release: v1.21.0

This reverts commit e853792a59, reversing
changes made to 205238fcbf.

.github/workflows/tests.yml

@@ -8,9 +8,14 @@ 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']
+        exclude:
+          - php: 8.1
+            os: macos-latest
+          - php: 8.1
+            os: windows-latest
 
     name: PHP ${{ matrix.php }} - ${{ matrix.os }} - ${{ matrix.dependency-version }} - ${{ matrix.parallel }}
 
@@ -30,13 +35,8 @@ 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 ${{ matrix.parallel }}

CHANGELOG.md

@@ -4,6 +4,35 @@ 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/).
 
+## [v1.21.0 (2021-11-17)](https://github.com/pestphp/pest/compare/v1.20.0...v1.21.0)
+### Added
+- warn about xdebug modes ([1e011c](https://github.com/pestphp/pest/commit/1e011c7b4074d08f5dabab1f927d45383c85d210))
+
+## [v1.20.0 (2021-09-25)](https://github.com/pestphp/pest/compare/v1.19.0...v1.20.0)
+### Added
+- `throwsIf` test call ([#371](https://github.com/pestphp/pest/pull/371))
+- `--ci` CLI option to ignore development options like `->local()` ([#405](https://github.com/pestphp/pest/pull/405))
+- `when` conditional expectation ([#406](https://github.com/pestphp/pest/pull/406))
+- `unless` conditional expectation ([b43a598](https://github.com/pestphp/pest/commit/b43a59868d5b790a28cbb29c6110c9f068b0b812))
+- `match` conditional expectation ([#407](https://github.com/pestphp/pest/pull/407))
+
+### Fixed
+- `sequence` with more expectations than iterable elements ([#399](https://github.com/pestphp/pest/pull/399))
+
+## [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))
+- `toHaveProperties` expectation ([#391](https://github.com/pestphp/pest/pull/391))
+
+## [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))

CONTRIBUTING.md

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

README.md

@@ -19,12 +19,18 @@
 
 We would like to extend our thanks to the following sponsors for funding Pest development. If you are interested in becoming a sponsor, please visit the Nuno Maduro's [Sponsors page](https://github.com/sponsors/nunomaduro).
 
+### Platinum Sponsors
+
+- **[Spatie](https://spatie.be)**
+- **[Worksome](https://www.worksome.com/)**
+
 ### Premium Sponsors
 
-- **[Akaunting](https://akaunting.com)**
-- **[Codecourse](https://codecourse.com/)**
-- **[Meema](https://meema.io/)**
-- **[Scout APM](https://scoutapm.com)**
-- **[Spatie](https://spatie.be/)**
+- [Akaunting](https://akaunting.com)
+- [Auth0](https://auth0.com)
+- [Codecourse](https://codecourse.com/)
+- [Fathom Analytics](https://usefathom.com/)
+- [Meema](https://meema.io)
+- [Scout APM](https://scoutapm.com)
 
 Pest is an open-sourced software licensed under the **[MIT license](https://opensource.org/licenses/MIT)**.

RELEASE.md

@@ -10,6 +10,7 @@ When releasing a new version of Pest there are some checks and updates that need
 - 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`
+- Publish release here: [github.com/pestphp/pest/releases/new](https://github.com/pestphp/pest/releases/new).
 
 ### Plugins
 

composer.json

@@ -18,7 +18,7 @@
     ],
     "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": "^9.5.5"
     },
@@ -79,7 +79,8 @@
             "plugins": [
                 "Pest\\Plugins\\Coverage",
                 "Pest\\Plugins\\Init",
-                "Pest\\Plugins\\Version"
+                "Pest\\Plugins\\Version",
+                "Pest\\Plugins\\Environment"
             ]
         },
         "laravel": {

