release: v1.22.1

[1.x] Dynamic properties handling

.github/workflows/changelog.yml

@@ -2,12 +2,12 @@ name: Changelog
 
 on:
   push:
-    branches: [ master ]
+    branches: [ 1.x ]
     paths:
       - CHANGELOG.md
       - .github/workflows/changelog.yml
   pull_request:
-    branches: [ master ]
+    branches: [ 1.x ]
     paths:
       - CHANGELOG.md
 jobs:

.github/workflows/tests.yml

@@ -8,10 +8,20 @@ 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', '8.2']
         dependency-version: [prefer-lowest, prefer-stable]
+        parallel: ['', '--parallel']
+        exclude:
+          - php: 8.1
+            os: macos-latest
+          - php: 8.1
+            os: windows-latest
+          - php: 8.2
+            os: macos-latest
+          - php: 8.2
+            os: windows-latest
 
-    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 +39,11 @@ 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

CHANGELOG.md

@@ -4,6 +4,59 @@ 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/).
 
+## [v1.22.1 (2022-08-29)](https://github.com/pestphp/pest/compare/v1.22.0...v1.22.1)
+### Fixed
+- Initial PHP 8.2 support ([d050ef8](https://github.com/pestphp/pest/commit/d050ef8d54ffe8dfe015adeb1188aae2cca33c33))
+
+## [v1.22.0 (2022-08-28)](https://github.com/pestphp/pest/compare/v1.21.3...v1.22.0)
+### Added
+- Initial PHP 8.2 support ([#563](https://github.com/pestphp/pest/pull/563))
+
+## [v1.21.3 (2022-05-12)](https://github.com/pestphp/pest/compare/v1.21.2...v1.21.3)
+### Fixed
+- Debug of high order tests ([c1b32b9](https://github.com/pestphp/pest/commit/c1b32b9ffb5134803c490592454b11b8c05ea27d))
+
+## [v1.21.2 (2022-03-05)](https://github.com/pestphp/pest/compare/v1.21.1...v1.21.2)
+### Fixed
+- `toThrow` expectation when exception does not exist ([#487](https://github.com/pestphp/pest/pull/487))
+
+## [v1.21.1 (2021-11-25)](https://github.com/pestphp/pest/compare/v1.21.0...v1.21.1)
+### Fixed
+- sequence callables causing problems ([#442](https://github.com/pestphp/pest/pull/442))
+
+## [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))
+
 ## [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))

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

@@ -2,14 +2,15 @@
 
 When releasing a new version of Pest there are some checks and updates that need to be done:
 
-- Clear your local repository with: `git add . && git reset --hard && git checkout master` 
-- 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
+- Clear your local repository with: `git add . && git reset --hard && git checkout 1.x` 
+- On the GitHub repository, check the contents of [github.com/pestphp/pest/compare/{latest_version}...1.x](https://github.com/pestphp/pest/compare/{latest_version}...1.x) 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 "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`
+- Publish release here: [github.com/pestphp/pest/releases/new](https://github.com/pestphp/pest/releases/new).
 
 ### Plugins
 

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;
@@ -42,14 +42,22 @@ use Symfony\Component\Console\Output\OutputInterface;
 
     ValidatesEnvironment::in($testSuite);
 
+    $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

@@ -18,7 +18,7 @@
     ],
     "require": {
         "php": "^7.3 || ^8.0",
-        "nunomaduro/collision": "^5.4.0",
+        "nunomaduro/collision": "^5.10.0|^6.0",
         "pestphp/pest-plugin": "^1.0.0",
         "phpunit/phpunit": "^9.5.5"
     },
@@ -43,40 +43,47 @@
         "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,
     "config": {
         "sort-packages": true,
-        "preferred-install": "dist"
+        "preferred-install": "dist",
+        "allow-plugins": {
+            "pestphp/pest-plugin": true
+        }
     },
     "bin": [
         "bin/pest"
     ],
     "scripts": {
-        "lint": "php-cs-fixer fix -v",
-        "test:lint": "php-cs-fixer fix -v --dry-run",
+        "lint": "PHP_CS_FIXER_IGNORE_ENV=true php-cs-fixer fix -v",
+        "test:lint": "PHP_CS_FIXER_IGNORE_ENV=true php-cs-fixer fix -v --dry-run",
         "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"
         ]
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.x-dev"
+            "dev-1.x": "1.x-dev"
         },
         "pest": {
             "plugins": [
                 "Pest\\Plugins\\Coverage",
                 "Pest\\Plugins\\Init",
-                "Pest\\Plugins\\Version"
+                "Pest\\Plugins\\Version",
+                "Pest\\Plugins\\Environment"
             ]
         },
         "laravel": {

phpstan-baseline.neon

@@ -0,0 +1,287 @@
+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\\.$#"
+			count: 2
+			path: src/Expectation.php
+
+		-
+			message: "#^Parameter \\#2 \\$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/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/Actions/LoadStructure.php

