release: v1.19.0

Add `toHaveProperties`

.github/workflows/tests.yml

@@ -8,10 +8,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        php: ['7.3', '7.4', '8.0']
+        php: ['7.3', '7.4', '8.0', '8.1']
         dependency-version: [prefer-lowest, prefer-stable]
+        parallel: ['', '--parallel']
 
-    name: PHP ${{ matrix.php }} - ${{ matrix.os }} - ${{ matrix.dependency-version }}
+    name: PHP ${{ matrix.php }} - ${{ matrix.os }} - ${{ matrix.dependency-version }} - ${{ matrix.parallel }}
 
     steps:
     - name: Checkout
@@ -29,16 +30,11 @@ jobs:
         echo "::add-matcher::${{ runner.tool_cache }}/php.json"
         echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
-    - name: Install PHP 7 dependencies
+    - name: Install PHP dependencies
       run: composer update --${{ matrix.dependency-version }} --no-interaction --no-progress
-      if: "matrix.php < 8"
-
-    - name: Install PHP 8 dependencies
-      run: composer update --${{ matrix.dependency-version }} --ignore-platform-req=php --no-interaction --no-progress
-      if: "matrix.php >= 8"
 
     - name: Unit Tests
-      run: php bin/pest --colors=always --exclude-group=integration
+      run: php bin/pest --colors=always --exclude-group=integration ${{ matrix.parallel }}
 
     - name: Integration Tests
       run: php bin/pest --colors=always --group=integration

.php-cs-fixer.dist.php

@@ -3,7 +3,6 @@
 $finder = PhpCsFixer\Finder::create()
     ->in(__DIR__ . DIRECTORY_SEPARATOR . 'tests')
     ->in(__DIR__ . DIRECTORY_SEPARATOR . 'bin')
-    ->in(__DIR__ . DIRECTORY_SEPARATOR . 'scripts')
     ->in(__DIR__ . DIRECTORY_SEPARATOR . 'stubs')
     ->in(__DIR__ . DIRECTORY_SEPARATOR . 'src')
     ->append(['.php-cs-fixer.dist.php']);

CHANGELOG.md

@@ -4,6 +4,69 @@ 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/).
 
+## [v1.19.0 (2021-09-20)](https://github.com/pestphp/pest/compare/v1.18.0...v1.19.0)
+### Added
+- PHP 8.1 support ([e6c7d68](https://github.com/pestphp/pest/commit/e6c7d68defaec8efe01e71e15dd8d8c45b0cf60f))
+
+## [v1.18.0 (2021-08-30)](https://github.com/pestphp/pest/compare/v1.17.0...v1.18.0)
+### Added
+- `toHaveLength` expectation ([#386](https://github.com/pestphp/pest/pull/386))
+- `nunomaduro/collision:^6.0` support ([4ae482c](https://github.com/pestphp/pest/commit/4ae482c7073fb77782b8a4b5738ef1fcea0f82ab))
+
+## [v1.17.0 (2021-08-26)](https://github.com/pestphp/pest/compare/v1.16.0...v1.17.0)
+### Added
+- `toThrow` expectation ([#361](https://github.com/pestphp/pest/pull/361))
+
+## [v1.16.0 (2021-08-19)](https://github.com/pestphp/pest/compare/v1.15.0...v1.16.0)
+### Added
+- Support for new parallel options ([#369](https://github.com/pestphp/pest/pull/369))
+
+## [v1.15.0 (2021-08-04)](https://github.com/pestphp/pest/compare/v1.14.0...v1.15.0)
+### Added
+- `toBeTruthy` and `toBeFalsy` ([#367](https://github.com/pestphp/pest/pull/367))
+
+## [v1.14.0 (2021-08-03)](https://github.com/pestphp/pest/compare/v1.13.0...v1.14.0)
+### Added
+- A new bound closure that allows you to access the test case in Datasets ([#364](https://github.com/pestphp/pest/pull/364))
+
+## [v1.13.0 (2021-08-02)](https://github.com/pestphp/pest/compare/v1.12.0...v1.13.0)
+### Added
+- A cleaner output when running the Pest runner in PhpStorm ([#350](https://github.com/pestphp/pest/pull/350)) 
+- `toBeIn` expectation ([#363](https://github.com/pestphp/pest/pull/363))
+
+### Fixed
+- `skip` with false condition marking test as skipped ([22b822c](https://github.com/pestphp/pest/commit/22b822ce87a3d19d84960fa5c93eb286820b525d))
+
+## [v1.12.0 (2021-07-26)](https://github.com/pestphp/pest/compare/v1.11.0...v1.12.0)
+### Added
+- `--force` option to override tests in `pest:test` artisan command ([#353](https://github.com/pestphp/pest/pull/353))
+- Support for PHPUnit `^9.3.7` ([ca9d783](https://github.com/pestphp/pest/commit/ca9d783cf942a2caabc85ff7a728c7f28350c67a))
+
+### Fixed
+- `beforeAll` and `afterAll` behind called multiple times per test ([#357](https://github.com/pestphp/pest/pull/357))
+
+## [v1.11.0 (2021-07-21)](https://github.com/pestphp/pest/compare/v1.10.0...v1.11.0)
+### Added
+- Support for interacting with datasets in higher order tests ([#352](https://github.com/pestphp/pest/pull/352))
+
+### Changed
+- The unit test stub now uses the expectation API ([#348](https://github.com/pestphp/pest/pull/348))
+
+### Fixed
+- PhpStorm will no longer show 0 assertions in the output ([#349](https://github.com/pestphp/pest/pull/349))
+
+## [v1.10.0 (2021-07-12)](https://github.com/pestphp/pest/compare/v1.9.1...v1.10.0)
+### Added
+- The ability to use higher order expectations inside higher order tests ([#341](https://github.com/pestphp/pest/pull/341))
+
+## [v1.9.1 (2021-07-11)](https://github.com/pestphp/pest/compare/v1.9.0...v1.9.1)
+### Fixed
+- Callable `expect` values in higher order tests failing if the value was an existing method name ([#334](https://github.com/pestphp/pest/pull/344)) 
+
+## [v1.9.0 (2021-07-09)](https://github.com/pestphp/pest/compare/v1.8.0...v1.9.0)
+### Changed
+- You may now pass just an exception message when using the `throws` method ([#339](https://github.com/pestphp/pest/pull/339)) 
+
 ## [v1.8.0 (2021-07-08)](https://github.com/pestphp/pest/compare/v1.7.1...v1.8.0)
 ### Added
 - A new `tap` and test case aware `expect` methods for higher order tests ([#331](https://github.com/pestphp/pest/pull/331))

CONTRIBUTING.md

@@ -31,6 +31,10 @@ composer lint
 ```
 ## Tests
 
+Update the snapshots:
+```bash
+composer update:snapshots
+```
 Run all tests:
 ```bash
 composer test

README.md

@@ -21,8 +21,12 @@ We would like to extend our thanks to the following sponsors for funding Pest de
 
 ### Premium Sponsors
 
-- **[Scout APM](https://scoutapm.com)**
 - **[Akaunting](https://akaunting.com)**
-- **[Meema](https://meema.io/)**
+- **[Auth0](https://auth0.com)**
+- **[Codecourse](https://codecourse.com/)**
+- **[Fathom Analytics](https://usefathom.com/)**
+- **[Meema](https://meema.io)**
+- **[Scout APM](https://scoutapm.com)**
+- **[Spatie](https://spatie.be)**
 
-Pest was created by **[Nuno Maduro](https://twitter.com/enunomaduro)** under the **[Sponsorware license](https://github.com/sponsorware/docs)**. It got open-sourced and is now licensed under the **[MIT license](https://opensource.org/licenses/MIT)**.
+Pest is an open-sourced software licensed under the **[MIT license](https://opensource.org/licenses/MIT)**.

RELEASE.md

@@ -6,7 +6,7 @@ When releasing a new version of Pest there are some checks and updates that need
 - On the GitHub repository, check the contents of [github.com/pestphp/pest/compare/{latest_version}...master](https://github.com/pestphp/pest/compare/{latest_version}...master) and update the [changelog](CHANGELOG.md) file with the main changes for this release
 - Update the version number in [src/Pest.php](src/Pest.php)
 - Run the tests locally using: `composer test`
-- Commit the CHANGELOG and Pest file with the message: `git commit -m "docs: update changelog"`
+- Commit the CHANGELOG and Pest file with the message: `git commit -m "release: vX.X.X"`
 - Push the changes to GitHub
 - Check that the CI is passing as expected: [github.com/pestphp/pest/actions](https://github.com/pestphp/pest/actions)
 - Tag and push the tag with `git tag vX.X.X && git push --tags`

bin/pest

@@ -3,9 +3,9 @@
 
 use NunoMaduro\Collision\Provider;
 use Pest\Actions\ValidatesEnvironment;
-use Pest\Console\Command;
 use Pest\Support\Container;
 use Pest\TestSuite;
+use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\ArgvInput;
 use Symfony\Component\Console\Output\ConsoleOutput;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -27,7 +27,7 @@ use Symfony\Component\Console\Output\OutputInterface;
 
     (new Provider())->register();
 
-    // get $rootPath based on $autoloadPath
+    // Get $rootPath based on $autoloadPath
     $rootPath = dirname($autoloadPath, 2);
     $argv = new ArgvInput();
 
@@ -42,14 +42,22 @@ use Symfony\Component\Console\Output\OutputInterface;
 
     ValidatesEnvironment::in($testSuite);
 
-    // lets remove any arguments that PHPUnit does not understand
+    $args = $_SERVER['argv'];
+
+    // Let's remove any arguments that PHPUnit does not understand
     if ($argv->hasParameterOption('--test-directory')) {
-        foreach ($_SERVER['argv'] as $key => $value) {
+        foreach ($args as $key => $value) {
             if (strpos($value, '--test-directory') !== false) {
-                unset($_SERVER['argv'][$key]);
+                unset($args[$key]);
             }
         }
     }
 