phpstan-baseline.neon

@@ -0,0 +1,292 @@
+parameters:
+	ignoreErrors:
+		-
+			message: "#^Cannot access an offset on mixed\\.$#"
+			count: 1
+			path: src/Actions/AddsDefaults.php
+
+		-
+			message: "#^Parameter \\#1 \\$out of class Pest\\\\Logging\\\\JUnit constructor expects string, mixed given\\.$#"
+			count: 1
+			path: src/Actions/AddsDefaults.php
+
+		-
+			message: "#^Parameter \\#2 \\$verbose of class NunoMaduro\\\\Collision\\\\Adapters\\\\Phpunit\\\\Printer constructor expects bool, mixed given\\.$#"
+			count: 1
+			path: src/Actions/AddsDefaults.php
+
+		-
+			message: "#^Parameter \\#2 \\$verbose of class Pest\\\\Logging\\\\TeamCity constructor expects bool, mixed given\\.$#"
+			count: 1
+			path: src/Actions/AddsDefaults.php
+
+		-
+			message: "#^Parameter \\#3 \\$colors of class NunoMaduro\\\\Collision\\\\Adapters\\\\Phpunit\\\\Printer constructor expects string, mixed given\\.$#"
+			count: 1
+			path: src/Actions/AddsDefaults.php
+
+		-
+			message: "#^Parameter \\#3 \\$colors of class Pest\\\\Logging\\\\TeamCity constructor expects string, mixed given\\.$#"
+			count: 1
+			path: src/Actions/AddsDefaults.php
+
+		-
+			message: "#^Parameter \\#1 \\$filename of function file_exists expects string, mixed given\\.$#"
+			count: 1
+			path: src/Actions/ValidatesConfiguration.php
+
+		-
+			message: "#^Parameter \\#1 \\$filename of method PHPUnit\\\\TextUI\\\\XmlConfiguration\\\\Loader\\:\\:load\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Actions/ValidatesConfiguration.php
+
+		-
+			message: "#^Parameter \\#1 \\$loader of class PHPUnit\\\\TextUI\\\\TestRunner constructor expects PHPUnit\\\\Runner\\\\TestSuiteLoader\\|null, mixed given\\.$#"
+			count: 1
+			path: src/Console/Command.php
+
+		-
+			message: "#^Parameter \\#1 \\$testSuite of static method Pest\\\\Actions\\\\AddsTests\\:\\:to\\(\\) expects iterable\\<PHPUnit\\\\Framework\\\\TestCase\\>&PHPUnit\\\\Framework\\\\TestSuite, mixed given\\.$#"
+			count: 1
+			path: src/Console/Command.php
+
+		-
+			message: "#^Parameter \\#2 \\$suffixes of method SebastianBergmann\\\\FileIterator\\\\Facade\\:\\:getFilesAsArray\\(\\) expects array\\|string, mixed given\\.$#"
+			count: 1
+			path: src/Console/Command.php
+
+		-
+			message: "#^Argument of an invalid type mixed supplied for foreach, only iterables are supported\\.$#"
+			count: 1
+			path: src/Datasets.php
+
+		-
+			message: "#^Method Pest\\\\Datasets\\:\\:getDataSetsCombinations\\(\\) has parameter \\$combinations with no value type specified in iterable type array\\.$#"
+			count: 1
+			path: src/Datasets.php
+
+		-
+			message: "#^Method Pest\\\\Datasets\\:\\:getDataSetsCombinations\\(\\) return type has no value type specified in iterable type array\\.$#"
+			count: 1
+			path: src/Datasets.php
+
+		-
+			message: "#^Method Pest\\\\Datasets\\:\\:processDatasets\\(\\) return type has no value type specified in iterable type array\\.$#"
+			count: 1
+			path: src/Datasets.php
+
+		-
+			message: "#^Parameter \\#1 \\$key of static method Pest\\\\Datasets\\:\\:getDataSetDescription\\(\\) expects int\\|string, mixed given\\.$#"
+			count: 1
+			path: src/Datasets.php
+
+		-
+			message: "#^Argument of an invalid type mixed supplied for foreach, only iterables are supported\\.$#"
+			count: 1
+			path: src/Each.php
+
+		-
+			message: "#^Parameter \\#1 \\$ of callable callable\\(Pest\\\\Expectation\\<TValue\\>\\)\\: mixed expects Pest\\\\Expectation\\<TValue\\>, Pest\\\\Expectation\\<mixed\\> given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$actualJson of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertJson\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$directory of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertDirectoryExists\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$directory of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertDirectoryIsReadable\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$directory of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertDirectoryIsWritable\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$file of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFileIsReadable\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$file of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFileIsWritable\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$filename of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFileExists\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$json of function json_decode expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$needle of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertStringContainsString\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$object_or_class of function property_exists expects object\\|string, mixed given\\.$#"
+			count: 2
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#1 \\$value of method Pest\\\\Expectation\\<TValue\\>\\:\\:and\\(\\) expects TValue, mixed given\\.$#"
+			count: 2
