation has the given method name.
+     */
+    private function originalHasMethod(string $name): bool
+    {
+        return method_exists($this->original, $name) || $this->original::hasExtend($name);
+    }
+
+    /**
+     * Performs the given assertion with the current expectation.
+     *
+     * @param array<int|string, mixed> $arguments
+     */
+    private function performAssertion(string $name, array $arguments): self
+    {
+        $expectation = $this->opposite
+            ? $this->expectation->not()
+            : $this->expectation;
+
+        $this->expectation = $expectation->{$name}(...$arguments); // @phpstan-ignore-line
+
+        $this->opposite = false;
+
+        return $this;
+    }
+}

src/Logging/JUnit.php

@@ -18,7 +18,7 @@ use DOMElement;
 use Exception;
 use function get_class;
 use function method_exists;
-use Pest\Concerns\TestCase;
+use Pest\Concerns\Testable;
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\ExceptionWrapper;
 use PHPUnit\Framework\SelfDescribing;
@@ -266,7 +266,7 @@ final class JUnit extends Printer implements TestListener
     /**
      * A test started.
      *
-     * @param Test|TestCase $test
+     * @param Test|Testable $test
      */
     public function startTest(Test $test): void
     {

src/Logging/TeamCity.php

@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace Pest\Logging;
 
 use function getmypid;
-use Pest\Concerns\TestCase;
+use Pest\Concerns\Testable;
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Test;
 use PHPUnit\Framework\TestResult;
@@ -109,7 +109,7 @@ final class TeamCity extends DefaultResultPrinter
     }
 
     /**
-     * @param Test|TestCase $test
+     * @param Test|Testable $test
      */
     public function startTest(Test $test): void
     {
@@ -127,7 +127,7 @@ final class TeamCity extends DefaultResultPrinter
     }
 
     /**
-     * @param Test|TestCase $test
+     * @param Test|Testable $test
      */
     public function endTest(Test $test, float $time): void
     {
@@ -144,7 +144,7 @@ final class TeamCity extends DefaultResultPrinter
     }
 
     /**
-     * @param Test|TestCase $test
+     * @param Test|Testable $test
      */
     public function addError(Test $test, Throwable $t, float $time): void
     {
@@ -154,7 +154,7 @@ final class TeamCity extends DefaultResultPrinter
     /**
      * @phpstan-ignore-next-line
      *
-     * @param Test|TestCase $test
+     * @param Test|Testable $test
      */
     public function addWarning(Test $test, Warning $e, float $time): void
     {
@@ -208,6 +208,6 @@ final class TeamCity extends DefaultResultPrinter
         /** @var array<string, string> $uses */
         $uses = class_uses($test);
 
-        return in_array(TestCase::class, $uses, true);
+        return in_array(Testable::class, $uses, true);
     }
 }

src/OppositeExpectation.php

@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest;
+
+use PHPUnit\Framework\ExpectationFailedException;
+use SebastianBergmann\Exporter\Exporter;
+
+/**
+ * @internal
+ *
+ * @mixin Expectation
+ */
+final class OppositeExpectation
+{
+    /**
+     * @var Expectation
+     */
+    private $original;
+
+    /**
+     * Creates a new opposite expectation.
+     */
+    public function __construct(Expectation $original)
+    {
+        $this->original = $original;
+    }
+
+    /**
+     * Asserts that the value array not has the provided $keys.
+     *
+     * @param array<int, int|string> $keys
+     */
+    public function toHaveKeys(array $keys): Expectation
+    {
+        foreach ($keys as $key) {
+            try {
+                $this->original->toHaveKey($key);
+            } catch (ExpectationFailedException $e) {
+                continue;
+            }
+
+            $this->throwExpectationFailedException('toHaveKey', [$key]);
+        }
+
+        return $this->original;
+    }
+
+    /**
+     * Handle dynamic method calls into the original expectation.
+     *
+     * @param array<int, mixed> $arguments
+     */
+    public function __call(string $name, array $arguments): Expectation
+    {
+        try {
+            /* @phpstan-ignore-next-line */
+            $this->original->{$name}(...$arguments);
+        } catch (ExpectationFailedException $e) {
+            return $this->original;
+        }
+
+        // @phpstan-ignore-next-line
+        $this->throwExpectationFailedException($name, $arguments);
+    }
+
+    /**
+     * Handle dynamic properties gets into the original expectation.
+     */
+    public function __get(string $name): Expectation
+    {
+        try {
+            /* @phpstan-ignore-next-line */
+            $this->original->{$name};
+        } catch (ExpectationFailedException $e) {
+            return $this->original;
+        }
+
+        // @phpstan-ignore-next-line
+        $this->throwExpectationFailedException($name);
+    }
+
+    /**
+     * Creates a new expectation failed exception with a nice readable message.
+     *
+     * @param array<int, mixed> $arguments
+     */
+    private function throwExpectationFailedException(string $name, array $arguments = []): void
+    {
+        $exporter = new Exporter();
+
+        $toString = function ($argument) use ($exporter): string {
+            return $exporter->shortenedExport($argument);
+        };
+
+        throw new ExpectationFailedException(sprintf('Expecting %s not %s %s.', $toString($this->original->value), strtolower((string) preg_replace('/(?<!\ )[A-Z]/', ' $0', $name)), implode(' ', array_map(function ($argument) use ($toString): string { return $toString($argument); }, $arguments))));
+    }
+}

src/PendingObjects/TestCall.php

@@ -77,11 +77,13 @@ final class TestCall
      * Runs the current test multiple times with
      * each item of the given `iterable`.
      *
-     * @param \Closure|iterable<int|string, mixed>|string $data
+     * @param array<\Closure|iterable<int|string, mixed>|string> $data
      */
-    public function with($data): TestCall
+    public function with(...$data): TestCall
     {
-        $this->testCaseFactory->dataset = $data;
+        foreach ($data as $dataset) {
+            $this->testCaseFactory->datasets[] = $dataset;
+        }
 
         return $this;
     }

src/PendingObjects/UsesCall.php

@@ -68,7 +68,7 @@ final class UsesCall
 
     /**
      * The directories or file where the
-     * class or trais should be used.
+     * class or traits should be used.
      */
     public function in(string ...$targets): void
     {

src/Pest.php

@@ -6,7 +6,7 @@ namespace Pest;
 
 function version(): string
 {
-    return '1.3.0';
+    return '1.5.0';
 }
 
 function testDirectory(string $file = ''): string

src/Plugins/Coverage.php

@@ -0,0 +1,119 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Plugins;
+
+use Pest\Contracts\Plugins\AddsOutput;
+use Pest\Contracts\Plugins\HandlesArguments;
+use Pest\Support\Str;
+use Symfony\Component\Console\Input\ArgvInput;
+use Symfony\Component\Console\Input\InputDefinition;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * @internal
+ */
+final class Coverage implements AddsOutput, HandlesArguments
+{
+    /**
+     * @var string
+     */
+    private const COVERAGE_OPTION = 'coverage';
+
+    /**
+     * @var string
+     */
+    private const MIN_OPTION = 'min';
+
+    /**
+     * Whether should show the coverage or not.
+     *
+     * @var bool
+     */
+    public $coverage = false;
+
+    /**
+     * The minimum coverage.
+     *
+     * @var float
+     */
+    public $coverageMin = 0.0;
+
+    /**
+     * @var OutputInterface
+     */
+    private $output;
+
+    public function __construct(OutputInterface $output)
+    {
+        $this->output = $output;
+    }
+
+    public function handleArguments(array $originals): array
+    {
+        $arguments = array_merge([''], array_values(array_filter($originals, function ($original): bool {
+            foreach ([self::COVERAGE_OPTION, self::MIN_OPTION] as $option) {
+                if ($original === sprintf('--%s', $option) || Str::startsWith($original, sprintf('--%s=', $option))) {
+                    return true;
+                }
+            }
+
+            return false;
+        })));
+
+        $originals = array_flip($originals);
+        foreach ($arguments as $argument) {
+            unset($originals[$argument]);
+        }
+        $originals = array_flip($originals);
+
+        $inputs   = [];
+        $inputs[] = new InputOption(self::COVERAGE_OPTION, null, InputOption::VALUE_NONE);
+        $inputs[] = new InputOption(self::MIN_OPTION, null, InputOption::VALUE_REQUIRED);
+
+        $input = new ArgvInput($arguments, new InputDefinition($inputs));
+        if ((bool) $input->getOption(self::COVERAGE_OPTION)) {
+            $this->coverage      = true;
+            $originals[]         = '--coverage-php';
+            $originals[]         = \Pest\Support\Coverage::getPath();
+        }
+
+        if ($input->getOption(self::MIN_OPTION) !== null) {
+            /* @phpstan-ignore-next-line */
+            $this->coverageMin = (float) $input->getOption(self::MIN_OPTION);
+        }
+
+        return $originals;
+    }
+
+    /**
+     * Allows to add custom output after the test suite was executed.
+     */
+    public function addOutput(int $result): int
+    {
+        if ($result === 0 && $this->coverage) {
+            if (!\Pest\Support\Coverage::isAvailable()) {
+                $this->output->writeln(
+                    "\n  <fg=white;bg=red;options=bold> ERROR </> No code coverage driver is available.</>",
+                );
+                exit(1);
+            }
+
+            $coverage = \Pest\Support\Coverage::report($this->output);
+
+            $result = (int) ($coverage < $this->coverageMin);
+
+            if ($result === 1) {
+                $this->output->writeln(sprintf(
+                    "\n  <fg=white;bg=red;options=bold> FAIL </> Code coverage below expected:<fg=red;options=bold> %s %%</>. Minimum:<fg=white;options=bold> %s %%</>.",
+                    number_format($coverage, 1),
+                    number_format($this->coverageMin, 1)
+                ));
+            }
+        }
+
+        return $result;
+    }
+}