-    exit($container->get(Command::class)->run($_SERVER['argv']));
+    if (($runInParallel = $argv->hasParameterOption(['--parallel', '-p'])) && !class_exists(\Pest\Parallel\Command::class)) {
+        $output->writeln("Parallel support requires the Pest Parallel plugin. Run <fg=yellow;options=bold>`composer require --dev pestphp/pest-plugin-parallel`</> first.");
+        exit(Command::FAILURE);
+    }
+
+    $command = $runInParallel ? \Pest\Parallel\Command::class : \Pest\Console\Command::class;
+    exit($container->get($command)->run($args));
 })();

composer.json

@@ -18,9 +18,9 @@
     ],
     "require": {
         "php": "^7.3 || ^8.0",
-        "nunomaduro/collision": "^5.4.0",
+        "nunomaduro/collision": "^5.4.0|^6.0",
         "pestphp/pest-plugin": "^1.0.0",
-        "phpunit/phpunit": ">= 9.3.7 <= 9.5.6"
+        "phpunit/phpunit": "^9.5.5"
     },
     "autoload": {
         "psr-4": {
@@ -43,7 +43,8 @@
         "illuminate/console": "^8.47.0",
         "illuminate/support": "^8.47.0",
         "laravel/dusk": "^6.15.0",
-        "pestphp/pest-dev-tools": "dev-master"
+        "pestphp/pest-dev-tools": "dev-master",
+        "pestphp/pest-plugin-parallel": "^1.0"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
@@ -57,14 +58,16 @@
     "scripts": {
         "lint": "php-cs-fixer fix -v",
         "test:lint": "php-cs-fixer fix -v --dry-run",
-        "test:types": "phpstan analyse --ansi --memory-limit=0",
+        "test:types": "phpstan analyse --ansi --memory-limit=-1",
         "test:unit": "php bin/pest --colors=always --exclude-group=integration",
+        "test:parallel": "php bin/pest -p --colors=always --exclude-group=integration",
         "test:integration": "php bin/pest --colors=always --group=integration",
         "update:snapshots": "REBUILD_SNAPSHOTS=true php bin/pest --colors=always",
         "test": [
             "@test:lint",
             "@test:types",
             "@test:unit",
+            "@test:parallel",
             "@test:integration"
         ]
     },

phpstan.neon

@@ -7,7 +7,6 @@ parameters:
     level: max
     paths:
         - src
-        - scripts
 
     checkMissingIterableValueType: true
     checkGenericClassInNonGenericObjectType: false

scripts/compile.php

@@ -1,37 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-$globalsFilePath = implode(DIRECTORY_SEPARATOR, [
-    dirname(__DIR__),
-    'vendor',
-    'phpunit',
-    'phpunit',
-    'src',
-    'Framework',
-    'Assert',
-    'Functions.php',
-]);
-
-$compiledFilePath = implode(DIRECTORY_SEPARATOR, [dirname(__DIR__), 'compiled', 'globals.php']);
-
-/* @phpstan-ignore-next-line */
-@unlink($compiledFilePath);
-
-$replace = function ($contents, $string, $by) {
-    return str_replace($string, $by, $contents);
-};
-
-$remove = function ($contents, $string) {
-    return str_replace($string, '', $contents);
-};
-
-$contents = file_get_contents($globalsFilePath);
-$contents = $replace($contents, 'namespace PHPUnit\Framework;', 'use PHPUnit\Framework\Assert;');
-$contents = $remove($contents, 'use ArrayAccess;');
-$contents = $remove($contents, 'use Countable;');
-$contents = $remove($contents, 'use DOMDocument;');
-$contents = $remove($contents, 'use DOMElement;');
-$contents = $remove($contents, 'use Throwable;');
-
-file_put_contents(implode(DIRECTORY_SEPARATOR, [dirname(__DIR__), 'compiled', 'globals.php']), $contents);

src/Actions/AddsDefaults.php

@@ -30,7 +30,7 @@ final class AddsDefaults
         }
 
         if ($arguments[self::PRINTER] === \PHPUnit\Util\Log\TeamCity::class) {
-            $arguments[self::PRINTER] = new TeamCity($arguments['verbose'] ?? false, $arguments['colors'] ?? DefaultResultPrinter::COLOR_ALWAYS);
+            $arguments[self::PRINTER] = new TeamCity(null, $arguments['verbose'] ?? false, $arguments['colors'] ?? DefaultResultPrinter::COLOR_ALWAYS);
         }
 
         // Load our junit logger instead.

src/Actions/AddsTests.php

@@ -22,8 +22,6 @@ final class AddsTests
     {
         self::removeTestClosureWarnings($testSuite);
 
-        // @todo refactor this...
-
         $testSuites = [];
         $pestTestSuite->tests->build($pestTestSuite, function (TestCase $testCase) use (&$testSuites): void {
             $testCaseClass = get_class($testCase);

src/Actions/InteractsWithPlugins.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Actions;
+
+use Pest\Contracts\Plugins\AddsOutput;
+use Pest\Contracts\Plugins\HandlesArguments;
+use Pest\Plugin\Loader;
+
+/**
+ * @internal
+ */
+final class InteractsWithPlugins
+{
+    /**
+     * Transform the input arguments by passing it to the relevant plugins.
+     *
+     * @param array<int, string> $argv
+     *
+     * @return array<int, string>
+     */
+    public static function handleArguments(array $argv): array
+    {
+        $plugins = Loader::getPlugins(HandlesArguments::class);
+
+        /** @var HandlesArguments $plugin */
+        foreach ($plugins as $plugin) {
+            $argv = $plugin->handleArguments($argv);
+        }
+
+        return $argv;
+    }
+
+    /**
+     * Provides an opportunity for any plugins that want
+     * to provide additional output after test execution.
+     */
+    public static function addOutput(int $result): int
+    {
+        $plugins = Loader::getPlugins(AddsOutput::class);
+
+        /** @var AddsOutput $plugin */
+        foreach ($plugins as $plugin) {
+            $result = $plugin->addOutput($result);
+        }
+
+        return $result;
+    }
+}

src/Concerns/Logging/WritesToConsole.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Concerns\Logging;
+
+/**
+ * @internal
+ */
+trait WritesToConsole
+{
+    private function writeSuccess(string $message): void
+    {
+        $this->writePestTestOutput($message, 'fg-green, bold', '✓');
+    }
+
+    private function writeError(string $message): void
+    {
+        $this->writePestTestOutput($message, 'fg-red, bold', '⨯');
+    }
+
+    private function writeWarning(string $message): void
+    {
+        $this->writePestTestOutput($message, 'fg-yellow, bold', '-');
+    }
+
+    private function writePestTestOutput(string $message, string $color, string $symbol): void
+    {
+        $this->writeWithColor($color, "$symbol ", false);
+        $this->write($message);
+        $this->writeNewLine();
+    }
+}

src/Concerns/Testable.php

@@ -73,6 +73,8 @@ trait Testable
     {
         $this->__test        = $test;
         $this->__description = $description;
+        self::$beforeAll     = null;
+        self::$afterAll      = null;
 
         parent::__construct('__test', $data);
     }
@@ -271,7 +273,19 @@ trait Testable
      */
     public function __test()
     {
-        return $this->__callClosure($this->__test, func_get_args());
+        return $this->__callClosure($this->__test, $this->resolveTestArguments(func_get_args()));
+    }
+
+    /**
+     * Resolve the passed arguments. Any Closures will be bound to the testcase and resolved.
+     *
+     * @throws Throwable
+     */
+    private function resolveTestArguments(array $arguments): array
+    {
+        return array_map(function ($data) {
+            return $data instanceof Closure ? $this->__callClosure($data, []) : $data;
+        }, $arguments);
     }
 
     /**

src/Console/Command.php

@@ -6,11 +6,9 @@ namespace Pest\Console;
 
 use Pest\Actions\AddsDefaults;
 use Pest\Actions\AddsTests;
+use Pest\Actions\InteractsWithPlugins;
 use Pest\Actions\LoadStructure;
 use Pest\Actions\ValidatesConfiguration;
-use Pest\Contracts\Plugins\AddsOutput;
-use Pest\Contracts\Plugins\HandlesArguments;
-use Pest\Plugin\Loader;
 use Pest\Plugins\Version;
 use Pest\Support\Container;
 use Pest\TestSuite;
@@ -57,23 +55,12 @@ final class Command extends BaseCommand
      */
     protected function handleArguments(array $argv): void
     {
-        /*
-         * First, let's call all plugins that want to handle arguments
-         */
-        $plugins = Loader::getPlugins(HandlesArguments::class);
+        $argv = InteractsWithPlugins::handleArguments($argv);
 
-        /** @var HandlesArguments $plugin */
-        foreach ($plugins as $plugin) {
-            $argv = $plugin->handleArguments($argv);
-        }
-
-        /*
-         * Next, as usual, let's send the console arguments to PHPUnit.
-         */
         parent::handleArguments($argv);
 
         /*
-         * Finally, let's validate the configuration. Making
+         * Let's validate the configuration. Making
          * sure all options are yet supported by Pest.
          */
         ValidatesConfiguration::in($this->arguments);
@@ -128,16 +115,7 @@ final class Command extends BaseCommand
         LoadStructure::in($this->testSuite->rootPath);
 
         $result = parent::run($argv, false);
-
-        /*
-         * Let's call all plugins that want to add output after test execution
-         */
-        $plugins = Loader::getPlugins(AddsOutput::class);
-
-        /** @var AddsOutput $plugin */
-        foreach ($plugins as $plugin) {
-            $result = $plugin->addOutput($result);
-        }
+        $result = InteractsWithPlugins::addOutput($result);
 
         exit($result);
     }

src/Exceptions/DatasetMissing.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Exceptions;
+
+use BadFunctionCallException;
+use NunoMaduro\Collision\Contracts\RenderlessEditor;
+use NunoMaduro\Collision\Contracts\RenderlessTrace;
+use Symfony\Component\Console\Exception\ExceptionInterface;
+
+/**
+ * Creates a new instance of dataset is not present for test that has arguments.
+ *
+ * @internal
+ */
+final class DatasetMissing extends BadFunctionCallException implements ExceptionInterface, RenderlessEditor, RenderlessTrace
+{
+    /**
+     * Create new exception instance.
+     *
+     * @param array<string, string> $args A map of argument names to their typee
+     */
+    public function __construct(string $file, string $name, array $args)
+    {
+        parent::__construct(sprintf(
+            "A test with the description '%s' has %d argument(s) ([%s]) and no dataset(s) provided in %s",
+            $name,
+            count($args),
+            implode(', ', array_map(static function (string $arg, string $type): string {
+                return sprintf('%s $%s', $type, $arg);
+            }, array_keys($args), $args)),
+            $file,
+        ));
+    }
+}

src/Expectation.php

@@ -5,13 +5,19 @@ declare(strict_types=1);
 namespace Pest;
 
 use BadMethodCallException;
+use Closure;
+use InvalidArgumentException;
 use Pest\Concerns\Extendable;
 use Pest\Concerns\RetrievesValues;
 use Pest\Support\Arr;
+use Pest\Support\NullClosure;
 use PHPUnit\Framework\Assert;
 use PHPUnit\Framework\Constraint\Constraint;
 use PHPUnit\Framework\ExpectationFailedException;
+use ReflectionFunction;
+use ReflectionNamedType;
 use SebastianBergmann\Exporter\Exporter;
+use Throwable;
 