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$haystack of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertContains\\(\\) expects iterable, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$haystack of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertCount\\(\\) expects Countable\\|iterable, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$string of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertMatchesRegularExpression\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$string of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertStringEndsWith\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$string of static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertStringStartsWith\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$value of method Pest\\\\Expectation\\<TValue\\>\\:\\:retrieve\\(\\) expects array\\<string, null\\>\\|object, mixed given\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Trying to invoke mixed but it's not a callable\\.$#"
+			count: 1
+			path: src/Expectation.php
+
+		-
+			message: "#^Method Pest\\\\Factories\\\\TestCaseFactory\\:\\:build\\(\\) should return array\\<int, PHPUnit\\\\Framework\\\\TestCase\\> but returns array\\<int, object\\>\\.$#"
+			count: 1
+			path: src/Factories/TestCaseFactory.php
+
+		-
+			message: "#^Function it\\(\\) should return Pest\\\\PendingObjects\\\\TestCall but returns mixed\\.$#"
+			count: 1
+			path: src/Functions.php
+
+		-
+			message: "#^Parameter \\#2 \\$classAndTraits of class Pest\\\\PendingObjects\\\\UsesCall constructor expects array\\<int, string\\>, array\\<int\\|string, string\\> given\\.$#"
+			count: 1
+			path: src/Functions.php
+
+		-
+			message: "#^Parameter \\#2 \\$value of method Pest\\\\HigherOrderExpectation\\:\\:retrieve\\(\\) expects array\\<string, null\\>\\|object, mixed given\\.$#"
+			count: 1
+			path: src/HigherOrderExpectation.php
+
+		-
+			message: "#^Dead catch \\- ReflectionException is never thrown in the try block\\.$#"
+			count: 1
+			path: src/Logging/JUnit.php
+
+		-
+			message: "#^Parameter \\#2 \\$value of method DOMElement\\:\\:setAttribute\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: src/Logging/JUnit.php
+
+		-
+			message: "#^Parameter \\$test of method Pest\\\\Logging\\\\JUnit\\:\\:startTest\\(\\) has invalid type Pest\\\\Concerns\\\\Testable\\.$#"
+			count: 1
+			path: src/Logging/JUnit.php
+
+		-
+			message: "#^Parameter \\$test of method Pest\\\\Logging\\\\TeamCity\\:\\:endTest\\(\\) has invalid type Pest\\\\Concerns\\\\Testable\\.$#"
+			count: 1
+			path: src/Logging/TeamCity.php
+
+		-
+			message: "#^Parameter \\$test of method Pest\\\\Logging\\\\TeamCity\\:\\:startTest\\(\\) has invalid type Pest\\\\Concerns\\\\Testable\\.$#"
+			count: 1
+			path: src/Logging/TeamCity.php
+
+		-
+			message: "#^Dead catch \\- PHPUnit\\\\Framework\\\\ExpectationFailedException is never thrown in the try block\\.$#"
+			count: 1
+			path: src/OppositeExpectation.php
+
+		-
+			message: "#^Property Pest\\\\PendingObjects\\\\UsesCall\\:\\:\\$groups \\(array\\<int, string\\>\\) does not accept array\\<int\\|string, string\\>\\.$#"
+			count: 1
+			path: src/PendingObjects/UsesCall.php
+
+		-
+			message: "#^Cannot cast mixed to float\\.$#"
+			count: 1
+			path: src/Plugins/Coverage.php
+
+		-
+			message: "#^Static property Pest\\\\Plugins\\\\Environment\\:\\:\\$instance is unused\\.$#"
+			count: 1
+			path: src/Plugins/Environment.php
+
+		-
+			message: "#^Method Pest\\\\Support\\\\Container\\:\\:get\\(\\) should return object but returns mixed\\.$#"
+			count: 1
+			path: src/Support/Container.php
+
+		-
+			message: "#^Argument of an invalid type mixed supplied for foreach, only iterables are supported\\.$#"
+			count: 1
+			path: src/Support/ExceptionTrace.php
+
+		-
+			message: "#^Cannot access offset 'file' on mixed\\.$#"
+			count: 1
+			path: src/Support/ExceptionTrace.php
+
+		-
+			message: "#^Parameter \\#1 \\$haystack of function mb_strpos expects string, mixed given\\.$#"
+			count: 1
+			path: src/Support/ExceptionTrace.php
+
+		-
+			message: "#^Parameter \\#2 \\$array of function key_exists expects array, mixed given\\.$#"
+			count: 1
+			path: src/Support/ExceptionTrace.php
+
+		-
+			message: "#^Method Pest\\\\Support\\\\HigherOrderCallables\\:\\:expect\\(\\) should return Pest\\\\Expectation\\<TValue\\> but returns Pest\\\\Expectation\\<mixed\\>\\.$#"
+			count: 1
+			path: src/Support/HigherOrderCallables.php
+
+		-
+			message: "#^Parameter \\#1 \\$target of method Pest\\\\Support\\\\HigherOrderMessage\\:\\:call\\(\\) expects object, mixed given\\.$#"
+			count: 1
+			path: src/Support/HigherOrderMessageCollection.php
+
+		-
+			message: "#^Constant Pest\\\\Support\\\\HigherOrderTapProxy\\:\\:UNDEFINED_PROPERTY is unused\\.$#"
+			count: 1
+			path: src/Support/HigherOrderTapProxy.php
+
+		-
+			message: "#^Dead catch \\- Throwable is never thrown in the try block\\.$#"
+			count: 1
+			path: src/Support/HigherOrderTapProxy.php
+