src/Plugins/Init.php

@@ -0,0 +1,128 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Plugins;
+
+use Pest\Console\Thanks;
+use Pest\Contracts\Plugins\HandlesArguments;
+use Pest\TestSuite;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * @internal
+ */
+final class Init implements HandlesArguments
+{
+    /**
+     * The option the triggers the init job.
+     */
+    private const INIT_OPTION = '--init';
+
+    /**
+     * The files that will be created.
+     */
+    private const STUBS = [
+        'phpunit.xml'     => 'phpunit.xml',
+        'Pest.php'        => 'tests/Pest.php',
+        'ExampleTest.php' => 'tests/ExampleTest.php',
+    ];
+
+    /**
+     * @var OutputInterface
+     */
+    private $output;
+
+    /**
+     * @var TestSuite
+     */
+    private $testSuite;
+
+    /**
+     * Creates a new Plugin instance.
+     */
+    public function __construct(TestSuite $testSuite, OutputInterface $output)
+    {
+        $this->testSuite = $testSuite;
+        $this->output    = $output;
+    }
+
+    public function handleArguments(array $arguments): array
+    {
+        if (!array_key_exists(1, $arguments) || $arguments[1] !== self::INIT_OPTION) {
+            return $arguments;
+        }
+
+        unset($arguments[1]);
+
+        $this->init();
+
+        return array_values($arguments);
+    }
+
+    private function init(): void
+    {
+        $testsBaseDir = "{$this->testSuite->rootPath}/tests";
+
+        if (!is_dir($testsBaseDir)) {
+            if (!mkdir($testsBaseDir) && !is_dir($testsBaseDir)) {
+                $this->output->writeln(sprintf(
+                    "\n  <fg=white;bg=red;options=bold> ERROR </> Directory `%s` was not created.</>",
+                    $testsBaseDir
+                ));
+
+                return;
+            }
+
+            $this->output->writeln(
+                '  <fg=black;bg=green;options=bold> DONE </> Created `tests` directory.</>',
+            );
+        }
+
+        foreach (self::STUBS as $from => $to) {
+            $fromPath = __DIR__ . "/../../stubs/init/{$from}";
+            $toPath   = "{$this->testSuite->rootPath}/{$to}";
+
+            if (file_exists($toPath)) {
+                $this->output->writeln(sprintf(
+                    '  <fg=black;bg=yellow;options=bold> INFO </> File `%s` already exists, skipped.</>',
+                    $to
+                ));
+
+                continue;
+            }
+
+            if ($from === 'phpunit.xml' && file_exists($toPath . '.dist')) {
+                $this->output->writeln(sprintf(
+                    '  <fg=black;bg=yellow;options=bold> INFO </> File `%s` already exists, skipped.</>',
+                    $to . '.dist'
+                ));
+
+                continue;
+            }
+
+            if (!copy($fromPath, $toPath)) {
+                $this->output->writeln(sprintf(
+                    '<fg=black;bg=red>[WARNING] Failed to copy stub `%s` to `%s`</>',
+                    $from,
+                    $toPath
+                ));
+
+                continue;
+            }
+
+            $this->output->writeln(sprintf(
+                '  <fg=black;bg=green;options=bold> DONE </> Created `%s` file.</>',
+                $to
+            ));
+        }
+
+        $this->output->writeln(
+            "\n  <fg=black;bg=green;options=bold> DONE </> Pest initialised.</>\n",
+        );
+
+        (new Thanks($this->output))();
+
+        exit(0);
+    }
+}

src/Repositories/TestRepository.php

@@ -19,6 +19,11 @@ use PHPUnit\Framework\TestCase;
  */
 final class TestRepository
 {
+    /**
+     * @var string
+     */
+    private const SEPARATOR = '>>>';
+
     /**
      * @var array<string, TestCaseFactory>
      */
@@ -50,7 +55,7 @@ final class TestRepository
             [$classOrTraits, $groups, $hooks] = $uses;
 
             $setClassName = function (TestCaseFactory $testCase, string $key) use ($path, $classOrTraits, $groups, $startsWith, $hooks): void {
-                [$filename] = explode('@', $key);
+                [$filename] = explode(self::SEPARATOR, $key);
 
                 if ((!is_dir($path) && $filename === $path) || (is_dir($path) && $startsWith($filename, $path))) {
                     foreach ($classOrTraits as $class) { /** @var string $class */
@@ -131,10 +136,10 @@ final class TestRepository
             throw ShouldNotHappen::fromMessage('Trying to create a test without description.');
         }
 
-        if (array_key_exists(sprintf('%s@%s', $test->filename, $test->description), $this->state)) {
+        if (array_key_exists(sprintf('%s%s%s', $test->filename, self::SEPARATOR, $test->description), $this->state)) {
             throw new TestAlreadyExist($test->filename, $test->description);
         }
 
-        $this->state[sprintf('%s@%s', $test->filename, $test->description)] = $test;
+        $this->state[sprintf('%s%s%s', $test->filename, self::SEPARATOR, $test->description)] = $test;
     }
 }