 /**
  * @internal
@@ -205,6 +211,16 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value is truthy.
+     */
+    public function toBeTruthy(): Expectation
+    {
+        Assert::assertTrue((bool) $this->value);
+
+        return $this;
+    }
+
     /**
      * Asserts that the value is false.
      */
@@ -215,6 +231,16 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value is falsy.
+     */
+    public function toBeFalsy(): Expectation
+    {
+        Assert::assertFalse((bool) $this->value);
+
+        return $this;
+    }
+
     /**
      * Asserts that the value is greater than $expected.
      *
@@ -266,14 +292,16 @@ final class Expectation
     /**
      * Asserts that $needle is an element of the value.
      *
-     * @param mixed $needle
+     * @param mixed $needles
      */
-    public function toContain($needle): Expectation
+    public function toContain(...$needles): Expectation
     {
-        if (is_string($this->value)) {
-            Assert::assertStringContainsString($needle, $this->value);
-        } else {
-            Assert::assertContains($needle, $this->value);
+        foreach ($needles as $needle) {
+            if (is_string($this->value)) {
+                Assert::assertStringContainsString($needle, $this->value);
+            } else {
+                Assert::assertContains($needle, $this->value);
+            }
         }
 
         return $this;
@@ -299,6 +327,36 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that $number matches value's Length.
+     */
+    public function toHaveLength(int $number): Expectation
+    {
+        if (is_string($this->value)) {
+            Assert::assertEquals($number, mb_strlen($this->value));
+
+            return $this;
+        }
+
+        if (is_iterable($this->value)) {
+            return $this->toHaveCount($number);
+        }
+
+        if (is_object($this->value)) {
+            if (method_exists($this->value, 'toArray')) {
+                $array = $this->value->toArray();
+            } else {
+                $array = (array) $this->value;
+            }
+
+            Assert::assertCount($number, $array);
+
+            return $this;
+        }
+
+        throw new BadMethodCallException('Expectation value length is not countable.');
+    }
+
     /**
      * Asserts that $count matches the number of elements of the value.
      */
@@ -328,6 +386,20 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value contains the provided properties $names.
+     *
+     * @param iterable<array-key, string> $names
+     */
+    public function toHaveProperties(iterable $names): Expectation
+    {
+        foreach ($names as $name) {
+            $this->toHaveProperty($name);
+        }
+
+        return $this;
+    }
+
     /**
      * Asserts that two variables have the same value.
      *
@@ -371,6 +443,18 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value is one of the given values.
+     *
+     * @param iterable<int|string, mixed> $values
+     */
+    public function toBeIn(iterable $values): Expectation
+    {
+        Assert::assertContains($this->value, $values);
+
+        return $this;
+    }
+
     /**
      * Asserts that the value is infinite.
      */
@@ -715,6 +799,56 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that executing value throws an exception.
+     *
+     * @param (Closure(Throwable): mixed)|string $exception
+     */
+    public function toThrow($exception, string $exceptionMessage = null): Expectation
+    {
+        $callback = NullClosure::create();
+
+        if ($exception instanceof Closure) {
+            $callback   = $exception;
+            $parameters = (new ReflectionFunction($exception))->getParameters();
+
+            if (1 !== count($parameters)) {
+                throw new InvalidArgumentException('The given closure must have a single parameter type-hinted as the class string.');
+            }
+
+            if (!($type = $parameters[0]->getType()) instanceof ReflectionNamedType) {
+                throw new InvalidArgumentException('The given closure\'s parameter must be type-hinted as the class string.');
+            }
+
+            $exception = $type->getName();
+        }
+
+        try {
+            ($this->value)();
+        } catch (Throwable $e) { // @phpstan-ignore-line
+            if (!class_exists($exception)) {
+                Assert::assertStringContainsString($exception, $e->getMessage());
+
+                return $this;
+            }
+
+            if ($exceptionMessage !== null) {
+                Assert::assertStringContainsString($exceptionMessage, $e->getMessage());
+            }
+
+            Assert::assertInstanceOf($exception, $e);
+            $callback($e);
+
+            return $this;
+        }
+
+        if (!class_exists($exception)) {
+            throw new ExpectationFailedException("Exception with message \"{$exception}\" not thrown.");
+        }
+
+        throw new ExpectationFailedException("Exception \"{$exception}\" not thrown.");
+    }
+
     /**
      * Exports the given value.
      *

src/Factories/TestCaseFactory.php

@@ -228,4 +228,13 @@ final class TestCaseFactory
 
         return $classFQN;
     }
+
+    /**
+     * Determine if the test case will receive argument input from Pest, or not.
+     */
+    public function receivesArguments(): bool
+    {
+        return count($this->datasets) > 0
+            || $this->factoryProxies->count('addDependencies') > 0;
+    }
 }

src/Laravel/Commands/PestTestCommand.php

@@ -21,7 +21,7 @@ final class PestTestCommand extends Command
      *
      * @var string
      */
-    protected $signature = 'pest:test {name : The name of the file} {--unit : Create a unit test} {--dusk : Create a Dusk test} {--test-directory=tests : The name of the tests directory}';
+    protected $signature = 'pest:test {name : The name of the file} {--unit : Create a unit test} {--dusk : Create a Dusk test} {--test-directory=tests : The name of the tests directory} {--force : Overwrite the existing test file with the same name}';
 
     /**
      * The console command description.
@@ -56,7 +56,7 @@ final class PestTestCommand extends Command
             File::makeDirectory(dirname($target), 0777, true, true);
         }
 
-        if (File::exists($target)) {
+        if (File::exists($target) && !(bool) $this->option('force')) {
             throw new InvalidConsoleArgument(sprintf('%s already exist', $target));
         }
 

src/Logging/TeamCity.php

@@ -5,25 +5,34 @@ declare(strict_types=1);
 namespace Pest\Logging;
 
 use function getmypid;
+use Pest\Concerns\Logging\WritesToConsole;
 use Pest\Concerns\Testable;
+use Pest\Support\ExceptionTrace;
+use function Pest\version;
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Test;
+use PHPUnit\Framework\TestCase;
 use PHPUnit\Framework\TestResult;
 use PHPUnit\Framework\TestSuite;
 use PHPUnit\Framework\Warning;
 use PHPUnit\TextUI\DefaultResultPrinter;
 use function round;
 use function str_replace;
+use function strlen;
 use Throwable;
 
 final class TeamCity extends DefaultResultPrinter
 {
+    use WritesToConsole;
     private const PROTOCOL            = 'pest_qn://';
     private const NAME                = 'name';
     private const LOCATION_HINT       = 'locationHint';
     private const DURATION            = 'duration';
     private const TEST_SUITE_STARTED  = 'testSuiteStarted';
     private const TEST_SUITE_FINISHED = 'testSuiteFinished';
+    private const TEST_COUNT          = 'testCount';
+    private const TEST_STARTED        = 'testStarted';
+    private const TEST_FINISHED       = 'testFinished';
 
     /** @var int */
     private $flowId;
@@ -34,148 +43,105 @@ final class TeamCity extends DefaultResultPrinter
     /** @var \PHPUnit\Util\Log\TeamCity */
     private $phpunitTeamCity;
 
-    public function __construct(bool $verbose, string $colors)
+    /**
+     * @param resource|string|null $out
+     */
+    public function __construct($out, bool $verbose, string $colors)
     {
-        parent::__construct(null, $verbose, $colors, false, 80, false);
-        $this->phpunitTeamCity = new \PHPUnit\Util\Log\TeamCity(
-            null,
-            $verbose,
-            $colors,
-            false,
-            80,
-            false
-        );
+        parent::__construct($out, $verbose, $colors);
+        $this->phpunitTeamCity = new \PHPUnit\Util\Log\TeamCity($out, $verbose, $colors);
+
+        $this->logo();
+    }
+
+    private function logo(): void
+    {
+        $this->writeNewLine();
+        $this->write('Pest ' . version());
+        $this->writeNewLine();
     }
 
     public function printResult(TestResult $result): void
     {
-        $this->printHeader($result);
-        $this->printFooter($result);
+        $this->write('Tests:  ');
+
+        $results = [
+            'failed'     => ['count' => $result->errorCount() + $result->failureCount(), 'color' => 'fg-red'],
+            'skipped'    => ['count' => $result->skippedCount(), 'color' => 'fg-yellow'],
+            'warned'     => ['count' => $result->warningCount(), 'color' => 'fg-yellow'],
+            'risked'     => ['count' => $result->riskyCount(), 'color' => 'fg-yellow'],
+            'incomplete' => ['count' => $result->notImplementedCount(), 'color' => 'fg-yellow'],
+            'passed'     => ['count' => $this->successfulTestCount($result), 'color' => 'fg-green'],
+        ];
+
+        $filteredResults = array_filter($results, function ($item): bool {
+            return $item['count'] > 0;
+        });
+
+        foreach ($filteredResults as $key => $info) {
+            $this->writeWithColor($info['color'], $info['count'] . " $key", false);
+
+            if ($key !== array_reverse(array_keys($filteredResults))[0]) {
+                $this->write(', ');
+            }
+        }
+
+        $this->writeNewLine();
+        $this->write("Assertions:  $this->numAssertions");
+
+        $this->writeNewLine();
+        $this->write("Time:  {$result->time()}s");
+
+        $this->writeNewLine();
+    }
+
+    private function successfulTestCount(TestResult $result): int
+    {
+        return $result->count()
+            - $result->failureCount()
+            - $result->errorCount()
+            - $result->skippedCount()
+            - $result->warningCount()
+            - $result->notImplementedCount()
+            - $result->riskyCount();
     }
 
     /** @phpstan-ignore-next-line */
     public function startTestSuite(TestSuite $suite): void
     {
+        $suiteName = $suite->getName();
+
+        if (static::isCompoundTestSuite($suite)) {
+            $this->writeWithColor('bold', '  ' . $suiteName);
+        } elseif (static::isPestTestSuite($suite)) {
+            $this->writeWithColor('fg-white, bold', '  ' . substr_replace($suiteName, '', 0, 2) . ' ');
+        } else {
+            $this->writeWithColor('fg-white, bold', '  ' . $suiteName);
+        }
+
+        $this->writeNewLine();
+
         $this->flowId = (int) getmypid();
 
         if (!$this->isSummaryTestCountPrinted) {
-            $this->printEvent(
-                'testCount',
-                ['count' => $suite->count()]
-            );
+            $this->printEvent(self::TEST_COUNT, [
+                'count' => $suite->count(),
+            ]);
             $this->isSummaryTestCountPrinted = true;
         }
 
-        $suiteName = $suite->getName();
-
-        if (file_exists($suiteName) || !method_exists($suiteName, '__getFileName')) {
-            $this->printEvent(
-                self::TEST_SUITE_STARTED, [
-                self::NAME          => $suiteName,
-                self::LOCATION_HINT => self::PROTOCOL . $suiteName,
-            ]);
-
-            return;
-        }
-
-        $fileName = $suiteName::__getFileName();
-
-        $this->printEvent(
-            self::TEST_SUITE_STARTED, [
-            self::NAME          => substr($suiteName, 2),
-            self::LOCATION_HINT => self::PROTOCOL . $fileName,
+        $this->printEvent(self::TEST_SUITE_STARTED, [
+            self::NAME          => static::isCompoundTestSuite($suite) ? $suiteName : substr($suiteName, 2),
+            self::LOCATION_HINT => self::PROTOCOL . (static::isCompoundTestSuite($suite) ? $suiteName : $suiteName::__getFileName()),
         ]);
     }
 