phpstan.neon

@@ -2,6 +2,7 @@ includes:
     - vendor/phpstan/phpstan-strict-rules/rules.neon
     - vendor/ergebnis/phpstan-rules/rules.neon
     - vendor/thecodingmachine/phpstan-strict-rules/phpstan-strict-rules.neon
+    - phpstan-baseline.neon
 
 parameters:
     level: max
@@ -23,9 +24,6 @@ parameters:
         -
             message: '#Call to an undefined method PHPUnit\\Framework\\Test::getName\(\)#'
             path: src/Logging
-        -
-            message: '#invalid typehint type Pest\\Concerns\\Testable#'
-            path: src/Logging
         -
             message: '#is not subtype of native type PHPUnit\\Framework\\Test#'
             path: src/Logging

src/Contracts/Plugins/HandlesArguments.php

@@ -12,9 +12,6 @@ interface HandlesArguments
     /**
      * Allows to handle custom command line arguments.
      *
-     * PLEASE NOTE: it is necessary to remove any custom argument from the array
-     * because otherwise the application will complain about them
-     *
      * @param array<int, string> $arguments
      *
      * @return array<int, string> the updated list of arguments

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
@@ -102,7 +108,6 @@ final class Expectation
     public function ray(...$arguments): self
     {
         if (function_exists('ray')) {
-            // @phpstan-ignore-next-line
             ray($this->value, ...$arguments);
         }
 
@@ -148,9 +153,10 @@ final class Expectation
             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);
+        $value          = is_array($this->value) ? $this->value : iterator_to_array($this->value);
+        $keys           = array_keys($value);
+        $values         = array_values($value);
+        $callbacksCount = count($callbacks);
 
         $index = 0;
 
@@ -159,6 +165,10 @@ final class Expectation
             $index       = $index < count($values) - 1 ? $index + 1 : 0;
         }
 
+        if ($callbacksCount > count($values)) {
+            Assert::assertLessThanOrEqual(count($value), count($callbacks));
+        }
+
         foreach ($values as $key => $item) {
             if (is_callable($callbacks[$key])) {
                 call_user_func($callbacks[$key], new self($item), new self($keys[$key]));
@@ -171,6 +181,88 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * If the subject matches one of the given "expressions", the expression callback will run.
+     *
+     * @template TMatchSubject of array-key
+     *
+     * @param callable(): TMatchSubject|TMatchSubject $subject
+     * @param array<TMatchSubject, (callable(Expectation<TValue>): mixed)|TValue> $expressions
+     */
+    public function match($subject, array $expressions): Expectation
+    {
+        $subject = is_callable($subject)
+            ? $subject
+            : function () use ($subject) {
+                return $subject;
+            };
+
+        $subject   = $subject();
+
+        $matched = false;
+
+        foreach ($expressions as $key => $callback) {
+            if ($subject != $key) {
+                continue;
+            }
+
+            $matched = true;
+
+            if (is_callable($callback)) {
+                $callback(new self($this->value));
+                continue;
+            }
+
+            $this->and($this->value)->toEqual($callback);
+
+            break;
+        }
+
+        if ($matched === false) {
+            throw new ExpectationFailedException('Unhandled match value.');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Apply the callback if the given "condition" is falsy.
+     *
+     * @param  (callable(): bool)|bool $condition
+     * @param callable(Expectation<TValue>): mixed $callback
+     */
+    public function unless($condition, callable $callback): Expectation
+    {
+        $condition = is_callable($condition)
+            ? $condition
+            : static function () use ($condition): bool {
+                return (bool) $condition; // @phpstan-ignore-line
+            };
+
+        return $this->when(!$condition(), $callback);
+    }
+
+    /**
+     * Apply the callback if the given "condition" is truthy.
+     *
+     * @param  (callable(): bool)|bool $condition
+     * @param callable(Expectation<TValue>): mixed $callback
+     */
+    public function when($condition, callable $callback): Expectation
+    {
+        $condition = is_callable($condition)
+            ? $condition
+            : static function () use ($condition): bool {
+                return (bool) $condition; // @phpstan-ignore-line
+            };
+
+        if ($condition()) {
+            $callback($this->and($this->value));
+        }
+
+        return $this;
+    }
+
     /**
      * Asserts that two variables have the same type and
      * value. Used on objects, it asserts that two
@@ -321,6 +413,36 @@ 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.
      */
@@ -350,6 +472,20 @@ 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.
      *
@@ -749,6 +885,56 @@ 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/Logging/JUnit.php

@@ -283,7 +283,6 @@ final class JUnit extends Printer implements TestListener
             $class = new ReflectionClass($test);
             // @codeCoverageIgnoreStart
         } catch (ReflectionException $e) {
-            // @phpstan-ignore-next-line
             throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
         }
         // @codeCoverageIgnoreEnd

src/OppositeExpectation.php

@@ -51,6 +51,8 @@ final class OppositeExpectation
      * Handle dynamic method calls into the original expectation.
      *
      * @param array<int, mixed> $arguments
+     *
+     * @return Expectation|never
      */
     public function __call(string $name, array $arguments): Expectation
     {
@@ -61,12 +63,13 @@ final class OppositeExpectation
             return $this->original;
         }
 
-        // @phpstan-ignore-next-line
         $this->throwExpectationFailedException($name, $arguments);
     }
 
     /**
      * Handle dynamic properties gets into the original expectation.
+     *
+     * @return Expectation|never
      */
     public function __get(string $name): Expectation
     {
@@ -77,7 +80,6 @@ final class OppositeExpectation
             return $this->original;
         }
 
-        // @phpstan-ignore-next-line
         $this->throwExpectationFailedException($name);
     }
 