src/Support/Coverage.php

@@ -0,0 +1,169 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Support;
+
+use Pest\Exceptions\ShouldNotHappen;
+use SebastianBergmann\CodeCoverage\CodeCoverage;
+use SebastianBergmann\CodeCoverage\Node\Directory;
+use SebastianBergmann\CodeCoverage\Node\File;
+use SebastianBergmann\Environment\Runtime;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Terminal;
+
+/**
+ * @internal
+ */
+final class Coverage
+{
+    /**
+     * Returns the coverage path.
+     */
+    public static function getPath(): string
+    {
+        return implode(DIRECTORY_SEPARATOR, [
+            dirname(__DIR__, 2),
+            '.temp',
+            'coverage.php',
+        ]);
+    }
+
+    /**
+     * Runs true there is any code
+     * coverage driver available.
+     */
+    public static function isAvailable(): bool
+    {
+        return (new Runtime())->canCollectCodeCoverage();
+    }
+
+    /**
+     * Reports the code coverage report to the
+     * console and returns the result in float.
+     */
+    public static function report(OutputInterface $output): float
+    {
+        if (!file_exists($reportPath = self::getPath())) {
+            throw ShouldNotHappen::fromMessage(sprintf('Coverage not found in path: %s.', $reportPath));
+        }
+
+        /** @var CodeCoverage $codeCoverage */
+        $codeCoverage = require $reportPath;
+        unlink($reportPath);
+
+        $totalWidth = (new Terminal())->getWidth();
+
+        $dottedLineLength = $totalWidth <= 70 ? $totalWidth : 70;
+
+        $totalCoverage = $codeCoverage->getReport()->percentageOfExecutedLines();
+
+        $output->writeln(
+            sprintf(
+                '  <fg=white;options=bold>Cov:    </><fg=default>%s</>',
+                $totalCoverage->asString()
+            )
+        );
+
+        $output->writeln('');
+
+        /** @var Directory<File|Directory> $report */
+        $report = $codeCoverage->getReport();
+
+        foreach ($report->getIterator() as $file) {
+            if (!$file instanceof File) {
+                continue;
+            }
+            $dirname  = dirname($file->id());
+            $basename = basename($file->id(), '.php');
+
+            $name = $dirname === '.' ? $basename : implode(DIRECTORY_SEPARATOR, [
+                $dirname,
+                $basename,
+            ]);
+            $rawName = $dirname === '.' ? $basename : implode(DIRECTORY_SEPARATOR, [
+                $dirname,
+                $basename,
+            ]);
+
+            $linesExecutedTakenSize = 0;
+
+            if ($file->percentageOfExecutedLines()->asString() != '0.00%') {
+                $linesExecutedTakenSize = strlen($uncoveredLines = trim(implode(', ', self::getMissingCoverage($file)))) + 1;
+                $name .= sprintf(' <fg=red>%s</>', $uncoveredLines);
+            }
+
+            $percentage = $file->numberOfExecutableLines() === 0
+                ? '100.0'
+                : number_format($file->percentageOfExecutedLines()->asFloat(), 1, '.', '');
+
+            $takenSize = strlen($rawName . $percentage) + 4 + $linesExecutedTakenSize; // adding 3 space and percent sign
+
+            $percentage = sprintf(
+                '<fg=%s>%s</>',
+                $percentage === '100.0' ? 'green' : ($percentage === '0.0' ? 'red' : 'yellow'),
+                $percentage
+            );
+
+            $output->writeln(sprintf(
+                '  %s %s %s %%',
+                $name,
+                str_repeat('.', max($dottedLineLength - $takenSize, 1)),
+                $percentage
+            ));
+        }
+
+        return $totalCoverage->asFloat();
+    }
+
+    /**
+     * Generates an array of missing coverage on the following format:.
+     *
+     * ```
+     * ['11', '20..25', '50', '60..80'];
+     * ```
+     *
+     * @param File $file
+     *
+     * @return array<int, string>
+     */
+    public static function getMissingCoverage($file): array
+    {
+        $shouldBeNewLine = true;
+
+        $eachLine = function (array $array, array $tests, int $line) use (&$shouldBeNewLine): array {
+            if (count($tests) > 0) {
+                $shouldBeNewLine = true;
+
+                return $array;
+            }
+
+            if ($shouldBeNewLine) {
+                $array[]         = (string) $line;
+                $shouldBeNewLine = false;
+
+                return $array;
+            }
+
+            $lastKey = count($array) - 1;
+
+            if (array_key_exists($lastKey, $array) && strpos($array[$lastKey], '..') !== false) {
+                [$from]          = explode('..', $array[$lastKey]);
+                $array[$lastKey] = $line > $from ? sprintf('%s..%s', $from, $line) : sprintf('%s..%s', $line, $from);
+
+                return $array;
+            }
+
+            $array[$lastKey] = sprintf('%s..%s', $array[$lastKey], $line);
+
+            return $array;
+        };
+
+        $array = [];
+        foreach (array_filter($file->lineCoverageData(), 'is_array') as $line => $tests) {
+            $array = $eachLine($array, $tests, $line);
+        }
+
+        return $array;
+    }
+}

src/Support/Extendable.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Support;
+
+use Closure;
+
+final class Extendable
+{
+    /**
+     * The extendable class.
+     *
+     * @var string
+     */
+    private $extendableClass;
+
+    /**
+     * Creates a new extendable instance.
+     */
+    public function __construct(string $extendableClass)
+    {
+        $this->extendableClass = $extendableClass;
+    }
+
+    /**
+     * Register a custom extend.
+     */
+    public function extend(string $name, Closure $extend): void
+    {
+        $this->extendableClass::extend($name, $extend);
+    }
+}

stubs/init/ExampleTest.php

@@ -0,0 +1,5 @@
+<?php
+
+test('example', function () {
+    expect(true)->toBeTrue();
+});

stubs/init/Pest.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+|--------------------------------------------------------------------------
+| Test Case
+|--------------------------------------------------------------------------
+|
+| The closure you provide to your test functions is always bound to a specific PHPUnit test
+| case class. By default, that class is "PHPUnit\Framework\TestCase". Of course, you may
+| need to change it using the "uses()" function to bind a different classes or traits.
+|
+*/
+
+// uses(Tests\TestCase::class)->in('Feature');
+
+/*
+|--------------------------------------------------------------------------
+| Expectations
+|--------------------------------------------------------------------------
+|
+| When you're writing tests, you often need to check that values meet certain conditions. The
+| "expect()" function gives you access to a set of "expectations" methods that you can use
+| to assert different things. Of course, you may extend the Expectation API at any time.
+|
+*/
+
+expect()->extend('toBeOne', function () {
+    return $this->toBe(1);
+});
+
+/*
+|--------------------------------------------------------------------------
+| Functions
+|--------------------------------------------------------------------------
+|
+| While Pest is very powerful out-of-the-box, you may have some testing code specific to your
+| project that you don't want to repeat in every file. Here you can also expose helpers as
+| global functions to help you to reduce the number of lines of code in your test files.
+|
+*/
+
+function something()
+{
+    // ..
+}

stubs/init/phpunit.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true"
+>
+    <testsuites>
+        <testsuite name="Test Suite">
+            <directory suffix="Test.php">./tests</directory>
+        </testsuite>
+    </testsuites>
+    <coverage processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">./app</directory>
+            <directory suffix=".php">./src</directory>
+        </include>
+    </coverage>
+</phpunit>

tests/.snapshots/success.txt

@@ -17,6 +17,12 @@
   ✓ it gets executed before each test
   ✓ it gets executed before each test once again
 
+   PASS  Tests\Features\Coverage
+  ✓ it has plugin
+  ✓ it adds coverage if --coverage exist
+  ✓ it adds coverage if --min exist
+  ✓ it generates coverage based on file input
+
    PASS  Tests\Features\Datasets
   ✓ it throws exception if dataset does not exist
   ✓ it throws exception if dataset already exist
@@ -51,12 +57,323 @@
   ✓ it creates unique test case names with ('Name 2', Pest\Plugin Object (), true)
   ✓ it creates unique test case names with ('Name 1', Pest\Plugin Object (), true) #3
   ✓ it creates unique test case names - count
+  ✓ lazy multiple datasets with (1) / (3)
+  ✓ lazy multiple datasets with (1) / (4)
+  ✓ lazy multiple datasets with (2) / (3)
+  ✓ lazy multiple datasets with (2) / (4)
+  ✓ lazy multiple datasets did the job right
+  ✓ eager multiple datasets with (1) / (3)
+  ✓ eager multiple datasets with (1) / (4)
+  ✓ eager multiple datasets with (2) / (3)
+  ✓ eager multiple datasets with (2) / (4)
+  ✓ eager multiple datasets did the job right
+  ✓ lazy registered multiple datasets with (1) / (1)
+  ✓ lazy registered multiple datasets with (1) / (2)
+  ✓ lazy registered multiple datasets with (2) / (1)
+  ✓ lazy registered multiple datasets with (2) / (2)
+  ✓ lazy registered multiple datasets did the job right
+  ✓ eager registered multiple datasets with (1) / (1)
+  ✓ eager registered multiple datasets with (1) / (2)
+  ✓ eager registered multiple datasets with (2) / (1)
+  ✓ eager registered multiple datasets with (2) / (2)
+  ✓ eager registered multiple datasets did the job right
+  ✓ eager wrapped registered multiple datasets with (1) / (1)
+  ✓ eager wrapped registered multiple datasets with (1) / (2)
+  ✓ eager wrapped registered multiple datasets with (2) / (1)
+  ✓ eager wrapped registered multiple datasets with (2) / (2)
+  ✓ eager wrapped registered multiple datasets did the job right
+  ✓ named multiple datasets with data set "one" / data set "three"
+  ✓ named multiple datasets with data set "one" / data set "four"
+  ✓ named multiple datasets with data set "two" / data set "three"
+  ✓ named multiple datasets with data set "two" / data set "four"
+  ✓ named multiple datasets did the job right
+  ✓ more than two datasets with (1) / (3) / (5)
+  ✓ more than two datasets with (1) / (3) / (6)
+  ✓ more than two datasets with (1) / (4) / (5)
+  ✓ more than two datasets with (1) / (4) / (6)
+  ✓ more than two datasets with (2) / (3) / (5)
+  ✓ more than two datasets with (2) / (3) / (6)
+  ✓ more than two datasets with (2) / (4) / (5)
+  ✓ more than two datasets with (2) / (4) / (6)
+  ✓ more than two datasets did the job right
 