@@ -5,7 +5,9 @@ declare(strict_types=1);
 namespace Pest\Actions;
 
 use Pest\Support\Str;
+
 use function Pest\testDirectory;
+
 use PHPUnit\Util\FileLoader;
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
@@ -50,6 +52,7 @@ final class LoadStructure
                 $directory = new RecursiveDirectoryIterator($filename);
                 $iterator  = new RecursiveIteratorIterator($directory);
                 foreach ($iterator as $file) {
+                    /* @phpstan-ignore-next-line */
                     $filename = $file->__toString();
                     if (Str::endsWith($filename, '.php') && file_exists($filename)) {
                         require_once $filename;

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/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 +5,20 @@ declare(strict_types=1);
 namespace Pest;
 
 use BadMethodCallException;
+use Closure;
+use Error;
+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 +109,6 @@ final class Expectation
     public function ray(...$arguments): self
     {
         if (function_exists('ray')) {
-            // @phpstan-ignore-next-line
             ray($this->value, ...$arguments);
         }
 
@@ -148,9 +154,10 @@ 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;
 
@@ -159,8 +166,12 @@ 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[$key])) {
+            if ($callbacks[$key] instanceof Closure) {
                 call_user_func($callbacks[$key], new self($item), new self($keys[$key]));
                 continue;
             }
@@ -171,6 +182,88 @@ 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 +414,36 @@ 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 +473,20 @@ 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 $this;
+    }
+
     /**
      * Asserts that two variables have the same value.
      *
@@ -586,7 +723,7 @@ final class Expectation
         try {
             Assert::assertTrue(Arr::has($array, $key));
 
-            /* @phpstan-ignore-next-line  */
+            /* @phpstan-ignore-next-line */
         } catch (ExpectationFailedException $exception) {
             throw new ExpectationFailedException("Failed asserting that an array has the key '$key'", $exception->getComparisonFailure());
         }
@@ -749,6 +886,60 @@ 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 $e) {
+            if (!class_exists($exception)) {
+                if ($e instanceof Error && (bool) preg_match("/Class [\"']{$exception}[\"'] not found/", $e->getMessage())) {
+                    throw $e;
+                }
+
+                Assert::assertStringContainsString($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

@@ -216,6 +216,7 @@ final class TestCaseFactory
             eval("
                 namespace $namespace;
 
+                #[\AllowDynamicProperties]
                 final class $className extends $baseClass implements $hasPrintableTestCaseClassFQN {
                     $traitsCode
 

src/Laravel/Commands/PestDatasetCommand.php

@@ -8,7 +8,9 @@ use Illuminate\Console\Command;
 use Illuminate\Support\Facades\File;
 use Illuminate\Support\Str;
 use Pest\Exceptions\InvalidConsoleArgument;
+
 use function Pest\testDirectory;
+
 use Pest\TestSuite;
 
 /**

src/Laravel/Commands/PestInstallCommand.php

@@ -8,7 +8,9 @@ use Illuminate\Console\Command;
 use Illuminate\Support\Facades\File;
 use Pest\Console\Thanks;
 use Pest\Exceptions\InvalidConsoleArgument;
+
 use function Pest\testDirectory;
+
 use Pest\TestSuite;
 
 /**

src/Laravel/Commands/PestTestCommand.php

@@ -8,7 +8,9 @@ use Illuminate\Console\Command;
 use Illuminate\Support\Facades\File;
 use Pest\Exceptions\InvalidConsoleArgument;
 use Pest\Support\Str;
+
 use function Pest\testDirectory;
+
 use Pest\TestSuite;
 
 /**

src/Logging/JUnit.php

@@ -13,11 +13,14 @@ declare(strict_types=1);
 namespace Pest\Logging;
 
 use function class_exists;
+
 use DOMDocument;
 use DOMElement;
 use Exception;
+
 use function get_class;
 use function method_exists;
+
 use Pest\Concerns\Testable;
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\ExceptionWrapper;
@@ -32,9 +35,12 @@ use PHPUnit\Util\Printer;
 use PHPUnit\Util\Xml;
 use ReflectionClass;
 use ReflectionException;
+
 use function sprintf;
 use function str_replace;
+
 use Throwable;
+
 use function trim;
 