@@ -85,6 +87,8 @@ final class OppositeExpectation
      * Creates a new expectation failed exception with a nice readable message.
      *
      * @param array<int, mixed> $arguments
+     *
+     * @return never
      */
     private function throwExpectationFailedException(string $name, array $arguments = []): void
     {

src/PendingObjects/TestCall.php

@@ -78,6 +78,26 @@ final class TestCall
         return $this;
     }
 
+    /**
+     * Asserts that the test throws the given `$exceptionClass` when called if the given condition is true.
+     *
+     * @param (callable(): bool)|bool $condition
+     */
+    public function throwsIf($condition, string $exception, string $exceptionMessage = null): TestCall
+    {
+        $condition = is_callable($condition)
+            ? $condition
+            : static function () use ($condition): bool {
+                return (bool) $condition; // @phpstan-ignore-line
+            };
+
+        if ($condition()) {
+            return $this->throws($exception, $exceptionMessage);
+        }
+
+        return $this;
+    }
+
     /**
      * Runs the current test multiple times with
      * each item of the given `iterable`.
@@ -140,7 +160,7 @@ final class TestCall
 
         $condition = is_callable($condition)
             ? $condition
-            : function () use ($condition) { /* @phpstan-ignore-line */
+            : function () use ($condition) {
                 return $condition;
             };
 

src/Pest.php

@@ -6,7 +6,7 @@ namespace Pest;
 
 function version(): string
 {
-    return '1.16.0';
+    return '1.21.0';
 }
 
 function testDirectory(string $file = ''): string

src/Plugins/Environment.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Plugins;
+
+use Pest\Contracts\Plugins\HandlesArguments;
+
+/**
+ * @internal
+ */
+final class Environment implements HandlesArguments
+{
+    /**
+     * The continuous integration environment.
+     */
+    public const CI    = 'ci';
+
+    /**
+     * The local environment.
+     */
+    public const LOCAL = 'local';
+
+    /**
+     * @var \Pest\Plugins\Environment|null
+     */
+    private static $instance;
+
+    /**
+     * The current environment.
+     *
+     * @var string|null
+     */
+    private static $name;
+
+    /**
+     * Allows to handle custom command line arguments.
+     *
+     * @param array<int, string> $arguments
+     *
+     * @return array<int, string> the updated list of arguments
+     */
+    public function handleArguments(array $arguments): array
+    {
+        foreach ($arguments as $index => $argument) {
+            if ($argument === '--ci') {
+                unset($arguments[$index]);
+
+                self::$name = self::CI;
+            }
+        }
+
+        return array_values($arguments);
+    }
+
+    /**
+     * Gets the environment name.
+     */
+    public static function name(string $name = null): string
+    {
+        if (is_string($name)) {
+            self::$name = $name;
+        }
+
+        return self::$name ?? self::LOCAL;
+    }
+}

src/Repositories/TestRepository.php

@@ -11,6 +11,7 @@ use Pest\Exceptions\TestAlreadyExist;
 use Pest\Exceptions\TestCaseAlreadyInUse;
 use Pest\Exceptions\TestCaseClassOrTraitNotFound;
 use Pest\Factories\TestCaseFactory;
+use Pest\Plugins\Environment;
 use Pest\Support\Reflection;
 use Pest\Support\Str;
 use Pest\TestSuite;
@@ -22,7 +23,7 @@ use PHPUnit\Framework\TestCase;
 final class TestRepository
 {
     /**
-     * @var string
+     * @var non-empty-string
      */
     private const SEPARATOR = '>>>';
 
@@ -119,6 +120,10 @@ final class TestRepository
      */
     private function testsUsingOnly(): array
     {
+        if (Environment::name() === Environment::CI) {
+            return [];
+        }
+
         return array_filter($this->state, function ($testFactory): bool {
             return $testFactory->only;
         });

src/Support/Coverage.php

@@ -30,14 +30,21 @@ final class Coverage
     }
 
     /**
-     * Runs true there is any code
-     * coverage driver available.
+     * Runs true there is any code coverage driver available.
      */
     public static function isAvailable(): bool
     {
         return (new Runtime())->canCollectCodeCoverage();
     }
 
+    /**
+     * If the user is using Xdebug.
+     */
+    public static function usingXdebug(): bool
+    {
+        return (new Runtime())->hasXdebug();
+    }
+
     /**
      * Reports the code coverage report to the
      * console and returns the result in float.
@@ -45,6 +52,14 @@ final class Coverage
     public static function report(OutputInterface $output): float
     {
         if (!file_exists($reportPath = self::getPath())) {
+            if (self::usingXdebug()) {
+                $output->writeln(
+                    "  <fg=black;bg=yellow;options=bold> WARN </> Unable to get coverage using Xdebug. Did you set <href=https://xdebug.org/docs/code_coverage#mode>Xdebug's coverage mode</>?</>",
+                );
+
+                return 0.0;
+            }
+
             throw ShouldNotHappen::fromMessage(sprintf('Coverage not found in path: %s.', $reportPath));
         }
 

src/TestSuite.php

@@ -91,8 +91,8 @@ final class TestSuite
         $this->afterEach  = new AfterEachRepository();
         $this->afterAll   = new AfterAllRepository();
 