-    /** @phpstan-ignore-next-line */
-    public function endTestSuite(TestSuite $suite): void
-    {
-        $suiteName = $suite->getName();
-
-        if (file_exists($suiteName) || !method_exists($suiteName, '__getFileName')) {
-            $this->printEvent(
-                self::TEST_SUITE_FINISHED, [
-                self::NAME          => $suiteName,
-                self::LOCATION_HINT => self::PROTOCOL . $suiteName,
-            ]);
-
-            return;
-        }
-
-        $this->printEvent(
-            self::TEST_SUITE_FINISHED, [
-            self::NAME         => substr($suiteName, 2),
-        ]);
-    }
-
-    /**
-     * @param Test|Testable $test
-     */
-    public function startTest(Test $test): void
-    {
-        if (!TeamCity::isPestTest($test)) {
-            $this->phpunitTeamCity->startTest($test);
-
-            return;
-        }
-
-        $this->printEvent('testStarted', [
-            self::NAME          => $test->getName(),
-            // @phpstan-ignore-next-line
-            self::LOCATION_HINT => self::PROTOCOL . $test->toString(),
-        ]);
-    }
-
-    /**
-     * @param Test|Testable $test
-     */
-    public function endTest(Test $test, float $time): void
-    {
-        if (!TeamCity::isPestTest($test)) {
-            $this->phpunitTeamCity->endTest($test, $time);
-
-            return;
-        }
-
-        $this->printEvent('testFinished', [
-            self::NAME     => $test->getName(),
-            self::DURATION => self::toMilliseconds($time),
-        ]);
-    }
-
-    /**
-     * @param Test|Testable $test
-     */
-    public function addError(Test $test, Throwable $t, float $time): void
-    {
-        $this->phpunitTeamCity->addError($test, $t, $time);
-    }
-
-    /**
-     * @phpstan-ignore-next-line
-     *
-     * @param Test|Testable $test
-     */
-    public function addWarning(Test $test, Warning $e, float $time): void
-    {
-        $this->phpunitTeamCity->addWarning($test, $e, $time);
-    }
-
-    public function addFailure(Test $test, AssertionFailedError $e, float $time): void
-    {
-        $this->phpunitTeamCity->addFailure($test, $e, $time);
-    }
-
-    protected function writeProgress(string $progress): void
-    {
-    }
-
     /**
      * @param array<string, string|int> $params
      */
     private function printEvent(string $eventName, array $params = []): void
     {
-        $this->write("\n##teamcity[{$eventName}");
+        $this->write("##teamcity[{$eventName}");
 
         if ($this->flowId !== 0) {
             $params['flowId'] = $this->flowId;
@@ -198,9 +164,56 @@ final class TeamCity extends DefaultResultPrinter
         );
     }
 
-    private static function toMilliseconds(float $time): int
+    /** @phpstan-ignore-next-line */
+    public function endTestSuite(TestSuite $suite): void
     {
-        return (int) round($time * 1000);
+        $suiteName = $suite->getName();
+
+        $this->writeNewLine();
+        $this->writeNewLine();
+
+        $this->printEvent(self::TEST_SUITE_FINISHED, [
+            self::NAME          => static::isCompoundTestSuite($suite) ? $suiteName : substr($suiteName, 2),
+            self::LOCATION_HINT => self::PROTOCOL . (static::isCompoundTestSuite($suite) ? $suiteName : $suiteName::__getFileName()),
+        ]);
+    }
+
+    /**
+     * @param Test|Testable $test
+     */
+    public function startTest(Test $test): void
+    {
+        if (!TeamCity::isPestTest($test)) {
+            $this->phpunitTeamCity->startTest($test);
+
+            return;
+        }
+
+        $this->printEvent(self::TEST_STARTED, [
+            self::NAME => $test->getName(),
+            // @phpstan-ignore-next-line
+            self::LOCATION_HINT => self::PROTOCOL . $test->toString(),
+        ]);
+    }
+
+    /**
+     * Verify that the given test suite is a valid Pest suite.
+     *
+     * @param TestSuite<Test> $suite
+     */
+    private static function isPestTestSuite(TestSuite $suite): bool
+    {
+        return strncmp($suite->getName(), 'P\\', strlen('P\\')) === 0;
+    }
+
+    /**
+     * Determine if the test suite is made up of multiple smaller test suites.
+     *
+     * @param TestSuite<Test> $suite
+     */
+    private static function isCompoundTestSuite(TestSuite $suite): bool
+    {
+        return file_exists($suite->getName()) || !method_exists($suite->getName(), '__getFileName');
     }
 
     public static function isPestTest(Test $test): bool
@@ -210,4 +223,75 @@ final class TeamCity extends DefaultResultPrinter
 
         return in_array(Testable::class, $uses, true);
     }
+
+    /**
+     * @param Test|Testable $test
+     */
+    public function endTest(Test $test, float $time): void
+    {
+        $this->printEvent(self::TEST_FINISHED, [
+            self::NAME     => $test->getName(),
+            self::DURATION => self::toMilliseconds($time),
+        ]);
+
+        if (!$this->lastTestFailed) {
+            $this->writeSuccess($test->getName());
+        }
+
+        $this->numAssertions += $test instanceof TestCase ? $test->getNumAssertions() : 1;
+        $this->lastTestFailed = false;
+    }
+
+    private static function toMilliseconds(float $time): int
+    {
+        return (int) round($time * 1000);
+    }
+
+    public function addError(Test $test, Throwable $t, float $time): void
+    {
+        $this->markAsFailure($t);
+        $this->writeError($test->getName());
+        $this->phpunitTeamCity->addError($test, $t, $time);
+    }
+
+    public function addFailure(Test $test, AssertionFailedError $e, float $time): void
+    {
+        $this->markAsFailure($e);
+        $this->writeError($test->getName());
+        $this->phpunitTeamCity->addFailure($test, $e, $time);
+    }
+
+    public function addWarning(Test $test, Warning $e, float $time): void
+    {
+        $this->markAsFailure($e);
+        $this->writeWarning($test->getName());
+        $this->phpunitTeamCity->addWarning($test, $e, $time);
+    }
+
+    public function addIncompleteTest(Test $test, Throwable $t, float $time): void
+    {
+        $this->markAsFailure($t);
+        $this->writeWarning($test->getName());
+        $this->phpunitTeamCity->addIncompleteTest($test, $t, $time);
+    }
+
+    public function addRiskyTest(Test $test, Throwable $t, float $time): void
+    {
+        $this->markAsFailure($t);
+        $this->writeWarning($test->getName());
+        $this->phpunitTeamCity->addRiskyTest($test, $t, $time);
+    }
+
+    public function addSkippedTest(Test $test, Throwable $t, float $time): void
+    {
+        $this->markAsFailure($t);
+        $this->writeWarning($test->getName());
+        $this->phpunitTeamCity->printIgnoredTest($test->getName(), $t, $time);
+    }
+
+    private function markAsFailure(Throwable $t): void
+    {
+        $this->lastTestFailed = true;
+        ExceptionTrace::removePestReferences($t);
+    }
 }

src/PendingObjects/TestCall.php

@@ -59,11 +59,15 @@ final class TestCall
     /**
      * Asserts that the test throws the given `$exceptionClass` when called.
      */
-    public function throws(string $exceptionClass, string $exceptionMessage = null): TestCall
+    public function throws(string $exception, string $exceptionMessage = null): TestCall
     {
-        $this->testCaseFactory
-            ->proxies
-            ->add(Backtrace::file(), Backtrace::line(), 'expectException', [$exceptionClass]);
+        if (class_exists($exception)) {
+            $this->testCaseFactory
+                ->proxies
+                ->add(Backtrace::file(), Backtrace::line(), 'expectException', [$exception]);
+        } else {
+            $exceptionMessage = $exception;
+        }
 
         if (is_string($exceptionMessage)) {
             $this->testCaseFactory
@@ -144,6 +148,9 @@ final class TestCall
             ? $conditionOrMessage
             : $message;
 
+        /** @var callable(): bool $condition */
+        $condition = $condition->bindTo(null);
+
         $this->testCaseFactory
             ->chains
             ->addWhen($condition, Backtrace::file(), Backtrace::line(), 'markTestSkipped', [$message]);
@@ -151,12 +158,30 @@ final class TestCall
         return $this;
     }
 
+    /**
+     * Saves the property accessors to be used on the target.
+     */
+    public function __get(string $name): self
+    {
+        return $this->addChain($name);
+    }
+
     /**
      * Saves the calls to be used on the target.
      *
      * @param array<int, mixed> $arguments
      */
     public function __call(string $name, array $arguments): self
+    {
+        return $this->addChain($name, $arguments);
+    }
+
+    /**
+     * Add a chain to the test case factory. Omitting the arguments will treat it as a property accessor.
+     *
+     * @param array<int, mixed>|null $arguments
+     */
+    private function addChain(string $name, array $arguments = null): self
     {
         $this->testCaseFactory
             ->chains
@@ -167,7 +192,9 @@ final class TestCall
             if ($this->testCaseFactory->description !== null) {
                 $this->testCaseFactory->description .= ' → ';
             }
-            $this->testCaseFactory->description .= sprintf('%s %s', $name, $exporter->shortenedRecursiveExport($arguments));
+            $this->testCaseFactory->description .= $arguments === null
+                ? $name
+                : sprintf('%s %s', $name, $exporter->shortenedRecursiveExport($arguments));
         }
 
         return $this;

src/Pest.php

@@ -6,7 +6,7 @@ namespace Pest;
 
 function version(): string
 {
-    return '1.8.0';
+    return '1.18.0';
 }
 
 function testDirectory(string $file = ''): string

src/Repositories/TestRepository.php

@@ -5,11 +5,13 @@ declare(strict_types=1);
 namespace Pest\Repositories;
 
 use Closure;
+use Pest\Exceptions\DatasetMissing;
 use Pest\Exceptions\ShouldNotHappen;
 use Pest\Exceptions\TestAlreadyExist;
 use Pest\Exceptions\TestCaseAlreadyInUse;
 use Pest\Exceptions\TestCaseClassOrTraitNotFound;
 use Pest\Factories\TestCaseFactory;
+use Pest\Support\Reflection;
 use Pest\Support\Str;
 use Pest\TestSuite;
 use PHPUnit\Framework\TestCase;
@@ -20,7 +22,7 @@ use PHPUnit\Framework\TestCase;
 final class TestRepository
 {
     /**
-     * @var string
+     * @var non-empty-string
      */
     private const SEPARATOR = '>>>';
 