    PASS  Tests\Features\Exceptions
   ✓ it gives access the the underlying expectException
   ✓ it catch exceptions
   ✓ it catch exceptions and messages
 
+   PASS  Tests\Features\Expect\HigherOrder\methods
+  ✓ it can access methods
+  ✓ it can access multiple methods
+  ✓ it works with not
+  ✓ it can accept arguments
+  ✓ it works with each
+  ✓ it works inside of each
+  ✓ it works with sequence
+  ✓ it can compose complex expectations
+
+   PASS  Tests\Features\Expect\HigherOrder\methodsAndProperties
+  ✓ it can access methods and properties
+
+   PASS  Tests\Features\Expect\HigherOrder\properties
+  ✓ it allows properties to be accessed from the value
+  ✓ it can access multiple properties from the value
+  ✓ it works with not
+  ✓ it works with each
+  ✓ it works inside of each
+  ✓ it works with sequence
+  ✓ it can compose complex expectations
+  ✓ it works with objects
+
+   PASS  Tests\Features\Expect\each
+  ✓ an exception is thrown if the the type is not iterable
+  ✓ it expects on each item
+  ✓ it chains expectations on each item
+  ✓ opposite expectations on each item
+  ✓ chained opposite and non-opposite expectations
+  ✓ it can add expectations via "and"
+  ✓ it accepts callables
+
+   PASS  Tests\Features\Expect\extend
+  ✓ it macros true is true
+  ✓ it macros false is not true
+  ✓ it macros true is true with argument
+  ✓ it macros false is not true with argument
+
+   PASS  Tests\Features\Expect\not
+  ✓ not property calls
+
+   PASS  Tests\Features\Expect\ray
+  ✓ ray calls do not fail when ray is not installed
+
+   PASS  Tests\Features\Expect\sequence
+  ✓ an exception is thrown if the the type is not iterable
+  ✓ allows for sequences of checks to be run on iterable data
+  ✓ loops back to the start if it runs out of sequence items
+  ✓ it works if the number of items in the iterable is smaller than the number of expectations
+  ✓ it works with associative arrays
+
+   PASS  Tests\Features\Expect\toBe
+  ✓ strict comparisons
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeArray
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeBool
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeCallable
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeDirectory
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeEmpty
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeFalse
+  ✓ strict comparisons
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeFile
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeFloat
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeGreatherThan
+  ✓ passes
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeGreatherThanOrEqual
+  ✓ passes
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeInfinite
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeInstanceOf
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeInt
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeIterable
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeJson
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeLessThan
+  ✓ passes
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeLessThanOrEqual
+  ✓ passes
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeNAN
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeNull
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeNumeric
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeObject
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeReadableDirectory
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeReadableFile
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeResource
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeScalar
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeString
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeTrue
+  ✓ strict comparisons
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeWritableDirectory
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeWritableFile
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toContain
+  ✓ passes strings
+  ✓ passes arrays
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toEndWith
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toEqual
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toEqualCanonicalizing
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toEqualWithDelta
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveCount
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveKey
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveKeys
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveProperty
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toMatch
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toMatchArray
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toMatchConstraint
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toMatchObject
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toStartWith
+  ✓ pass
+  ✓ failures
+  ✓ not failures
+
    PASS  Tests\Features\Helpers
   ✓ it can set/get properties on $this
   ✓ it throws error if property do not exist
@@ -69,6 +386,15 @@
   ✓ it proxies calls to object
   ✓ it is capable doing multiple assertions
 
+   WARN  Tests\Features\Incompleted
+  … incompleted
+  … it is incompleted
+  … it is incompleted even with method calls like skip
+  … it is incompleted even with method calls like group
+  ✓ it is not incompleted because of expect
+  ✓ it is not incompleted because of assert
+  ✓ it is not incompleted because of test with assertions
+
    PASS  Tests\Features\It
   ✓ it is a test
   ✓ it is a higher order message test
@@ -78,6 +404,7 @@
   ✓ it will throw exception from call if no macro exists
 
    PASS  Tests\Features\PendingHigherOrderTests
+  ✓ get 'foo'
   ✓ get 'foo' → get 'bar' → expect true → toBeTrue 
   ✓ get 'foo' → expect true → toBeTrue 
 
@@ -122,6 +449,10 @@
    PASS  Tests\PHPUnit\CustomAffixes\AdditionalFileExtensionspec
   ✓ it runs file names like `AdditionalFileExtension.spec.php`
 
+   PASS  Tests\PHPUnit\CustomAffixes\FolderWithAn\ExampleTest
+  ✓ custom traits can be used
+  ✓ trait applied in this file
+
    PASS  Tests\PHPUnit\CustomAffixes\ManyExtensionsclasstest
   ✓ it runs file names like `ManyExtensions.class.test.php`
 
@@ -170,6 +501,9 @@
    PASS  Tests\Unit\Datasets
   ✓ it show only the names of named datasets in their description
   ✓ it show the actual dataset of non-named datasets in their description
+  ✓ it show only the names of multiple named datasets in their description
+  ✓ it show the actual dataset of multiple non-named datasets in their description
+  ✓ it show the correct description for mixed named and not-named datasets
 
    PASS  Tests\Unit\Plugins\Version
   ✓ it outputs the version when --version is used
@@ -220,5 +554,5 @@
   ✓ it is a test
   ✓ it uses correct parent class
 
-  Tests:  7 skipped, 120 passed
+  Tests:  4 incompleted, 7 skipped, 340 passed
   

tests/Features/BeforeAll.php

@@ -8,11 +8,11 @@ beforeAll(function () use ($foo) {
 });
 
 it('gets executed before tests', function () use ($foo) {
-    expect($foo->bar)->toBe(1);
+    expect($foo)->bar->toBe(1);
 
     $foo->bar = 'changed';
 });
 
 it('do not get executed before each test', function () use ($foo) {
-    expect($foo->bar)->toBe('changed');
+    expect($foo)->bar->toBe('changed');
 });

tests/Features/Coverage.php

@@ -0,0 +1,58 @@
+<?php
+
+use Pest\Plugins\Coverage as CoveragePlugin;
+use Pest\Support\Coverage;
+use Pest\TestSuite;
+use Symfony\Component\Console\Output\ConsoleOutput;
+
+it('has plugin')->assertTrue(class_exists(CoveragePlugin::class));
+
+it('adds coverage if --coverage exist', function () {
+    $plugin = new CoveragePlugin(new ConsoleOutput());
+    $testSuite = TestSuite::getInstance();
+
+    expect($plugin->coverage)->toBeFalse();
+    $arguments = $plugin->handleArguments([]);
+    expect($arguments)->toEqual([]);
+    expect($plugin->coverage)->toBeFalse();
+
+    $arguments = $plugin->handleArguments(['--coverage']);
+    expect($arguments)->toEqual(['--coverage-php', Coverage::getPath()]);
+    expect($plugin->coverage)->toBeTrue();
+});
+
+it('adds coverage if --min exist', function () {
+    $plugin = new CoveragePlugin(new ConsoleOutput());
+    expect($plugin->coverageMin)->toEqual(0.0);
+
+    expect($plugin->coverage)->toBeFalse();
+    $plugin->handleArguments([]);
+    expect($plugin->coverageMin)->toEqual(0.0);
+
+    $plugin->handleArguments(['--min=2']);
+    expect($plugin->coverageMin)->toEqual(2.0);
+
+    $plugin->handleArguments(['--min=2.4']);
+    expect($plugin->coverageMin)->toEqual(2.4);
+});
+
+it('generates coverage based on file input', function () {
+    expect(Coverage::getMissingCoverage(new class() {
+        public function lineCoverageData(): array
+        {
+            return [
+                1   => ['foo'],
+                2   => ['bar'],
+                4   => [],
+                5   => [],
+                6   => [],
+                7   => null,
+                100 => null,
+                101 => ['foo'],
+                102 => [],
+            ];
+        }
+    }))->toEqual([
+        '4..6', '102',
+    ]);
+});