-        $this->rootPath = (string) realpath($rootPath);
-        $this->testPath = $testPath;
+        $this->rootPath   = (string) realpath($rootPath);
+        $this->testPath   = $testPath;
     }
 
     /**

tests/.snapshots/success.txt

@@ -107,6 +107,11 @@
   ✓ it catch exceptions
   ✓ it catch exceptions and messages
   ✓ it can just define the message
+  ✓ it not catch exceptions if given condition is false
+  ✓ it catch exceptions if given condition is true
+  ✓ it catch exceptions and messages if given condition is true
+  ✓ it can just define the message if given condition is true
+  ✓ it can just define the message if given condition is 1
 
    PASS  Tests\Features\Expect\HigherOrder\methods
   ✓ it can access methods
@@ -158,6 +163,17 @@
   ✓ it properly parses json string
   ✓ fails with broken json string
 
+   PASS  Tests\Features\Expect\matchExpectation
+  ✓ it pass
+  ✓ it failures
+  ✓ it runs with truthy
+  ✓ it runs with falsy
+  ✓ it runs with truthy closure condition
+  ✓ it runs with falsy closure condition
+  ✓ it can be passed non-callable values
+  ✓ it fails with unhandled match
+  ✓ it can be used in higher order tests
+
    PASS  Tests\Features\Expect\not
   ✓ not property calls
 
@@ -168,7 +184,7 @@
   ✓ 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
+  ✓ fails if the number of iterable items is greater than the number of expectations
   ✓ it works with associative arrays
   ✓ it can be passed non-callable values
   ✓ it can be passed a mixture of value types
@@ -417,6 +433,25 @@
    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
@@ -449,6 +484,37 @@
   ✓ 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\Expect\unless
+  ✓ it pass
+  ✓ it failures
+  ✓ it runs with truthy
+  ✓ it skips with falsy
+  ✓ it runs with truthy closure condition
+  ✓ it skips with falsy closure condition
+  ✓ it can be used in higher order tests
+
+   PASS  Tests\Features\Expect\when
+  ✓ it pass
+  ✓ it failures
+  ✓ it runs with truthy
+  ✓ it skips with falsy
+  ✓ it runs with truthy closure condition
+  ✓ it skips with falsy closure condition
+  ✓ it can be used in higher order tests
+
    PASS  Tests\Features\Helpers
   ✓ it can set/get properties on $this
   ✓ it throws error if property do not exist
@@ -591,6 +657,10 @@
   ✓ 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\Environment
+  ✓ environment is set to CI when --ci option is used
+  ✓ environment is set to Local when --ci option is not used
+
    PASS  Tests\Unit\Plugins\Version
   ✓ it outputs the version when --version is used
   ✓ it do not outputs version when --version is not used
@@ -616,6 +686,7 @@
   ✓ 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
+  ✓ it does not filter the test suite filenames to those with the only method when working in CI pipeline
 
    PASS  Tests\Visual\Help
   ✓ visual snapshot of help command output
@@ -649,5 +720,5 @@
   ✓ it is a test
   ✓ it uses correct parent class
 
-  Tests:  4 incompleted, 9 skipped, 421 passed
+  Tests:  4 incompleted, 9 skipped, 478 passed
   

tests/Features/Exceptions.php

@@ -17,3 +17,23 @@ it('catch exceptions and messages', function () {
 it('can just define the message', function () {
     throw new Exception('Something bad happened');
 })->throws('Something bad happened');
+
+it('not catch exceptions if given condition is false', function () {
+    $this->assertTrue(true);
+})->throwsIf(false, Exception::class);
+
+it('catch exceptions if given condition is true', function () {
+    throw new Exception('Something bad happened');
+})->throwsIf(function () { return true; }, Exception::class);
+
+it('catch exceptions and messages if given condition is true', function () {
+    throw new Exception('Something bad happened');
+})->throwsIf(true, Exception::class, 'Something bad happened');
+
+it('can just define the message if given condition is true', function () {
+    throw new Exception('Something bad happened');
+})->throwsIf(true, 'Something bad happened');
+
+it('can just define the message if given condition is 1', function () {
+    throw new Exception('Something bad happened');
+})->throwsIf(1, 'Something bad happened');