@@ -42,6 +44,20 @@ final class TestRepository
         return count($this->state);
     }
 
+    /**
+     * Returns the filename of each test that should be executed in the suite.
+     *
+     * @return array<int, string>
+     */
+    public function getFilenames(): array
+    {
+        $testsWithOnly = $this->testsUsingOnly();
+
+        return array_values(array_map(function (TestCaseFactory $factory): string {
+            return $factory->filename;
+        }, count($testsWithOnly) > 0 ? $testsWithOnly : $this->state));
+    }
+
     /**
      * Calls the given callable foreach test case.
      */
@@ -83,9 +99,7 @@ final class TestRepository
             }
         }
 
-        $onlyState = array_filter($this->state, function ($testFactory): bool {
-            return $testFactory->only;
-        });
+        $onlyState = $this->testsUsingOnly();
 
         $state = count($onlyState) > 0 ? $onlyState : $this->state;
 
@@ -98,6 +112,18 @@ final class TestRepository
         }
     }
 
+    /**
+     * Return all tests that have called the only method.
+     *
+     * @return array<TestCaseFactory>
+     */
+    private function testsUsingOnly(): array
+    {
+        return array_filter($this->state, function ($testFactory): bool {
+            return $testFactory->only;
+        });
+    }
+
     /**
      * Uses the given `$testCaseClass` on the given `$paths`.
      *
@@ -140,6 +166,14 @@ final class TestRepository
             throw new TestAlreadyExist($test->filename, $test->description);
         }
 
+        if (!$test->receivesArguments()) {
+            $arguments = Reflection::getFunctionArguments($test->test);
+
+            if (count($arguments) > 0) {
+                throw new DatasetMissing($test->filename, $test->description, $arguments);
+            }
+        }
+
         $this->state[sprintf('%s%s%s', $test->filename, self::SEPARATOR, $test->description)] = $test;
     }
 }

src/Support/ExceptionTrace.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Pest\Support;
 
 use Closure;
+use ReflectionProperty;
 use Throwable;
 
 /**
@@ -36,4 +37,30 @@ final class ExceptionTrace
             throw $throwable;
         }
     }
+
+    /**
+     * Removes any item from the stack trace referencing Pest so as not to
+     * crowd the error log for the end user.
+     */
+    public static function removePestReferences(Throwable $t): void
+    {
+        if (!property_exists($t, 'serializableTrace')) {
+            return;
+        }
+
+        $property = new ReflectionProperty($t, 'serializableTrace');
+        $property->setAccessible(true);
+        $trace = $property->getValue($t);
+
+        $cleanedTrace = [];
+        foreach ($trace as $item) {
+            if (key_exists('file', $item) && mb_strpos($item['file'], 'vendor/pestphp/pest/') > 0) {
+                continue;
+            }
+
+            $cleanedTrace[] = $item;
+        }
+
+        $property->setValue($t, $cleanedTrace);
+    }
 }

src/Support/HigherOrderCallables.php

@@ -4,7 +4,10 @@ declare(strict_types=1);
 
 namespace Pest\Support;
 
+use Closure;
 use Pest\Expectation;
+use Pest\PendingObjects\TestCall;
+use PHPUnit\Framework\TestCase;
 
 /**
  * @internal
@@ -32,7 +35,7 @@ final class HigherOrderCallables
      */
     public function expect($value)
     {
-        return new Expectation(is_callable($value) ? Reflection::bindCallable($value) : $value);
+        return new Expectation($value instanceof Closure ? Reflection::bindCallableWithData($value) : $value);
     }
 
     /**
@@ -50,15 +53,13 @@ final class HigherOrderCallables
     }
 
     /**
-     * @template TValue
+     * Tap into the test case to perform an action and return the test case.
      *
-     * @param callable(): TValue $callable
-     *
-     * @return TValue|object
+     * @return TestCall|TestCase|object
      */
     public function tap(callable $callable)
     {
-        Reflection::bindCallable($callable);
+        Reflection::bindCallableWithData($callable);
 
         return $this->target;
     }

src/Support/HigherOrderMessage.php

@@ -34,18 +34,18 @@ final class HigherOrderMessage
     public $line;
 
     /**
-     * The method name.
+     * The method or property name to access.
      *
      * @readonly
      *
      * @var string
      */
-    public $methodName;
+    public $name;
 
     /**
      * The arguments.
      *
-     * @var array<int, mixed>
+     * @var array<int, mixed>|null
      *
      * @readonly
      */
@@ -61,13 +61,13 @@ final class HigherOrderMessage
     /**
      * Creates a new higher order message.
      *
-     * @param array<int, mixed> $arguments
+     * @param array<int, mixed>|null $arguments
      */
-    public function __construct(string $filename, int $line, string $methodName, array $arguments)
+    public function __construct(string $filename, int $line, string $methodName, $arguments)
     {
         $this->filename   = $filename;
         $this->line       = $line;
-        $this->methodName = $methodName;
+        $this->name       = $methodName;
         $this->arguments  = $arguments;
     }
 
@@ -85,21 +85,23 @@ final class HigherOrderMessage
 
         if ($this->hasHigherOrderCallable()) {
             /* @phpstan-ignore-next-line */
-            return (new HigherOrderCallables($target))->{$this->methodName}(...$this->arguments);
+            return (new HigherOrderCallables($target))->{$this->name}(...$this->arguments);
         }
 
         try {
-            return Reflection::call($target, $this->methodName, $this->arguments);
+            return is_array($this->arguments)
+                ? Reflection::call($target, $this->name, $this->arguments)
+                : $target->{$this->name}; /* @phpstan-ignore-line */
         } catch (Throwable $throwable) {
             Reflection::setPropertyValue($throwable, 'file', $this->filename);
             Reflection::setPropertyValue($throwable, 'line', $this->line);
 
-            if ($throwable->getMessage() === self::getUndefinedMethodMessage($target, $this->methodName)) {
+            if ($throwable->getMessage() === self::getUndefinedMethodMessage($target, $this->name)) {
                 /** @var ReflectionClass $reflection */
                 $reflection = new ReflectionClass($target);
                 /* @phpstan-ignore-next-line */
                 $reflection = $reflection->getParentClass() ?: $reflection;
-                Reflection::setPropertyValue($throwable, 'message', sprintf('Call to undefined method %s::%s()', $reflection->getName(), $this->methodName));
+                Reflection::setPropertyValue($throwable, 'message', sprintf('Call to undefined method %s::%s()', $reflection->getName(), $this->name));
             }
 
             throw $throwable;
@@ -125,7 +127,7 @@ final class HigherOrderMessage
      */
     private function hasHigherOrderCallable()
     {
-        return in_array($this->methodName, get_class_methods(HigherOrderCallables::class), true);
+        return in_array($this->name, get_class_methods(HigherOrderCallables::class), true);
     }
 
     private static function getUndefinedMethodMessage(object $target, string $methodName): string

src/Support/HigherOrderMessageCollection.php

@@ -17,21 +17,21 @@ final class HigherOrderMessageCollection
     /**
      * Adds a new higher order message to the collection.
      *
-     * @param array<int, mixed> $arguments
+     * @param array<int, mixed>|null $arguments
      */
-    public function add(string $filename, int $line, string $methodName, array $arguments): void
+    public function add(string $filename, int $line, string $name, array $arguments = null): void
     {
-        $this->messages[] = new HigherOrderMessage($filename, $line, $methodName, $arguments);
+        $this->messages[] = new HigherOrderMessage($filename, $line, $name, $arguments);
     }
 
     /**
      * Adds a new higher order message to the collection if the callable condition is does not return false.
      *
-     * @param array<int, mixed> $arguments
+     * @param array<int, mixed>|null $arguments
      */
-    public function addWhen(callable $condition, string $filename, int $line, string $methodName, array $arguments): void
+    public function addWhen(callable $condition, string $filename, int $line, string $name, array $arguments = null): void
     {
-        $this->messages[] = (new HigherOrderMessage($filename, $line, $methodName, $arguments))->when($condition);
+        $this->messages[] = (new HigherOrderMessage($filename, $line, $name, $arguments))->when($condition);
     }
 
     /**
@@ -53,4 +53,20 @@ final class HigherOrderMessageCollection
             $message->call($target);
         }
     }
+
+    /**
+     * Count the number of messages with the given name.
+     *
+     * @param string $name A higher order message name (usually a method name)
+     */
+    public function count(string $name): int
+    {
+        return array_reduce(
+            $this->messages,
+            static function (int $total, HigherOrderMessage $message) use ($name): int {
+                return $total + (int) ($name === $message->name);
+            },
+            0,
+        );
+    }
 }

src/Support/HigherOrderTapProxy.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Pest\Support;
 
+use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 use Throwable;
 
@@ -17,16 +18,14 @@ final class HigherOrderTapProxy
     /**
      * The target being tapped.
      *
-     * @var mixed
+     * @var TestCase
      */
     public $target;
 
     /**
      * Create a new tap proxy instance.
-     *
-     * @param mixed $target
      */
-    public function __construct($target)
+    public function __construct(TestCase $target)
     {
         $this->target = $target;
     }

src/Support/Reflection.php

@@ -12,6 +12,7 @@ use ReflectionException;
 use ReflectionFunction;
 use ReflectionNamedType;
 use ReflectionParameter;
+use ReflectionUnionType;
 
 /**
  * @internal
@@ -60,6 +61,21 @@ final class Reflection
         return Closure::fromCallable($callable)->bindTo(TestSuite::getInstance()->test)(...$args);
     }
 
+    /**
+     * Bind a callable to the TestCase and return the result,
+     * passing in the current dataset values as arguments.
+     *
+     * @return mixed
+     */
+    public static function bindCallableWithData(callable $callable)
+    {
+        $test = TestSuite::getInstance()->test;
+
+        return $test === null
+            ? static::bindCallable($callable)
+            : Closure::fromCallable($callable)->bindTo($test)(...$test->getProvidedData());
+    }
+
     /**
      * Infers the file name from the given closure.
      */
@@ -94,10 +110,6 @@ final class Reflection
             }
         }
 
-        if ($reflectionProperty === null) {
-            throw ShouldNotHappen::fromMessage('Reflection property not found.');
-        }
-
         $reflectionProperty->setAccessible(true);
 
         return $reflectionProperty->getValue($object);
@@ -128,10 +140,6 @@ final class Reflection
             }
         }
 