tests/Features/Datasets.php

@@ -137,3 +137,89 @@ it('creates unique test case names', function (string $name, Plugin $plugin, boo
 it('creates unique test case names - count', function () use (&$counter) {
     expect($counter)->toBe(6);
 });
+
+$datasets_a = [[1], [2]];
+$datasets_b = [[3], [4]];
+
+test('lazy multiple datasets', function ($text_a, $text_b) use ($state, $datasets_a, $datasets_b) {
+    $state->text .= $text_a . $text_b;
+    expect($datasets_a)->toContain([$text_a]);
+    expect($datasets_b)->toContain([$text_b]);
+})->with($datasets_a, $datasets_b);
+
+test('lazy multiple datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('12121212121213142324');
+});
+
+$state->text = '';
+
+test('eager multiple datasets', function ($text_a, $text_b) use ($state, $datasets_a, $datasets_b) {
+    $state->text .= $text_a . $text_b;
+    expect($datasets_a)->toContain([$text_a]);
+    expect($datasets_b)->toContain([$text_b]);
+})->with(function () use ($datasets_a) {
+    return $datasets_a;
+})->with(function () use ($datasets_b) {
+    return $datasets_b;
+});
+
+test('eager multiple datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('1212121212121314232413142324');
+});
+
+test('lazy registered multiple datasets', function ($text_a, $text_b) use ($state, $datasets) {
+    $state->text .= $text_a . $text_b;
+    expect($datasets)->toContain([$text_a]);
+    expect($datasets)->toContain([$text_b]);
+})->with('numbers.array')->with('numbers.array');
+
+test('lazy registered multiple datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('121212121212131423241314232411122122');
+});
+
+test('eager registered multiple datasets', function ($text_a, $text_b) use ($state, $datasets) {
+    $state->text .= $text_a . $text_b;
+    expect($datasets)->toContain([$text_a]);
+    expect($datasets)->toContain([$text_b]);
+})->with('numbers.array')->with('numbers.closure');
+
+test('eager registered multiple datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('12121212121213142324131423241112212211122122');
+});
+
+test('eager wrapped registered multiple datasets', function ($text_a, $text_b) use ($state, $datasets) {
+    $state->text .= $text_a . $text_b;
+    expect($datasets)->toContain([$text_a]);
+    expect($datasets)->toContain([$text_b]);
+})->with('numbers.closure.wrapped')->with('numbers.closure');
+
+test('eager wrapped registered multiple datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('1212121212121314232413142324111221221112212211122122');
+});
+
+test('named multiple datasets', function ($text_a, $text_b) use ($state, $datasets_a, $datasets_b) {
+    $state->text .= $text_a . $text_b;
+    expect($datasets_a)->toContain([$text_a]);
+    expect($datasets_b)->toContain([$text_b]);
+})->with([
+    'one' => [1],
+    'two' => [2],
+])->with([
+    'three' => [3],
+    'four'  => [4],
+]);
+
+test('named multiple datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('121212121212131423241314232411122122111221221112212213142324');
+});
+
+test('more than two datasets', function ($text_a, $text_b, $text_c) use ($state, $datasets_a, $datasets_b) {
+    $state->text .= $text_a . $text_b . $text_c;
+    expect($datasets_a)->toContain([$text_a]);
+    expect($datasets_b)->toContain([$text_b]);
+    expect([5, 6])->toContain($text_c);
+})->with($datasets_a, $datasets_b)->with([5, 6]);
+
+test('more than two datasets did the job right', function () use ($state) {
+    expect($state->text)->toBe('121212121212131423241314232411122122111221221112212213142324135136145146235236245246');
+});

tests/Features/Expect/HigherOrder/methods.php

@@ -0,0 +1,100 @@
+<?php
+
+it('can access methods', function () {
+    expect(new HasMethods())
+        ->name()->toBeString()->toEqual('Has Methods');
+});
+
+it('can access multiple methods', function () {
+    expect(new HasMethods())
+        ->name()->toBeString()->toEqual('Has Methods')
+        ->quantity()->toBeInt()->toEqual(20);
+});
+
+it('works with not', function () {
+    expect(new HasMethods())
+        ->name()->not->toEqual('world')->toEqual('Has Methods')
+        ->quantity()->toEqual(20)->not()->toEqual('bar')->not->toBeNull;
+});
+
+it('can accept arguments', function () {
+    expect(new HasMethods())
+        ->multiply(5, 4)->toBeInt->toEqual(20);
+});
+
+it('works with each', function () {
+    expect(new HasMethods())
+        ->attributes()->toBeArray->each->not()->toBeNull
+        ->attributes()->each(function ($attribute) {
+            $attribute->not->toBeNull();
+        });
+});
+
+it('works inside of each', function () {
+    expect(new HasMethods())
+        ->books()->each(function ($book) {
+            $book->title->not->toBeNull->cost->toBeGreaterThan(19);
+        });
+});
+
+it('works with sequence', function () {
+    expect(new HasMethods())
+        ->books()->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+it('can compose complex expectations', function () {
+    expect(new HasMethods())
+        ->toBeObject()
+        ->name()->toEqual('Has Methods')->not()->toEqual('bar')
+        ->quantity()->not->toEqual('world')->toEqual(20)->toBeInt
+        ->multiply(3, 4)->not->toBeString->toEqual(12)
+        ->attributes()->toBeArray()
+        ->books()->toBeArray->each->not->toBeEmpty
+        ->books()->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+class HasMethods
+{
+    public function name()
+    {
+        return 'Has Methods';
+    }
+
+    public function quantity()
+    {
+        return 20;
+    }
+
+    public function multiply($x, $y)
+    {
+        return $x * $y;
+    }
+
+    public function attributes()
+    {
+        return [
+            'name'     => $this->name(),
+            'quantity' => $this->quantity(),
+        ];
+    }
+
+    public function books()
+    {
+        return [
+            [
+                'title' => 'Foo',
+                'cost'  => 20,
+            ],
+            [
+                'title' => 'Bar',
+                'cost'  => 30,
+            ],
+        ];
+    }
+}

tests/Features/Expect/HigherOrder/methodsAndProperties.php

@@ -0,0 +1,50 @@
+<?php
+
+it('can access methods and properties', function () {
+    expect(new HasMethodsAndProperties())
+        ->name->toEqual('Has Methods and Properties')->not()->toEqual('bar')
+        ->multiply(3, 4)->not->toBeString->toEqual(12)
+        ->posts->each(function ($post) {
+            $post->is_published->toBeTrue;
+        })->books()->toBeArray()
+        ->posts->toBeArray->each->not->toBeEmpty
+        ->books()->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+class HasMethodsAndProperties
+{
+    public $name = 'Has Methods and Properties';
+
+    public $posts = [
+        [
+            'is_published' => true,
+            'title'        => 'Foo',
+        ],
+        [
+            'is_published' => true,
+            'title'        => 'Bar',
+        ],
+    ];
+
+    public function books()
+    {
+        return [
+            [
+                'title' => 'Foo',
+                'cost'  => 20,
+            ],
+            [
+                'title' => 'Bar',
+                'cost'  => 30,
+            ],
+        ];
+    }
+
+    public function multiply($x, $y)
+    {
+        return $x * $y;
+    }
+}