tests/Features/Expect/matchExpectation.php

@@ -0,0 +1,148 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    $this->matched = null;
+});
+
+it('pass', function () {
+    expect('baz')
+        ->match('foo', [
+                'bar' => function ($value) {
+                    $this->matched = 'bar';
+
+                    return $value->toEqual('bar');
+                },
+                'foo' => function ($value) {
+                    $this->matched = 'baz';
+
+                    return $value->toEqual('baz');
+                },
+            ]
+        )
+        ->toEqual($this->matched);
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('failures', function () {
+    expect(true)
+        ->match('foo', [
+                'bar' => function ($value) {
+                    return $value->toBeTrue();
+                },
+                'foo' => function ($value) {
+                    return $value->toBeFalse();
+                },
+            ]
+        );
+})->throws(ExpectationFailedException::class, 'true is false');
+
+it('runs with truthy', function () {
+    expect('foo')
+        ->match(1, [
+                'bar' => function ($value) {
+                    $this->matched = 'bar';
+
+                    return $value->toEqual('bar');
+                },
+                true => function ($value) {
+                    $this->matched = 'foo';
+
+                    return $value->toEqual('foo');
+                },
+            ]
+        )
+        ->toEqual($this->matched);
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('runs with falsy', function () {
+    expect('foo')
+        ->match(false, [
+                'bar' => function ($value) {
+                    $this->matched = 'bar';
+
+                    return $value->toEqual('bar');
+                },
+                false => function ($value) {
+                    $this->matched = 'foo';
+
+                    return $value->toEqual('foo');
+                },
+            ]
+        )
+        ->toEqual($this->matched);
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('runs with truthy closure condition', function () {
+    expect('foo')
+        ->match(
+            function () { return '1'; }, [
+                'bar' => function ($value) {
+                    $this->matched = 'bar';
+
+                    return $value->toEqual('bar');
+                },
+                true => function ($value) {
+                    $this->matched = 'foo';
+
+                    return $value->toEqual('foo');
+                },
+            ]
+        )
+        ->toEqual($this->matched);
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('runs with falsy closure condition', function () {
+    expect('foo')
+        ->match(
+            function () { return '0'; }, [
+                'bar' => function ($value) {
+                    $this->matched = 'bar';
+
+                    return $value->toEqual('bar');
+                },
+                false => function ($value) {
+                    $this->matched = 'foo';
+
+                    return $value->toEqual('foo');
+                },
+            ]
+        )
+        ->toEqual($this->matched);
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('can be passed non-callable values', function () {
+    expect('foo')
+        ->match('pest', [
+                'bar'  => 'foo',
+                'pest' => 'baz',
+            ]
+        );
+})->throws(ExpectationFailedException::class, 'two strings are equal');
+
+it('fails with unhandled match', function () {
+    expect('foo')->match('bar', []);
+})->throws(ExpectationFailedException::class, 'Unhandled match value.');
+
+it('can be used in higher order tests')
+    ->expect(true)
+    ->match(
+        function () { return true; }, [
+            false => function ($value) {
+                return $value->toBeFalse();
+            },
+            true => function ($value) {
+                return $value->toBeTrue();
+            },
+        ]
+    );

tests/Features/Expect/sequence.php

@@ -1,5 +1,7 @@
 <?php
 
+use PHPUnit\Framework\ExpectationFailedException;
+
 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.');
@@ -26,16 +28,14 @@ test('loops back to the start if it runs out of sequence items', function () {
     expect(static::getCount())->toBe(16);
 });
 
-test('it works if the number of items in the iterable is smaller than the number of expectations', function () {
+test('fails if the number of iterable items is greater 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);
-});
+})->throws(ExpectationFailedException::class);
 
 test('it works with associative arrays', function () {
     expect(['foo' => 'bar', 'baz' => 'boom'])

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/Expect/unless.php

@@ -0,0 +1,101 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    $this->unlessObject = new stdClass();
+    $this->unlessObject->trueValue = true;
+    $this->unlessObject->foo = 'foo';
+});
+
+it('pass', function () {
+    expect('foo')
+        ->unless(
+            true,
+            function ($value) {
+                return $value->toEqual('bar');
+            }
+        )
+        ->toEqual('foo');
+
+    expect(static::getCount())->toBe(1);
+});
+
+it('failures', function () {
+    expect('foo')
+        ->unless(
+            false,
+            function ($value) {
+                return $value->toBeTrue();
+            }
+        )
+        ->toEqual('foo');
+})->throws(ExpectationFailedException::class, 'is true');
+
+it('runs with truthy', function () {
+    expect($this->unlessObject)
+        ->unless(
+            0,
+            function ($value) {
+                return $value->trueValue->toBeTrue();
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('skips with falsy', function () {
+    expect($this->unlessObject)
+        ->unless(
+            1,
+            function ($value) {
+                return $value->trueValue->toBeFalse(); // fails
+            }
+        )
+        ->unless(
+            true,
+            function ($value) {
+                return $value->trueValue->toBeFalse(); // fails
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(1);
+});
+
+it('runs with truthy closure condition', function () {
+    expect($this->unlessObject)
+        ->unless(
+            function () { return '0'; },
+            function ($value) {
+                return $value->trueValue->toBeTrue();
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('skips with falsy closure condition', function () {
+    expect($this->unlessObject)
+        ->unless(
+            function () { return '1'; },
+            function ($value) {
+                return $value->trueValue->toBeFalse(); // fails
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(1);
+});
+
+it('can be used in higher order tests')
+    ->expect(true)
+    ->unless(
+        function () { return false; },
+        function ($value) {
+            return $value->toBeFalse();
+        }
+    )
+    ->throws(ExpectationFailedException::class, 'true is false');