 /**
@@ -173,7 +179,6 @@ final class JUnit extends Printer implements TestListener
         $this->doAddSkipped();
     }
 
-    /** @phpstan-ignore-next-line */
     public function startTestSuite(TestSuite $suite): void
     {
         $testSuite = $this->document->createElement('testsuite');
@@ -212,7 +217,6 @@ final class JUnit extends Printer implements TestListener
         $this->testSuiteTimes[$this->testSuiteLevel]      = 0;
     }
 
-    /** @phpstan-ignore-next-line */
     public function endTestSuite(TestSuite $suite): void
     {
         $this->testSuites[$this->testSuiteLevel]->setAttribute(
@@ -283,7 +287,6 @@ 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/Logging/TeamCity.php

@@ -5,10 +5,13 @@ 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;
@@ -16,9 +19,11 @@ 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
@@ -106,7 +111,6 @@ final class TeamCity extends DefaultResultPrinter
             - $result->riskyCount();
     }
 
-    /** @phpstan-ignore-next-line */
     public function startTestSuite(TestSuite $suite): void
     {
         $suiteName = $suite->getName();
@@ -164,7 +168,6 @@ final class TeamCity extends DefaultResultPrinter
         );
     }
 
-    /** @phpstan-ignore-next-line */
     public function endTestSuite(TestSuite $suite): void
     {
         $suiteName = $suite->getName();
@@ -286,7 +289,7 @@ final class TeamCity extends DefaultResultPrinter
     {
         $this->markAsFailure($t);
         $this->writeWarning($test->getName());
-        $this->phpunitTeamCity->addSkippedTest($test, $t, $time);
+        $this->phpunitTeamCity->printIgnoredTest($test->getName(), $t, $time);
     }
 
     private function markAsFailure(Throwable $t): void

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;
             };
 
@@ -163,7 +183,7 @@ final class TestCall
      */
     public function __get(string $name): self
     {
-        return $this->addChain($name);
+        return $this->addChain(Backtrace::file(), Backtrace::line(), $name);
     }
 
     /**
@@ -173,7 +193,7 @@ final class TestCall
      */
     public function __call(string $name, array $arguments): self
     {
-        return $this->addChain($name, $arguments);
+        return $this->addChain(Backtrace::file(), Backtrace::line(), $name, $arguments);
     }
 
     /**
@@ -181,11 +201,11 @@ final class TestCall
      *
      * @param array<int, mixed>|null $arguments
      */
-    private function addChain(string $name, array $arguments = null): self
+    private function addChain(string $file, int $line, string $name, array $arguments = null): self
     {
         $this->testCaseFactory
             ->chains
-            ->add(Backtrace::file(), Backtrace::line(), $name, $arguments);
+            ->add($file, $line, $name, $arguments);
 
         if ($this->descriptionLess) {
             $exporter = new Exporter();

src/Pest.php

@@ -6,7 +6,7 @@ namespace Pest;
 
 function version(): string
 {
-    return '1.15.0';
+    return '1.22.1';
 }
 
 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/Plugins/Version.php

@@ -5,7 +5,9 @@ declare(strict_types=1);
 namespace Pest\Plugins;
 
 use Pest\Contracts\Plugins\HandlesArguments;
+
 use function Pest\version;
+
 use Symfony\Component\Console\Output\OutputInterface;
 
 /**

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 = '>>>';
 
@@ -44,6 +45,20 @@ 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.
      */
@@ -85,9 +100,7 @@ final class TestRepository
             }
         }
 
-        $onlyState = array_filter($this->state, function ($testFactory): bool {
-            return $testFactory->only;
-        });
+        $onlyState = $this->testsUsingOnly();
 
         $state = count($onlyState) > 0 ? $onlyState : $this->state;
 