tests/Features/Expect/HigherOrder/properties.php

@@ -0,0 +1,75 @@
+<?php
+
+it('allows properties to be accessed from the value', function () {
+    expect(['foo' => 1])->foo->toBeInt()->toEqual(1);
+});
+
+it('can access multiple properties from the value', function () {
+    expect(['foo' => 'bar', 'hello' => 'world'])
+        ->foo->toBeString()->toEqual('bar')
+        ->hello->toBeString()->toEqual('world');
+});
+
+it('works with not', function () {
+    expect(['foo' => 'bar', 'hello' => 'world'])
+        ->foo->not->not->toEqual('bar')
+        ->foo->not->toEqual('world')->toEqual('bar')
+        ->hello->toEqual('world')->not()->toEqual('bar')->not->toBeNull;
+});
+
+it('works with each', function () {
+    expect(['numbers' => [1, 2, 3, 4], 'words' => ['hey', 'there']])
+        ->numbers->toEqual([1, 2, 3, 4])->each->toBeInt->toBeLessThan(5)
+        ->words->each(function ($word) {
+            $word->toBeString()->not->toBeInt();
+        });
+});
+
+it('works inside of each', function () {
+    expect(['books' => [['title' => 'Foo', 'cost' => 20], ['title' => 'Bar', 'cost' => 30]]])
+        ->books->each(function ($book) {
+            $book->title->not->toBeNull->cost->toBeGreaterThan(19);
+        });
+});
+
+it('works with sequence', function () {
+    expect(['books' => [['title' => 'Foo', 'cost' => 20], ['title' => 'Bar', 'cost' => 30]]])
+        ->books->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+it('can compose complex expectations', function () {
+    expect(['foo' => 'bar', 'numbers' => [1, 2, 3, 4]])
+        ->toContain('bar')->toBeArray()
+        ->numbers->toEqual([1, 2, 3, 4])->not()->toEqual('bar')->each->toBeInt
+        ->foo->not->toEqual('world')->toEqual('bar')
+        ->numbers->toBeArray();
+});
+
+it('works with objects', function () {
+    expect(new HasProperties())
+        ->name->toEqual('foo')->not->toEqual('world')
+        ->posts->toHaveCount(2)->each(function ($post) { $post->is_published->toBeTrue(); })
+        ->posts->sequence(
+            function ($post) { $post->title->toEqual('Foo'); },
+            function ($post) { $post->title->toEqual('Bar'); },
+        );
+});
+
+class HasProperties
+{
+    public $name = 'foo';
+
+    public $posts = [
+        [
+            'is_published' => true,
+            'title'        => 'Foo',
+        ],
+        [
+            'is_published' => true,
+            'title'        => 'Bar',
+        ],
+    ];
+}

tests/Features/Expect/each.php

@@ -0,0 +1,89 @@
+<?php
+
+use Pest\Expectation;
+
+test('an exception is thrown if the the type is not iterable', function () {
+    expect('Foobar')->each()->toEqual('Foobar');
+})->throws(BadMethodCallException::class, 'Expectation value is not iterable.');
+
+it('expects on each item', function () {
+    expect([1, 1, 1])
+        ->each()
+        ->toEqual(1);
+
+    expect(static::getCount())->toBe(3); // + 1 assertion
+
+    expect([1, 1, 1])
+        ->each
+        ->toEqual(1);
+
+    expect(static::getCount())->toBe(7);
+});
+
+it('chains expectations on each item', function () {
+    expect([1, 1, 1])
+        ->each()
+        ->toBeInt()
+        ->toEqual(1);
+
+    expect(static::getCount())->toBe(6); // + 1 assertion
+
+    expect([2, 2, 2])
+        ->each
+        ->toBeInt
+        ->toEqual(2);
+
+    expect(static::getCount())->toBe(13);
+});
+
+test('opposite expectations on each item', function () {
+    expect([1, 2, 3])
+        ->each()
+        ->not()
+        ->toEqual(4);
+
+    expect(static::getCount())->toBe(3);
+
+    expect([1, 2, 3])
+        ->each()
+        ->not->toBeString;
+
+    expect(static::getCount())->toBe(7);
+});
+
+test('chained opposite and non-opposite expectations', function () {
+    expect([1, 2, 3])
+        ->each()
+        ->not()
+        ->toEqual(4)
+        ->toBeInt();
+
+    expect(static::getCount())->toBe(6);
+});
+
+it('can add expectations via "and"', function () {
+    expect([1, 2, 3])
+        ->each()
+        ->toBeInt // + 3
+        ->and([4, 5, 6])
+        ->each
+        ->toBeLessThan(7) // + 3
+        ->not
+        ->toBeLessThan(3)
+        ->toBeGreaterThan(3) // + 3
+        ->and('Hello World')
+        ->toBeString // + 1
+        ->toEqual('Hello World'); // + 1
+
+    expect(static::getCount())->toBe(14);
+});
+
+it('accepts callables', function () {
+    expect([1, 2, 3])->each(function ($number) {
+        expect($number)->toBeInstanceOf(Expectation::class);
+        expect($number->value)->toBeInt();
+        $number->toBeInt->not->toBeString;
+    });
+
+    expect(static::getCount())->toBe(12);
+});

tests/Features/Expect/extend.php

@@ -0,0 +1,29 @@
+<?php
+
+expect()->extend('toBeAMacroExpectation', function () {
+    $this->toBeTrue();
+
+    return $this;
+});
+
+expect()->extend('toBeAMacroExpectationWithArguments', function (bool $value) {
+    $this->toBe($value);
+
+    return $this;
+});
+
+it('macros true is true', function () {
+    expect(true)->toBeAMacroExpectation();
+});
+
+it('macros false is not true', function () {
+    expect(false)->not->toBeAMacroExpectation();
+});
+
+it('macros true is true with argument', function () {
+    expect(true)->toBeAMacroExpectationWithArguments(true);
+});
+
+it('macros false is not true with argument', function () {
+    expect(false)->not->toBeAMacroExpectationWithArguments(true);
+});

tests/Features/Expect/not.php

@@ -0,0 +1,10 @@
+<?php
+
+test('not property calls', function () {
+    expect(true)
+        ->toBeTrue()
+        ->not()->toBeFalse()
+        ->not->toBeFalse
+        ->and(false)
+        ->toBeFalse();
+});

tests/Features/Expect/ray.php

@@ -0,0 +1,5 @@
+<?php
+
+test('ray calls do not fail when ray is not installed', function () {
+    expect(true)->ray()->toBe(true);
+});

tests/Features/Expect/sequence.php

@@ -0,0 +1,46 @@
+<?php
+
+test('an exception is thrown if the the type is not iterable', function () {
+    expect('Foobar')->each->sequence();
+})->throws(BadMethodCallException::class, 'Expectation value is not iterable.');
+
+test('allows for sequences of checks to be run on iterable data', function () {
+    expect([1, 2, 3])
+        ->sequence(
+            function ($expectation) { $expectation->toBeInt()->toEqual(1); },
+            function ($expectation) { $expectation->toBeInt()->toEqual(2); },
+            function ($expectation) { $expectation->toBeInt()->toEqual(3); },
+        );
+
+    expect(static::getCount())->toBe(6);
+});
+
+test('loops back to the start if it runs out of sequence items', function () {
+    expect([1, 2, 3, 1, 2, 3, 1, 2])
+        ->sequence(
+            function ($expectation) { $expectation->toBeInt()->toEqual(1); },
+            function ($expectation) { $expectation->toBeInt()->toEqual(2); },
+            function ($expectation) { $expectation->toBeInt()->toEqual(3); },
+        );
+
+    expect(static::getCount())->toBe(16);
+});
+
+test('it works if the number of items in the iterable is smaller than the number of expectations', function () {
+    expect([1, 2])
+        ->sequence(
+            function ($expectation) { $expectation->toBeInt()->toEqual(1); },
+            function ($expectation) { $expectation->toBeInt()->toEqual(2); },
+            function ($expectation) { $expectation->toBeInt()->toEqual(3); },
+        );
+
+    expect(static::getCount())->toBe(4);
+});
+
+test('it works with associative arrays', function () {
+    expect(['foo' => 'bar', 'baz' => 'boom'])
+        ->sequence(
+            function ($expectation, $key) { $expectation->toEqual('bar'); $key->toEqual('foo'); },
+            function ($expectation, $key) { $expectation->toEqual('boom'); $key->toEqual('baz'); },
+        );
+});

tests/Features/Expect/toBe.php

@@ -0,0 +1,20 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+expect(true)->toBeTrue()->and(false)->toBeFalse();
+
+test('strict comparisons', function () {
+    $nuno = new stdClass();
+    $dries = new stdClass();
+
+    expect($nuno)->toBe($nuno)->not->toBe($dries);
+});
+
+test('failures', function () {
+    expect(1)->toBe(2);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(1)->not->toBe(1);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeArray.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect([1, 2, 3])->toBeArray();
+    expect('1, 2, 3')->not->toBeArray();
+});
+
+test('failures', function () {
+    expect(null)->toBeArray();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(['a', 'b', 'c'])->not->toBeArray();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeBool.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(true)->toBeBool();
+    expect(0)->not->toBeBool();
+});
+
+test('failures', function () {
+    expect(null)->toBeBool();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(false)->not->toBeBool();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeCallable.php

@@ -0,0 +1,18 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(function () {})->toBeCallable();
+    expect(null)->not->toBeCallable();
+});
+
+test('failures', function () {
+    $hello = 5;
+
+    expect($hello)->toBeCallable();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(function () { return 42; })->not->toBeCallable();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeDirectory.php