-        if ($reflectionProperty === null) {
-            throw ShouldNotHappen::fromMessage('Reflection property not found.');
-        }
-
         $reflectionProperty->setAccessible(true);
         $reflectionProperty->setValue($object, $value);
     }
@@ -163,4 +171,37 @@ final class Reflection
 
         return $name;
     }
+
+    /**
+     * Receive a map of function argument names to their types.
+     *
+     * @return array<string, string>
+     */
+    public static function getFunctionArguments(Closure $function): array
+    {
+        $parameters = (new ReflectionFunction($function))->getParameters();
+        $arguments  = [];
+
+        foreach ($parameters as $parameter) {
+            /** @var ReflectionNamedType|ReflectionUnionType|null $types */
+            $types = ($parameter->hasType()) ? $parameter->getType() : null;
+
+            if (is_null($types)) {
+                $arguments[$parameter->getName()] = 'mixed';
+
+                continue;
+            }
+
+            $arguments[$parameter->getName()] = implode('|', array_map(
+                static function (ReflectionNamedType $type): string {
+                    return $type->getName();
+                },
+                ($types instanceof ReflectionNamedType)
+                    ? [$types] // NOTE: normalize as list of to handle unions
+                    : $types->getTypes(),
+            ));
+        }
+
+        return $arguments;
+    }
 }

stubs/Unit.php

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

tests/.snapshots/success.txt

@@ -96,11 +96,17 @@
   ✓ more than two datasets with (2) / (4) / (5)
   ✓ more than two datasets with (2) / (4) / (6)
   ✓ more than two datasets did the job right
+  ✓ it can resolve a dataset after the test case is available with (Closure Object (...))
+  ✓ it can resolve a dataset after the test case is available with shared yield sets with (Closure Object (...)) #1
+  ✓ it can resolve a dataset after the test case is available with shared yield sets with (Closure Object (...)) #2
+  ✓ it can resolve a dataset after the test case is available with shared array sets with (Closure Object (...)) #1
+  ✓ it can resolve a dataset after the test case is available with shared array sets with (Closure Object (...)) #2
 
    PASS  Tests\Features\Exceptions
   ✓ it gives access the the underlying expectException
   ✓ it catch exceptions
   ✓ it catch exceptions and messages
+  ✓ it can just define the message
 
    PASS  Tests\Features\Expect\HigherOrder\methods
   ✓ it can access methods
@@ -112,11 +118,14 @@
   ✓ it works with sequence
   ✓ it can compose complex expectations
   ✓ it can handle nested method calls
+  ✓ it works with higher order tests
 
    PASS  Tests\Features\Expect\HigherOrder\methodsAndProperties
   ✓ it can access methods and properties
   ✓ it can handle nested methods and properties
+  ✓ it works with higher order tests
   ✓ it can start a new higher order expectation using the and syntax
+  ✓ it can start a new higher order expectation using the and syntax in higher order tests
 
    PASS  Tests\Features\Expect\HigherOrder\properties
   ✓ it allows properties to be accessed from the value
@@ -128,6 +137,7 @@
   ✓ it can compose complex expectations
   ✓ it works with objects
   ✓ it works with nested properties
+  ✓ it works with higher order tests
 
    PASS  Tests\Features\Expect\each
   ✓ an exception is thrown if the the type is not iterable
@@ -196,6 +206,20 @@
    PASS  Tests\Features\Expect\toBeFalse
   ✓ strict comparisons
   ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeFalsy
+  ✓ passes as falsy with (false)
+  ✓ passes as falsy with ('')
+  ✓ passes as falsy with (null)
+  ✓ passes as falsy with (0)
+  ✓ passes as falsy with ('0')
+  ✓ passes as not falsy with (true)
+  ✓ passes as not falsy with (1) #1
+  ✓ passes as not falsy with ('false')
+  ✓ passes as not falsy with (1) #2
+  ✓ passes as not falsy with (-1)
+  ✓ failures
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeFile
@@ -216,6 +240,11 @@
    PASS  Tests\Features\Expect\toBeGreatherThanOrEqual
   ✓ passes
   ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeIn
+  ✓ passes
+  ✓ failures
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeInfinite
@@ -301,6 +330,20 @@
    PASS  Tests\Features\Expect\toBeTrue
   ✓ strict comparisons
   ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeTruthy
+  ✓ passes as truthy with (true)
+  ✓ passes as truthy with (1) #1
+  ✓ passes as truthy with ('false')
+  ✓ passes as truthy with (1) #2
+  ✓ passes as truthy with (-1)
+  ✓ passes as not truthy with (false)
+  ✓ passes as not truthy with ('')
+  ✓ passes as not truthy with (null)
+  ✓ passes as not truthy with (0)
+  ✓ passes as not truthy with ('0')
+  ✓ failures
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeWritableDirectory
@@ -315,9 +358,16 @@
 
    PASS  Tests\Features\Expect\toContain
   ✓ passes strings
+  ✓ passes strings with multiple needles
   ✓ passes arrays
+  ✓ passes arrays with multiple needles
+  ✓ passes with array needles
   ✓ failures
+  ✓ failures with multiple needles (all failing)
+  ✓ failures with multiple needles (some failing)
   ✓ not failures
+  ✓ not failures with multiple needles (all failing)
+  ✓ not failures with multiple needles (some failing)
 
    PASS  Tests\Features\Expect\toEndWith
   ✓ pass
@@ -367,6 +417,25 @@
    PASS  Tests\Features\Expect\toHaveKeys
   ✓ pass
   ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveLength
+  ✓ it passes with ('Fortaleza')
+  ✓ it passes with ('Sollefteå')
+  ✓ it passes with ('Ιεράπετρα')
+  ✓ it passes with (stdClass Object (...))
+  ✓ it passes with (Illuminate\Support\Collection Object (...))
+  ✓ it passes with array
+  ✓ it passes with *not*
+  ✓ it properly fails with *not*
+  ✓ it fails with (1)
+  ✓ it fails with (1.5)
+  ✓ it fails with (true)
+  ✓ it fails with (null)
+
+   PASS  Tests\Features\Expect\toHaveProperties
+  ✓ pass
+  ✓ failures
   ✓ not failures
 
    PASS  Tests\Features\Expect\toHaveProperty
@@ -399,6 +468,19 @@
   ✓ failures
   ✓ not failures
 
+   PASS  Tests\Features\Expect\toThrow
+  ✓ passes
+  ✓ failures 1
+  ✓ failures 2
+  ✓ failures 3
+  ✓ failures 4
+  ✓ failures 5
+  ✓ failures 6
+  ✓ failures 7
+  ✓ not failures
+  ✓ closure missing parameter
+  ✓ closure missing type-hint
+
    PASS  Tests\Features\Helpers
   ✓ it can set/get properties on $this
   ✓ it throws error if property do not exist
@@ -411,7 +493,12 @@
   ✓ it proxies calls to object
   ✓ it is capable doing multiple assertions
   ✓ it resolves expect callables correctly
+  ✓ does not treat method names as callables
   ✓ it can tap into the test
+  ✓ it can pass datasets into the expect callables with (1, 2, 3)
+  ✓ it can pass datasets into the tap callable with (1, 2, 3)
+  ✓ it can pass shared datasets into callables with (1)
+  ✓ it can pass shared datasets into callables with (2)
 
    WARN  Tests\Features\Incompleted
   … incompleted
@@ -444,6 +531,8 @@
   ✓ it do not skips with falsy closure condition
   - it skips with condition and message → skipped because foo
   - it skips when skip after assertion
+  - it can use something in the test case as a condition → This test was skipped
+  - it can user higher order callables and skip
 
    PASS  Tests\Features\Test
   ✓ a test
@@ -457,12 +546,14 @@
 
    PASS  Tests\Hooks\AfterAllTest
   ✓ global afterAll execution order
+  ✓ it only gets called once per file
 
    PASS  Tests\Hooks\AfterEachTest
   ✓ global afterEach execution order
 
    PASS  Tests\Hooks\BeforeAllTest
   ✓ global beforeAll execution order
+  ✓ it only gets called once per file
 
    PASS  Tests\Hooks\BeforeEachTest
   ✓ global beforeEach execution order
@@ -554,10 +645,16 @@
 
    PASS  Tests\Unit\TestSuite
   ✓ it does not allow to add the same test description twice
+  ✓ it alerts users about tests with arguments but no input
+  ✓ it can return an array of all test suite filenames
+  ✓ it can filter the test suite filenames to those with the only method
 
    PASS  Tests\Visual\Help
   ✓ visual snapshot of help command output
 
+   PASS  Tests\Visual\JUnit
+  ✓ it is can successfully call all public methods
+
    PASS  Tests\Visual\SingleTestOrDirectory
   ✓ allows to run a single test
   ✓ allows to run a directory
@@ -567,6 +664,9 @@
    WARN  Tests\Visual\Success
   - visual snapshot of test suite on success
 
+   PASS  Tests\Visual\TeamCity
+  ✓ it is can successfully call all public methods
+
    PASS  Tests\Features\Depends
   ✓ first
   ✓ second
@@ -581,5 +681,5 @@
   ✓ it is a test
   ✓ it uses correct parent class
 
-  Tests:  4 incompleted, 7 skipped, 365 passed
+  Tests:  4 incompleted, 9 skipped, 447 passed
   

tests/Datasets/Bound.php

@@ -0,0 +1,11 @@
+<?php
+
+dataset('bound.closure', function () {
+    yield function () { return 1; };
+    yield function () { return 2; };
+});
+
+dataset('bound.array', [
+    function () { return 1; },
+    function () { return 2; },
+]);

tests/Features/Datasets.php

@@ -5,6 +5,10 @@ use Pest\Exceptions\DatasetAlreadyExist;
 use Pest\Exceptions\DatasetDoesNotExist;
 use Pest\Plugin;
 
+beforeEach(function () {
+    $this->foo = 'bar';
+});
+
 it('throws exception if dataset does not exist', function () {
     $this->expectException(DatasetDoesNotExist::class);
     $this->expectExceptionMessage("A dataset with the name `first` does not exist. You can create it using `dataset('first', ['a', 'b']);`.");
@@ -223,3 +227,17 @@ test('more than two datasets', function ($text_a, $text_b, $text_c) use ($state,
 test('more than two datasets did the job right', function () use ($state) {
     expect($state->text)->toBe('121212121212131423241314232411122122111221221112212213142324135136145146235236245246');
 });
+
+it('can resolve a dataset after the test case is available', function ($result) {
+    expect($result)->toBe('bar');
+})->with([
+    function () { return $this->foo; },
+]);
+
+it('can resolve a dataset after the test case is available with shared yield sets', function ($result) {
+    expect($result)->toBeInt()->toBeLessThan(3);
+})->with('bound.closure');
+
+it('can resolve a dataset after the test case is available with shared array sets', function ($result) {
+    expect($result)->toBeInt()->toBeLessThan(3);
+})->with('bound.array');

tests/Features/Exceptions.php

@@ -13,3 +13,7 @@ it('catch exceptions', function () {
 it('catch exceptions and messages', function () {
     throw new Exception('Something bad happened');
 })->throws(Exception::class, 'Something bad happened');
+
+it('can just define the message', function () {
+    throw new Exception('Something bad happened');
+})->throws('Something bad happened');

tests/Features/Expect/HigherOrder/methods.php

@@ -67,6 +67,13 @@ it('can handle nested method calls', function () {
         ->books()->each->toBeArray();
 });
 