tests/Features/Expect/when.php

@@ -0,0 +1,101 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+beforeEach(function () {
+    $this->whenObject = new stdClass();
+    $this->whenObject->trueValue = true;
+    $this->whenObject->foo = 'foo';
+});
+
+it('pass', function () {
+    expect('foo')
+        ->when(
+            true,
+            function ($value) {
+                return $value->toEqual('foo');
+            }
+        )
+        ->toEqual('foo');
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('failures', function () {
+    expect('foo')
+        ->when(
+            true,
+            function ($value) {
+                return $value->toBeTrue();
+            }
+        )
+        ->toEqual('foo');
+})->throws(ExpectationFailedException::class, 'is true');
+
+it('runs with truthy', function () {
+    expect($this->whenObject)
+        ->when(
+            1,
+            function ($value) {
+                return $value->trueValue->toBeTrue();
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('skips with falsy', function () {
+    expect($this->whenObject)
+        ->when(
+            0,
+            function ($value) {
+                return $value->trueValue->toBeFalse(); // fails
+            }
+        )
+        ->when(
+            false,
+            function ($value) {
+                return $value->trueValue->toBeFalse(); // fails
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(1);
+});
+
+it('runs with truthy closure condition', function () {
+    expect($this->whenObject)
+        ->when(
+            function () { return '1'; },
+            function ($value) {
+                return $value->trueValue->toBeTrue();
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(2);
+});
+
+it('skips with falsy closure condition', function () {
+    expect($this->whenObject)
+        ->when(
+            function () { return '0'; },
+            function ($value) {
+                return $value->trueValue->toBeFalse(); // fails
+            }
+        )
+        ->foo->toEqual('foo');
+
+    expect(static::getCount())->toBe(1);
+});
+
+it('can be used in higher order tests')
+    ->expect(false)
+    ->when(
+        function () { return true; },
+        function ($value) {
+            return $value->toBeTrue();
+        }
+    )
+    ->throws(ExpectationFailedException::class, 'false is true');

tests/Unit/Plugins/Environment.php

@@ -0,0 +1,23 @@
+<?php
+
+use Pest\Plugins\Environment;
+
+test('environment is set to CI when --ci option is used', function () {
+    $previousName = Environment::name();
+
+    $plugin = new Environment();
+
+    $plugin->handleArguments(['foo', '--ci', 'bar']);
+
+    expect(Environment::name())->toBe(Environment::CI);
+
+    Environment::name($previousName);
+});
+
+test('environment is set to Local when --ci option is not used', function () {
+    $plugin = new Environment();
+
+    $plugin->handleArguments(['foo', 'bar', 'baz']);
+
+    expect(Environment::name())->toBe(Environment::LOCAL);
+});

tests/Unit/TestSuite.php

@@ -2,13 +2,15 @@
 
 use Pest\Exceptions\DatasetMissing;
 use Pest\Exceptions\TestAlreadyExist;
+use Pest\Factories\TestCaseFactory;
+use Pest\Plugins\Environment;
 use Pest\TestSuite;
 
 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));
-    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test));
+    $testSuite->tests->set(new TestCaseFactory(__FILE__, 'foo', $test));
+    $testSuite->tests->set(new TestCaseFactory(__FILE__, 'foo', $test));
 })->throws(
     TestAlreadyExist::class,
     sprintf('A test with the description `%s` already exist in the filename `%s`.', 'foo', __FILE__),
@@ -17,17 +19,17 @@ it('does not allow to add the same test description twice', function () {
 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));
+    $testSuite->tests->set(new 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');
+    $testSuite = TestSuite::getInstance(getcwd(), 'tests');
     $test = function () {};
-    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'foo', $test));
-    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory(__FILE__, 'bar', $test));
+    $testSuite->tests->set(new TestCaseFactory(__FILE__, 'foo', $test));
+    $testSuite->tests->set(new TestCaseFactory(__FILE__, 'bar', $test));
 
     expect($testSuite->tests->getFilenames())->toEqual([
         __FILE__,
@@ -39,13 +41,34 @@ 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 = new TestCaseFactory(__FILE__, 'foo', $test);
     $testWithOnly->only = true;
     $testSuite->tests->set($testWithOnly);
 
-    $testSuite->tests->set(new \Pest\Factories\TestCaseFactory('Baz/Bar/Boo.php', 'bar', $test));
+    $testSuite->tests->set(new TestCaseFactory('Baz/Bar/Boo.php', 'bar', $test));
 
     expect($testSuite->tests->getFilenames())->toEqual([
         __FILE__,
     ]);
 });
+
+it('does not filter the test suite filenames to those with the only method when working in CI pipeline', function () {
+    $previousEnvironment = Environment::name();
+    Environment::name(Environment::CI);
+    $testSuite = TestSuite::getInstance(getcwd(), 'tests');
+
+    $test = function () {};
+
+    $testWithOnly = new TestCaseFactory(__FILE__, 'foo', $test);
+    $testWithOnly->only = true;
+    $testSuite->tests->set($testWithOnly);
+
+    $testSuite->tests->set(new TestCaseFactory('Baz/Bar/Boo.php', 'bar', $test));
+
+    expect($testSuite->tests->getFilenames())->toEqual([
+        __FILE__,
+        'Baz/Bar/Boo.php',
+    ]);
+
+    Environment::name($previousEnvironment);
+});