@@ -0,0 +1,17 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    $temp = sys_get_temp_dir();
+
+    expect($temp)->toBeDirectory();
+});
+
+test('failures', function () {
+    expect('/random/path/whatever')->toBeDirectory();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('.')->not->toBeDirectory();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeEmpty.php

@@ -0,0 +1,18 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect([])->toBeEmpty();
+    expect(null)->toBeEmpty();
+});
+
+test('failures', function () {
+    expect([1, 2])->toBeEmpty();
+    expect(' ')->toBeEmpty();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect([])->not->toBeEmpty();
+    expect(null)->not->toBeEmpty();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeFalse.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('strict comparisons', function () {
+    expect(false)->toBeFalse();
+});
+
+test('failures', function () {
+    expect('')->toBeFalse();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(false)->not->toBe(false);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeFile.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    touch($this->tempFile = sys_get_temp_dir() . '/fake.file');
+});
+
+afterEach(function () {
+    unlink($this->tempFile);
+});
+
+test('pass', function () {
+    expect($this->tempFile)->toBeFile();
+});
+
+test('failures', function () {
+    expect('/random/path/whatever.file')->toBeFile();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect($this->tempFile)->not->toBeFile();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeFloat.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(1.0)->toBeFloat();
+    expect(1)->not->toBeFloat();
+});
+
+test('failures', function () {
+    expect(42)->toBeFloat();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(log(3))->not->toBeFloat();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeGreatherThan.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes', function () {
+    expect(42)->toBeGreaterThan(41);
+    expect(4)->toBeGreaterThan(3.9);
+});
+
+test('failures', function () {
+    expect(4)->toBeGreaterThan(4);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(5)->not->toBeGreaterThan(4);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeGreatherThanOrEqual.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes', function () {
+    expect(42)->toBeGreaterThanOrEqual(41);
+    expect(4)->toBeGreaterThanOrEqual(4);
+});
+
+test('failures', function () {
+    expect(4)->toBeGreaterThanOrEqual(4.1);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(5)->not->toBeGreaterThanOrEqual(5);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeInfinite.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(log(0))->toBeInfinite();
+    expect(log(1))->not->toBeInfinite();
+});
+
+test('failures', function () {
+    expect(asin(2))->toBeInfinite();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(INF)->not->toBeInfinite();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeInstanceOf.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(new Exception())->toBeInstanceOf(Exception::class);
+    expect(new Exception())->not->toBeInstanceOf(RuntimeException::class);
+});
+
+test('failures', function () {
+    expect(new Exception())->toBeInstanceOf(RuntimeException::class);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(new Exception())->not->toBeInstanceOf(Exception::class);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeInt.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(42)->toBeInt();
+    expect(42.0)->not->toBeInt();
+});
+
+test('failures', function () {
+    expect(42.0)->toBeInt();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(6 * 7)->not->toBeInt();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeIterable.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect([])->toBeIterable();
+    expect(null)->not->toBeIterable();
+});
+
+test('failures', function () {
+    expect(42)->toBeIterable();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    function gen(): iterable
+    {
+        yield 1;
+        yield 2;
+        yield 3;
+    }
+
+    expect(gen())->not->toBeIterable();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeJson.php

@@ -0,0 +1,17 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('{"hello":"world"}')->toBeJson();
+    expect('foo')->not->toBeJson();
+    expect('{"hello"')->not->toBeJson();
+});
+
+test('failures', function () {
+    expect(':"world"}')->toBeJson();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('{"hello":"world"}')->not->toBeJson();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeLessThan.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes', function () {
+    expect(41)->toBeLessThan(42);
+    expect(4)->toBeLessThan(5);
+});
+
+test('failures', function () {
+    expect(4)->toBeLessThan(4);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(5)->not->toBeLessThan(6);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeLessThanOrEqual.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes', function () {
+    expect(41)->toBeLessThanOrEqual(42);
+    expect(4)->toBeLessThanOrEqual(4);
+});
+
+test('failures', function () {
+    expect(4)->toBeLessThanOrEqual(3.9);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(5)->not->toBeLessThanOrEqual(5);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeNAN.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(asin(2))->toBeNan();
+    expect(log(0))->not->toBeNan();
+});
+
+test('failures', function () {
+    expect(1)->toBeNan();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(acos(1.5))->not->toBeNan();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeNull.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(null)->toBeNull();
+    expect('')->not->toBeNull();
+});
+
+test('failures', function () {
+    expect('hello')->toBeNull();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(null)->not->toBeNull();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeNumeric.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(42)->toBeNumeric();
+    expect('A')->not->toBeNumeric();
+});
+
+test('failures', function () {
+    expect(null)->toBeNumeric();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(6 * 7)->not->toBeNumeric();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeObject.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect((object) ['a' => 1])->toBeObject();
+    expect(['a' => 1])->not->toBeObject();
+});
+
+test('failures', function () {
+    expect(null)->toBeObject();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect((object) 'ciao')->not->toBeObject();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeReadableDirectory.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(sys_get_temp_dir())->toBeReadableDirectory();
+});
+
+test('failures', function () {
+    expect('/random/path/whatever')->toBeReadableDirectory();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(sys_get_temp_dir())->not->toBeReadableDirectory();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeReadableFile.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    touch($this->tempFile = sys_get_temp_dir() . '/fake.file');
+});
+
+afterEach(function () {
+    unlink($this->tempFile);
+});
+
+test('pass', function () {
+    expect($this->tempFile)->toBeReadableFile();
+});
+
+test('failures', function () {
+    expect('/random/path/whatever.file')->toBeReadableFile();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect($this->tempFile)->not->toBeReadableFile();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeResource.php

@@ -0,0 +1,22 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+$resource = tmpfile();
+
+afterAll(function () use ($resource) {
+    fclose($resource);
+});
+
+test('pass', function () use ($resource) {
+    expect($resource)->toBeResource();
+    expect(null)->not->toBeResource();
+});
+
+test('failures', function () {
+    expect(null)->toBeResource();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () use ($resource) {
+    expect($resource)->not->toBeResource();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeScalar.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(1.1)->toBeScalar();
+});
+
+test('failures', function () {
+    expect(null)->toBeScalar();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(42)->not->toBeScalar();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeString.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('1.1')->toBeString();
+    expect(1.1)->not->toBeString();
+});
+
+test('failures', function () {
+    expect(null)->toBeString();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('42')->not->toBeString();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeTrue.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('strict comparisons', function () {
+    expect(true)->toBeTrue();
+});
+
+test('failures', function () {
+    expect('')->toBeTrue();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(false)->not->toBe(false);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeWritableDirectory.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(sys_get_temp_dir())->toBeWritableDirectory();
+});
+
+test('failures', function () {
+    expect('/random/path/whatever')->toBeWritableDirectory();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(sys_get_temp_dir())->not->toBeWritableDirectory();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeWritableFile.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    touch($this->tempFile = sys_get_temp_dir() . '/fake.file');
+});
+
+afterEach(function () {
+    unlink($this->tempFile);
+});
+
+test('pass', function () {
+    expect($this->tempFile)->toBeWritableFile();
+});
+
+test('failures', function () {
+    expect('/random/path/whatever.file')->toBeWritableFile();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect($this->tempFile)->not->toBeWritableFile();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toContain.php