+it('works with higher order tests')
+    ->expect(new HasMethods())
+    ->newInstance()->newInstance()->name()->toEqual('Has Methods')->toBeString()
+    ->newInstance()->name()->toEqual('Has Methods')->not->toBeArray
+    ->name()->toEqual('Has Methods')
+    ->books()->each->toBeArray;
+
 class HasMethods
 {
     public function name()

tests/Features/Expect/HigherOrder/methodsAndProperties.php

@@ -22,6 +22,13 @@ it('can handle nested methods and properties', function () {
         ->newInstance()->books()->toBeArray();
 });
 
+it('works with higher order tests')
+    ->expect(new HasMethodsAndProperties())
+    ->meta->foo->bar->toBeString()->toEqual('baz')->not->toBeInt
+    ->newInstance()->meta->foo->toBeArray
+    ->newInstance()->multiply(2, 2)->toEqual(4)->not->toEqual(5)
+    ->newInstance()->books()->toBeArray();
+
 it('can start a new higher order expectation using the and syntax', function () {
     expect(new HasMethodsAndProperties())
         ->toBeInstanceOf(HasMethodsAndProperties::class)
@@ -33,6 +40,14 @@ it('can start a new higher order expectation using the and syntax', function ()
     expect(static::getCount())->toEqual(4);
 });
 
+it('can start a new higher order expectation using the and syntax in higher order tests')
+    ->expect(new HasMethodsAndProperties())
+    ->toBeInstanceOf(HasMethodsAndProperties::class)
+    ->meta->toBeArray
+    ->and(['foo' => 'bar'])
+    ->toBeArray()
+    ->foo->toEqual('bar');
+
 class HasMethodsAndProperties
 {
     public $name = 'Has Methods and Properties';

tests/Features/Expect/HigherOrder/properties.php

@@ -64,6 +64,11 @@ it('works with nested properties', function () {
         ->posts->toBeArray()->toHaveCount(2);
 });
 
+it('works with higher order tests')
+    ->expect(new HasProperties())
+    ->nested->foo->bar->toBeString()->toEqual('baz')
+    ->posts->toBeArray()->toHaveCount(2);
+
 class HasProperties
 {
     public $name = 'foo';

tests/Features/Expect/toBeFalsy.php

@@ -0,0 +1,19 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes as falsy', function ($value) {
+    expect($value)->toBeFalsy();
+})->with([false, '', null, 0, '0']);
+
+test('passes as not falsy', function ($value) {
+    expect($value)->not->toBeFalsy();
+})->with([true, [1], 'false', 1, -1]);
+
+test('failures', function () {
+    expect(1)->toBeFalsy();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(null)->not->toBeFalsy();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeIn.php

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

tests/Features/Expect/toBeTruthy.php

@@ -0,0 +1,19 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes as truthy', function ($value) {
+    expect($value)->toBeTruthy();
+})->with([true, [1], 'false', 1, -1]);
+
+test('passes as not truthy', function ($value) {
+    expect($value)->not->toBeTruthy();
+})->with([false, '', null, 0, '0']);
+
+test('failures', function () {
+    expect(null)->toBeTruthy();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(1)->not->toBeTruthy();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toContain.php

@@ -3,17 +3,45 @@
 use PHPUnit\Framework\ExpectationFailedException;
 
 test('passes strings', function () {
-    expect([1, 2, 42])->toContain(42);
+    expect('Nuno')->toContain('Nu');
+});
+
+test('passes strings with multiple needles', function () {
+    expect('Nuno')->toContain('Nu', 'no');
 });
 
 test('passes arrays', function () {
-    expect('Nuno')->toContain('Nu');
+    expect([1, 2, 42])->toContain(42);
+});
+
+test('passes arrays with multiple needles', function () {
+    expect([1, 2, 42])->toContain(42, 2);
+});
+
+test('passes with array needles', function () {
+    expect([[1, 2, 3], 2, 42])->toContain(42, [1, 2, 3]);
 });
 
 test('failures', function () {
     expect([1, 2, 42])->toContain(3);
 })->throws(ExpectationFailedException::class);
 
+test('failures with multiple needles (all failing)', function () {
+    expect([1, 2, 42])->toContain(3, 4);
+})->throws(ExpectationFailedException::class);
+
+test('failures with multiple needles (some failing)', function () {
+    expect([1, 2, 42])->toContain(1, 3, 4);
+})->throws(ExpectationFailedException::class);
+
 test('not failures', function () {
     expect([1, 2, 42])->not->toContain(42);
 })->throws(ExpectationFailedException::class);
+
+test('not failures with multiple needles (all failing)', function () {
+    expect([1, 2, 42])->not->toContain(42, 2);
+})->throws(ExpectationFailedException::class);
+
+test('not failures with multiple needles (some failing)', function () {
+    expect([1, 2, 42])->not->toContain(42, 1);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveLength.php

@@ -0,0 +1,27 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+it('passes', function ($value) {
+    expect($value)->toHaveLength(9);
+})->with([
+    'Fortaleza', 'Sollefteå', 'Ιεράπετρα',
+    (object) [1, 2, 3, 4, 5, 6, 7, 8, 9],
+    collect([1, 2, 3, 4, 5, 6, 7, 8, 9]),
+]);
+
+it('passes with array', function () {
+    expect([1, 2, 3])->toHaveLength(3);
+});
+
+it('passes with *not*', function () {
+    expect('')->not->toHaveLength(1);
+});
+
+it('properly fails with *not*', function () {
+    expect('pest')->not->toHaveLength(4);
+})->throws(ExpectationFailedException::class);
+
+it('fails', function ($value) {
+    expect($value)->toHaveLength(1);
+})->with([1, 1.5, true, null])->throws(BadMethodCallException::class);

tests/Features/Expect/toHaveProperties.php

@@ -0,0 +1,26 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    $object = new stdClass();
+    $object->name = 'Jhon';
+    $object->age = 21;
+
+    expect($object)->toHaveProperties(['name', 'age']);
+});
+
+test('failures', function () {
+    $object = new stdClass();
+    $object->name = 'Jhon';
+
+    expect($object)->toHaveProperties(['name', 'age']);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    $object = new stdClass();
+    $object->name = 'Jhon';
+    $object->age = 21;
+
+    expect($object)->not->toHaveProperties(['name', 'age']);
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toThrow.php

@@ -0,0 +1,60 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes', function () {
+    expect(function () { throw new RuntimeException(); })->toThrow(RuntimeException::class);
+    expect(function () { throw new RuntimeException(); })->toThrow(Exception::class);
+    expect(function () { throw new RuntimeException(); })->toThrow(function (RuntimeException $e) {});
+    expect(function () { throw new RuntimeException('actual message'); })->toThrow(function (Exception $e) {
+        expect($e->getMessage())->toBe('actual message');
+    });
+    expect(function () {})->not->toThrow(Exception::class);
+    expect(function () { throw new RuntimeException('actual message'); })->toThrow('actual message');
+    expect(function () { throw new Exception(); })->not->toThrow(RuntimeException::class);
+    expect(function () { throw new RuntimeException('actual message'); })->toThrow(RuntimeException::class, 'actual message');
+    expect(function () { throw new RuntimeException('actual message'); })->toThrow(function (RuntimeException $e) {}, 'actual message');
+});
+
+test('failures 1', function () {
+    expect(function () {})->toThrow(RuntimeException::class);
+})->throws(ExpectationFailedException::class, 'Exception "' . RuntimeException::class . '" not thrown.');
+
+test('failures 2', function () {
+    expect(function () {})->toThrow(function (RuntimeException $e) {});
+})->throws(ExpectationFailedException::class, 'Exception "' . RuntimeException::class . '" not thrown.');
+
+test('failures 3', function () {
+    expect(function () { throw new Exception(); })->toThrow(function (RuntimeException $e) {});
+})->throws(ExpectationFailedException::class, 'Failed asserting that Exception Object');
+
+test('failures 4', function () {
+    expect(function () { throw new Exception('actual message'); })
+        ->toThrow(function (Exception $e) {
+            expect($e->getMessage())->toBe('expected message');
+        });
+})->throws(ExpectationFailedException::class, 'Failed asserting that two strings are identical');
+
+test('failures 5', function () {
+    expect(function () { throw new Exception('actual message'); })->toThrow('expected message');
+})->throws(ExpectationFailedException::class, 'Failed asserting that \'actual message\' contains "expected message".');
+
+test('failures 6', function () {
+    expect(function () {})->toThrow('actual message');
+})->throws(ExpectationFailedException::class, 'Exception with message "actual message" not thrown');
+
+test('failures 7', function () {
+    expect(function () { throw new RuntimeException('actual message'); })->toThrow(RuntimeException::class, 'expected message');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(function () { throw new RuntimeException(); })->not->toThrow(RuntimeException::class);
+})->throws(ExpectationFailedException::class);
+
+test('closure missing parameter', function () {
+    expect(function () {})->toThrow(function () {});
+})->throws(InvalidArgumentException::class, 'The given closure must have a single parameter type-hinted as the class string.');
+
+test('closure missing type-hint', function () {
+    expect(function () {})->toThrow(function ($e) {});
+})->throws(InvalidArgumentException::class, 'The given closure\'s parameter must be type-hinted as the class string.');

tests/Features/HigherOrderTests.php

@@ -18,10 +18,29 @@ it('resolves expect callables correctly')
     ->toBeString()
     ->toBe('bar');
 
+test('does not treat method names as callables')
+    ->expect('it')->toBeString();
+
 it('can tap into the test')
     ->expect('foo')->toBeString()
     ->tap(function () { expect($this)->toBeInstanceOf(TestCase::class); })
     ->toBe('foo')
     ->and('hello world')->toBeString();
 
+it('can pass datasets into the expect callables')
+    ->with([[1, 2, 3]])
+    ->expect(function (...$numbers) { return $numbers; })->toBe([1, 2, 3])
+    ->and(function (...$numbers) { return $numbers; })->toBe([1, 2, 3]);
+
+it('can pass datasets into the tap callable')
+    ->with([[1, 2, 3]])
+    ->tap(function (...$numbers) { expect($numbers)->toBe([1, 2, 3]); });
+
+it('can pass shared datasets into callables')
+    ->with('numbers.closure.wrapped')
+    ->expect(function ($value) { return $value; })
+    ->and(function ($value) { return $value; })
+    ->tap(function ($value) { expect($value)->toBeInt(); })
+    ->toBeInt();
+
 afterEach()->assertTrue(true);

tests/Hooks/AfterAllTest.php

@@ -2,26 +2,50 @@
 
 global $globalHook;
 