@@ -100,6 +113,22 @@ final class TestRepository
         }
     }
 
+    /**
+     * Return all tests that have called the only method.
+     *
+     * @return array<TestCaseFactory>
+     */
+    private function testsUsingOnly(): array
+    {
+        if (Environment::name() === Environment::CI) {
+            return [];
+        }
+
+        return array_filter($this->state, function ($testFactory): bool {
+            return $testFactory->only;
+        });
+    }
+
     /**
      * Uses the given `$testCaseClass` on the given `$paths`.
      *

src/Support/Backtrace.php

@@ -26,6 +26,7 @@ final class Backtrace
         $current = null;
 
         foreach (debug_backtrace(self::BACKTRACE_OPTIONS) as $trace) {
+            assert(array_key_exists(self::FILE, $trace));
             if (Str::endsWith($trace[self::FILE], (string) realpath('vendor/phpunit/phpunit/src/Util/FileLoader.php'))) {
                 break;
             }
@@ -45,7 +46,11 @@ final class Backtrace
      */
     public static function file(): string
     {
-        return debug_backtrace(self::BACKTRACE_OPTIONS)[1][self::FILE];
+        $trace = debug_backtrace(self::BACKTRACE_OPTIONS)[1];
+
+        assert(array_key_exists(self::FILE, $trace));
+
+        return $trace[self::FILE];
     }
 
     /**
@@ -53,7 +58,11 @@ final class Backtrace
      */
     public static function dirname(): string
     {
-        return dirname(debug_backtrace(self::BACKTRACE_OPTIONS)[1][self::FILE]);
+        $trace = debug_backtrace(self::BACKTRACE_OPTIONS)[1];
+
+        assert(array_key_exists(self::FILE, $trace));
+
+        return dirname($trace[self::FILE]);
     }
 
     /**
@@ -61,6 +70,10 @@ final class Backtrace
      */
     public static function line(): int
     {
-        return debug_backtrace(self::BACKTRACE_OPTIONS)[1]['line'];
+        $trace = debug_backtrace(self::BACKTRACE_OPTIONS)[1];
+
+        assert(array_key_exists('line', $trace));
+
+        return $trace['line'];
     }
 }

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/Support/ExceptionTrace.php

@@ -44,6 +44,7 @@ final class ExceptionTrace
      */
     public static function removePestReferences(Throwable $t): void
     {
+        /* @phpstan-ignore-next-line */
         if (!property_exists($t, 'serializableTrace')) {
             return;
         }

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 +484,39 @@
   ✓ 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
+  ✓ it can handle a non-defined exception
+  ✓ it can handle a class not found Error
+
+   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 +659,10 @@
   ✓ 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
@@ -614,6 +686,9 @@
    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
+  ✓ 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
@@ -647,5 +722,5 @@
   ✓ it is a test
   ✓ it uses correct parent class
 
-  Tests:  4 incompleted, 9 skipped, 419 passed
+  Tests:  4 incompleted, 9 skipped, 480 passed
   

tests/Features/Coverage.php

@@ -8,7 +8,7 @@ use Symfony\Component\Console\Output\ConsoleOutput;
 it('has plugin')->assertTrue(class_exists(CoveragePlugin::class));
 
 it('adds coverage if --coverage exist', function () {
-    $plugin = new CoveragePlugin(new ConsoleOutput());
+    $plugin    = new CoveragePlugin(new ConsoleOutput());
     $testSuite = TestSuite::getInstance();
 
     expect($plugin->coverage)->toBeFalse();

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.');
@@ -7,9 +9,15 @@ test('an exception is thrown if the the type is not iterable', function () {
 test('allows for sequences of checks to be run on iterable data', function () {
     expect([1, 2, 3])
         ->sequence(
-            function ($expectation) { $expectation->toBeInt()->toEqual(1); },
-            function ($expectation) { $expectation->toBeInt()->toEqual(2); },
-            function ($expectation) { $expectation->toBeInt()->toEqual(3); },
+            function ($expectation) {
+                $expectation->toBeInt()->toEqual(1);
+            },
+            function ($expectation) {
+                $expectation->toBeInt()->toEqual(2);
+            },
+            function ($expectation) {
+                $expectation->toBeInt()->toEqual(3);
+            },
         );
 
     expect(static::getCount())->toBe(6);
@@ -18,30 +26,46 @@ test('allows for sequences of checks to be run on iterable data', function () {
 test('loops back to the start if it runs out of sequence items', function () {
     expect([1, 2, 3, 1, 2, 3, 1, 2])
         ->sequence(
-            function ($expectation) { $expectation->toBeInt()->toEqual(1); },
-            function ($expectation) { $expectation->toBeInt()->toEqual(2); },
-            function ($expectation) { $expectation->toBeInt()->toEqual(3); },
+            function ($expectation) {
+                $expectation->toBeInt()->toEqual(1);
+            },
+            function ($expectation) {
+                $expectation->toBeInt()->toEqual(2);
+            },
+            function ($expectation) {
+                $expectation->toBeInt()->toEqual(3);
+            },
         );
 
     expect(static::getCount())->toBe(16);
 });
 