@@ -0,0 +1,19 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes strings', function () {
+    expect([1, 2, 42])->toContain(42);
+});
+
+test('passes arrays', function () {
+    expect('Nuno')->toContain('Nu');
+});
+
+test('failures', function () {
+    expect([1, 2, 42])->toContain(3);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect([1, 2, 42])->not->toContain(42);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toEndWith.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('username')->toEndWith('name');
+});
+
+test('failures', function () {
+    expect('username')->toEndWith('password');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('username')->not->toEndWith('name');
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toEqual.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('00123')->toEqual(123);
+});
+
+test('failures', function () {
+    expect(['a', 'b', 'c'])->toEqual(['a', 'b']);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('042')->not->toEqual(42);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toEqualCanonicalizing.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect([1, 2, 3])->toEqualCanonicalizing([3, 1, 2]);
+    expect(['g', 'a', 'z'])->not->toEqualCanonicalizing(['a', 'z']);
+});
+
+test('failures', function () {
+    expect([3, 2, 1])->toEqualCanonicalizing([1, 2]);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(['a', 'b', 'c'])->not->toEqualCanonicalizing(['b', 'a', 'c']);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toEqualWithDelta.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(1.0)->toEqualWithDelta(1.3, .4);
+});
+
+test('failures', function () {
+    expect(1.0)->toEqualWithDelta(1.5, .1);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(1.0)->not->toEqualWithDelta(1.6, .7);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveCount.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect([1, 2, 3])->toHaveCount(3);
+});
+
+test('failures', function () {
+    expect([1, 2, 3])->toHaveCount(4);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect([1, 2, 3])->not->toHaveCount(3);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveKey.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(['a' => 1, 'b', 'c' => 'world'])->toHaveKey('c');
+});
+
+test('failures', function () {
+    expect(['a' => 1, 'b', 'c' => 'world'])->toHaveKey('hello');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(['a' => 1, 'hello' => 'world', 'c'])->not->toHaveKey('hello');
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveKeys.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(['a' => 1, 'b', 'c' => 'world'])->toHaveKeys(['a', 'c']);
+});
+
+test('failures', function () {
+    expect(['a' => 1, 'b', 'c' => 'world'])->toHaveKeys(['a', 'd']);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(['a' => 1, 'hello' => 'world', 'c'])->not->toHaveKeys(['hello', 'c']);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveProperty.php

@@ -0,0 +1,22 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+$obj          = new stdClass();
+$obj->foo     = 'bar';
+$obj->fooNull = null;
+
+test('pass', function () use ($obj) {
+    expect($obj)->toHaveProperty('foo');
+    expect($obj)->toHaveProperty('foo', 'bar');
+    expect($obj)->toHaveProperty('fooNull');
+    expect($obj)->toHaveProperty('fooNull', null);
+});
+
+test('failures', function () use ($obj) {
+    expect($obj)->toHaveProperty('bar');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () use ($obj) {
+    expect($obj)->not->toHaveProperty('foo');
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toMatch.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('Hello World')->toMatch('/^hello wo.*$/i');
+});
+
+test('failures', function () {
+    expect('Hello World')->toMatch('/^hello$/i');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('Hello World')->not->toMatch('/^hello wo.*$/i');
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toMatchArray.php

@@ -0,0 +1,31 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    $this->user = [
+        'id'    => 1,
+        'name'  => 'Nuno',
+        'email' => 'enunomaduro@gmail.com',
+    ];
+});
+
+test('pass', function () {
+    expect($this->user)->toMatchArray([
+        'name'  => 'Nuno',
+        'email' => 'enunomaduro@gmail.com',
+    ]);
+});
+
+test('failures', function () {
+    expect($this->user)->toMatchArray([
+        'name'  => 'Not the same name',
+        'email' => 'enunomaduro@gmail.com',
+    ]);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect($this->user)->not->toMatchArray([
+        'id' => 1,
+    ]);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toMatchConstraint.php

@@ -0,0 +1,16 @@
+<?php
+
+use PHPUnit\Framework\Constraint\IsTrue;
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect(true)->toMatchConstraint(new IsTrue());
+});
+
+test('failures', function () {
+    expect(false)->toMatchConstraint(new IsTrue());
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(true)->not->toMatchConstraint(new IsTrue());
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toMatchObject.php

@@ -0,0 +1,31 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    $this->user = (object) [
+        'id'    => 1,
+        'name'  => 'Nuno',
+        'email' => 'enunomaduro@gmail.com',
+    ];
+});
+
+test('pass', function () {
+    expect($this->user)->toMatchObject([
+        'name'  => 'Nuno',
+        'email' => 'enunomaduro@gmail.com',
+    ]);
+});
+
+test('failures', function () {
+    expect($this->user)->toMatchObject([
+        'name'  => 'Not the same name',
+        'email' => 'enunomaduro@gmail.com',
+    ]);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect($this->user)->not->toMatchObject([
+        'id' => 1,
+    ]);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toStartWith.php

@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('username')->toStartWith('user');
+});
+
+test('failures', function () {
+    expect('username')->toStartWith('password');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('username')->not->toStartWith('user');
+})->throws(ExpectationFailedException::class);

tests/Features/Incompleted.php

@@ -0,0 +1,17 @@
+<?php
+
+test('incompleted');
+
+it('is incompleted');
+
+it('is incompleted even with method calls like skip')->skip(false);
+
+it('is incompleted even with method calls like group')->group('wtv');
+
+it('is not incompleted because of expect')->expect(true)->toBeTrue();
+
+it('is not incompleted because of assert')->assertTrue(true);
+
+it('is not incompleted because of test with assertions', function () {
+    expect(true)->toBeTrue();
+});

tests/Features/It.php

@@ -1,7 +1,7 @@
 <?php
 
 it('is a test', function () {
-    $this->assertArrayHasKey('key', ['key' => 'foo']);
+    expect(['key' => 'foo'])->toHaveKey('key')->key->toBeString();
 });
 
 it('is a higher order message test')->expect(true)->toBeTrue();

tests/Features/PendingHigherOrderTests.php

@@ -26,5 +26,6 @@ trait Gettable
     }
 }
 
+get('foo'); // not incomplete because closure is created...
 get('foo')->get('bar')->expect(true)->toBeTrue();
 get('foo')->expect(true)->toBeTrue();

tests/PHPUnit/CustomAffixes/FolderWithAn@/ExampleTest.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+class MyCustomClassTest extends PHPUnit\Framework\TestCase
+{
+    public function assertTrueIsTrue()
+    {
+        $this->assertTrue(true);
+    }
+}
+
+uses(MyCustomClassTest::class);
+
+test('custom traits can be used', function () {
+    $this->assertTrueIsTrue();
+});
+
+test('trait applied in this file')->assertTrueIsTrue();

tests/Unit/Datasets.php

@@ -4,8 +4,10 @@ use Pest\Datasets;
 
 it('show only the names of named datasets in their description', function () {
     $descriptions = array_keys(Datasets::resolve('test description', [
-        'one' => [1],
-        'two' => [[2]],
+        [
+            'one' => [1],
+            'two' => [[2]],
+        ],
     ]));
 
     expect($descriptions[0])->toBe('test description with data set "one"');
@@ -14,10 +16,66 @@ it('show only the names of named datasets in their description', function () {
 
 it('show the actual dataset of non-named datasets in their description', function () {
     $descriptions = array_keys(Datasets::resolve('test description', [
-        [1],
-        [[2]],
+        [
+            [1],
+            [[2]],
+        ],
     ]));
 
     expect($descriptions[0])->toBe('test description with (1)');
     expect($descriptions[1])->toBe('test description with (array(2))');
 });
+
+it('show only the names of multiple named datasets in their description', function () {
+    $descriptions = array_keys(Datasets::resolve('test description', [
+        [
+            'one' => [1],
+            'two' => [[2]],
+        ],
+        [
+            'three' => [3],
+            'four'  => [[4]],
+        ],
+    ]));
+
+    expect($descriptions[0])->toBe('test description with data set "one" / data set "three"');
+    expect($descriptions[1])->toBe('test description with data set "one" / data set "four"');
+    expect($descriptions[2])->toBe('test description with data set "two" / data set "three"');
+    expect($descriptions[3])->toBe('test description with data set "two" / data set "four"');
+});
+
+it('show the actual dataset of multiple non-named datasets in their description', function () {
+    $descriptions = array_keys(Datasets::resolve('test description', [
+        [
+            [1],
+            [[2]],
+        ],
+        [
+            [3],
+            [[4]],
+        ],
+    ]));
+
+    expect($descriptions[0])->toBe('test description with (1) / (3)');
+    expect($descriptions[1])->toBe('test description with (1) / (array(4))');
+    expect($descriptions[2])->toBe('test description with (array(2)) / (3)');
+    expect($descriptions[3])->toBe('test description with (array(2)) / (array(4))');
+});
+
+it('show the correct description for mixed named and not-named datasets', function () {
+    $descriptions = array_keys(Datasets::resolve('test description', [
+        [
+            'one' => [1],
+            [[2]],
+        ],
+        [
+            [3],
+            'four' => [[4]],
+        ],
+    ]));
+
+    expect($descriptions[0])->toBe('test description with data set "one" / (3)');
+    expect($descriptions[1])->toBe('test description with data set "one" / data set "four"');
+    expect($descriptions[2])->toBe('test description with (array(2)) / (3)');
+    expect($descriptions[3])->toBe('test description with (array(2)) / data set "four"');
+});