+// NOTE: this test does not have a $globalHook->calls offset since it is first
+// in the directory and thus will always run before the others. See also the
+// BeforeAllTest.php for details.
+
 uses()->afterAll(function () use ($globalHook) {
     expect($globalHook)
         ->toHaveProperty('afterAll')
         ->and($globalHook->afterAll)
-        ->toBe(0);
+        ->toBe(0)
+        ->and($globalHook->calls)
+        ->afterAll
+        ->toBe(1);
 
     $globalHook->afterAll = 1;
+    $globalHook->calls->afterAll++;
 });
 
 afterAll(function () use ($globalHook) {
     expect($globalHook)
         ->toHaveProperty('afterAll')
         ->and($globalHook->afterAll)
-        ->toBe(1);
+        ->toBe(1)
+        ->and($globalHook->calls)
+        ->afterAll
+        ->toBe(2);
 
     $globalHook->afterAll = 2;
+    $globalHook->calls->afterAll++;
 });
 
 test('global afterAll execution order', function () use ($globalHook) {
     expect($globalHook)
         ->not()
-        ->toHaveProperty('afterAll');
+        ->toHaveProperty('afterAll')
+        ->and($globalHook->calls)
+        ->afterAll
+        ->toBe(0);
+});
+
+it('only gets called once per file', function () use ($globalHook) {
+    expect($globalHook)
+        ->not()
+        ->toHaveProperty('afterAll')
+        ->and($globalHook->calls)
+        ->afterAll
+        ->toBe(0);
 });

tests/Hooks/BeforeAllTest.php

@@ -1,28 +1,56 @@
 <?php
 
+use Pest\Support\Str;
+
 global $globalHook;
 
-uses()->beforeAll(function () use ($globalHook) {
+// HACK: we have to determine our $globalHook->calls baseline. This is because
+// two other tests are executed before this one due to filename ordering.
+$args   = $_SERVER['argv'] ?? [];
+$single = (isset($args[1]) && Str::endsWith(__FILE__, $args[1])) || ($_SERVER['PEST_PARALLEL'] ?? false);
+$offset = $single ? 0 : 2;
+
+uses()->beforeAll(function () use ($globalHook, $offset) {
     expect($globalHook)
         ->toHaveProperty('beforeAll')
         ->and($globalHook->beforeAll)
-        ->toBe(0);
+        ->toBe(0)
+        ->and($globalHook->calls)
+        ->beforeAll
+        ->toBe(1 + $offset);
 
     $globalHook->beforeAll = 1;
+    $globalHook->calls->beforeAll++;
 });
 
-beforeAll(function () use ($globalHook) {
+beforeAll(function () use ($globalHook, $offset) {
     expect($globalHook)
         ->toHaveProperty('beforeAll')
         ->and($globalHook->beforeAll)
-        ->toBe(1);
+        ->toBe(1)
+        ->and($globalHook->calls)
+        ->beforeAll
+        ->toBe(2 + $offset);
 
     $globalHook->beforeAll = 2;
+    $globalHook->calls->beforeAll++;
 });
 
-test('global beforeAll execution order', function () use ($globalHook) {
+test('global beforeAll execution order', function () use ($globalHook, $offset) {
     expect($globalHook)
         ->toHaveProperty('beforeAll')
         ->and($globalHook->beforeAll)
-        ->toBe(2);
+        ->toBe(2)
+        ->and($globalHook->calls)
+        ->beforeAll
+        ->toBe(3 + $offset);
+});
+
+it('only gets called once per file', function () use ($globalHook, $offset) {
+    expect($globalHook)
+        ->beforeAll
+        ->toBe(2)
+        ->and($globalHook->calls)
+        ->beforeAll
+        ->toBe(3 + $offset);
 });

tests/PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder/CustomTestCaseInSubFolder.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Tests\SubFolder\SubFolder\SubFolder;
+namespace Tests\CustomTestCaseInSubFolders\SubFolder\SubFolder;
 
 use PHPUnit\Framework\TestCase;
 

tests/PHPUnit/Pest.php

@@ -1,3 +0,0 @@
-<?php
-
-uses(Tests\SubFolder\SubFolder\SubFolder\CustomTestCaseInSubFolder::class)->in('CustomTestCaseInSubFolders/SubFolder');

tests/Pest.php

@@ -1,8 +1,13 @@
 <?php
 
+use Tests\CustomTestCaseInSubFolders\SubFolder\SubFolder\CustomTestCaseInSubFolder;
+
+uses(CustomTestCaseInSubFolder::class)->in('PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder');
+
 uses()->group('integration')->in('Visual');
 
-$globalHook = (object) []; // NOTE: global test value container to be mutated and checked across files, as needed
+// NOTE: global test value container to be mutated and checked across files, as needed
+$globalHook = (object) ['calls' => (object) ['beforeAll' => 0, 'afterAll' => 0]];
 
 uses()
     ->beforeEach(function () {
@@ -10,11 +15,13 @@ uses()
     })
     ->beforeAll(function () use ($globalHook) {
         $globalHook->beforeAll = 0;
+        $globalHook->calls->beforeAll++;
     })
     ->afterEach(function () {
         $this->ith = 0;
     })
     ->afterAll(function () use ($globalHook) {
         $globalHook->afterAll = 0;
+        $globalHook->calls->afterAll++;
     })
     ->in('Hooks');

tests/Unit/TestSuite.php

@@ -1,5 +1,6 @@
 <?php
 
+use Pest\Exceptions\DatasetMissing;
 use Pest\Exceptions\TestAlreadyExist;
 use Pest\TestSuite;
 
@@ -7,7 +8,44 @@ it('does not allow to add the same test description twice', function () {
     $testSuite = new TestSuite(getcwd(), 'tests');
     $test = function () {};
     $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test));
-    $this->expectException(TestAlreadyExist::class);
-    $this->expectExceptionMessage(sprintf('A test with the description `%s` already exist in the filename `%s`.', 'foo', __FILE__));
     $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test));
+})->throws(
+    TestAlreadyExist::class,
+    sprintf('A test with the description `%s` already exist in the filename `%s`.', 'foo', __FILE__),
+);
+
+it('alerts users about tests with arguments but no input', function () {
+    $testSuite = new TestSuite(getcwd(), 'tests');
+    $test = function (int $arg) {};
+    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test));
+})->throws(
+    DatasetMissing::class,
+    sprintf("A test with the description '%s' has %d argument(s) ([%s]) and no dataset(s) provided in %s", 'foo', 1, 'int $arg', __FILE__),
+);
+
+it('can return an array of all test suite filenames', function () {
+    $testSuite = new TestSuite(getcwd(), 'tests');
+    $test = function () {};
+    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test));
+    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'bar', $test));
+
+    expect($testSuite->tests->getFilenames())->toEqual([
+        __FILE__,
+        __FILE__,
+    ]);
+});
+
+it('can filter the test suite filenames to those with the only method', function () {
+    $testSuite = new TestSuite(getcwd(), 'tests');
+    $test = function () {};
+
+    $testWithOnly = new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test);
+    $testWithOnly->only = true;
+    $testSuite->tests->set($testWithOnly);
+
+    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory('Baz/Bar/Boo.php', 'bar', $test));
+
+    expect($testSuite->tests->getFilenames())->toEqual([
+        __FILE__,
+    ]);
 });

tests/Visual/JUnit.php

@@ -0,0 +1,29 @@
+<?php
+
+use Pest\Logging\JUnit;
+use PHPUnit\Framework\AssertionFailedError;
+use PHPUnit\Framework\TestSuite;
+use PHPUnit\Framework\Warning;
+
+beforeEach(function () {
+    file_put_contents(__DIR__ . '/junit.html', '');
+});
+
+it('is can successfully call all public methods', function () {
+    $junit = new JUnit(__DIR__ . '/junit.html');
+    $junit->startTestSuite(new TestSuite());
+    $junit->startTest($this);
+    $junit->addError($this, new Exception(), 0);
+    $junit->addFailure($this, new AssertionFailedError(), 0);
+    $junit->addWarning($this, new Warning(), 0);
+    $junit->addIncompleteTest($this, new Exception(), 0);
+    $junit->addRiskyTest($this, new Exception(), 0);
+    $junit->addSkippedTest($this, new Exception(), 0);
+    $junit->endTest($this, 0);
+    $junit->endTestSuite(new TestSuite());
+    $this->expectNotToPerformAssertions();
+});
+
+afterEach(function () {
+    unlink(__DIR__ . '/junit.html');
+});

tests/Visual/Success.php

@@ -9,7 +9,7 @@ test('visual snapshot of test suite on success', function () {
     ]);
 
     $output = function () use ($testsPath) {
-        $process = (new Symfony\Component\Process\Process(['php', 'bin/pest'], dirname($testsPath), ['EXCLUDE' => 'integration', 'REBUILD_SNAPSHOTS' => false]));
+        $process = (new Symfony\Component\Process\Process(['php', 'bin/pest'], dirname($testsPath), ['EXCLUDE' => 'integration', 'REBUILD_SNAPSHOTS' => false, 'PARATEST' => 0]));
 
         $process->run();
 

tests/Visual/TeamCity.php

@@ -0,0 +1,32 @@
+<?php
+
+use Pest\Logging\TeamCity;
+use PHPUnit\Framework\AssertionFailedError;
+use PHPUnit\Framework\TestResult;
+use PHPUnit\Framework\TestSuite;
+use PHPUnit\Framework\Warning;
+use PHPUnit\TextUI\DefaultResultPrinter;
+
+beforeEach(function () {
+    file_put_contents(__DIR__ . '/output.txt', '');
+});
+
+it('is can successfully call all public methods', function () {
+    $teamCity = new TeamCity(__DIR__ . '/output.txt', false, DefaultResultPrinter::COLOR_ALWAYS);
+    expect($teamCity::isPestTest($this))->toBeTrue();
+    $teamCity->startTestSuite(new TestSuite());
+    $teamCity->startTest($this);
+    $teamCity->addError($this, new Exception('Don\'t worry about this error. Its purposeful.'), 0);
+    $teamCity->addFailure($this, new AssertionFailedError('Don\'t worry about this error. Its purposeful.'), 0);
+    $teamCity->addWarning($this, new Warning(), 0);
+    $teamCity->addIncompleteTest($this, new Exception(), 0);
+    $teamCity->addRiskyTest($this, new Exception(), 0);
+    $teamCity->addSkippedTest($this, new Exception(), 0);
+    $teamCity->endTest($this, 0);
+    $teamCity->printResult(new TestResult());
+    $teamCity->endTestSuite(new TestSuite());
+});
+
+afterEach(function () {
+    unlink(__DIR__ . '/output.txt');
+});