-test('it works if the number of items in the iterable is smaller than the number of expectations', function () {
+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) { $expectation->toBeInt()->toEqual(3); },
+            function ($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'])
         ->sequence(
-            function ($expectation, $key) { $expectation->toEqual('bar'); $key->toEqual('foo'); },
-            function ($expectation, $key) { $expectation->toEqual('boom'); $key->toEqual('baz'); },
+            function ($expectation, $key) {
+                $expectation->toEqual('bar');
+                $key->toEqual('foo');
+            },
+            function ($expectation, $key) {
+                $expectation->toEqual('boom');
+                $key->toEqual('baz');
+            },
         );
 });
 
@@ -54,7 +78,9 @@ test('it can be passed non-callable values', function () {
 test('it can be passed a mixture of value types', function () {
     expect(['foo', 'bar', 'baz'])->sequence(
         'foo',
-        function ($expectation) { $expectation->toEqual('bar')->toBeString(); },
+        function ($expectation) {
+            $expectation->toEqual('bar')->toBeString();
+        },
         'baz'
     );
 

tests/Features/Expect/toBe.php

@@ -5,7 +5,7 @@ use PHPUnit\Framework\ExpectationFailedException;
 expect(true)->toBeTrue()->and(false)->toBeFalse();
 
 test('strict comparisons', function () {
-    $nuno = new stdClass();
+    $nuno  = new stdClass();
     $dries = new stdClass();
 
     expect($nuno)->toBe($nuno)->not->toBe($dries);

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 +1,72 @@
+<?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.');
+
+it('can handle a non-defined exception', function () {
+    expect(function () {
+        throw new NonExistingException();
+    })->toThrow(NonExistingException::class);
+})->throws(Error::class);
+
+it('can handle a class not found Error', function () {
+    expect(function () {
+        throw new NonExistingException();
+    })->toThrow(Error::class);
+});

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/Hooks/BeforeAllTest.php

@@ -7,7 +7,7 @@ global $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__, $args[1]);
+$single = (isset($args[1]) && Str::endsWith(__FILE__, $args[1])) || ($_SERVER['PEST_PARALLEL'] ?? false);
 $offset = $single ? 0 : 2;
 
 uses()->beforeAll(function () use ($globalHook, $offset) {

tests/PHPUnit/CustomTestCase/CustomTestCase.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Tests\CustomTestCase;
 
 use function PHPUnit\Framework\assertTrue;
+
 use PHPUnit\Framework\TestCase;
 
 class CustomTestCase extends TestCase

tests/PHPUnit/CustomTestCase/ExecutedTest.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Tests\CustomTestCase;
 
 use function PHPUnit\Framework\assertTrue;
+
 use PHPUnit\Framework\TestCase;
 
 class ExecutedTest extends TestCase

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

@@ -1,5 +1,9 @@
 <?php
 
+use Tests\CustomTestCaseInSubFolders\SubFolder\SubFolder\CustomTestCaseInSubFolder;
+
+uses(CustomTestCaseInSubFolder::class)->in('PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder');
+
 uses()->group('integration')->in('Visual');
 
 // NOTE: global test value container to be mutated and checked across files, as needed

tests/Unit/Actions/AddsTests.php

@@ -23,7 +23,7 @@ test('default php unit tests', function () {
 });
 
 it('removes warnings', function () {
-    $testSuite = new TestSuite();
+    $testSuite       = new TestSuite();
     $warningTestCase = new WarningTestCase('No tests found in class "Pest\TestCase".');
     $testSuite->addTest($warningTestCase);
 

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/Plugins/Version.php

@@ -1,7 +1,9 @@
 <?php
 
 use Pest\Plugins\Version;
+
 use function Pest\version;
+
 use Symfony\Component\Console\Output\BufferedOutput;
 
 it('outputs the version when --version is used', function () {

tests/Unit/Support/Reflection.php

@@ -10,7 +10,7 @@ it('gets file name from closure', function () {
 });
 
 it('gets property values', function () {
-    $class = new class() {
+    $class           = new class() {
         private $foo = 'bar';
     };
 

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));
+    $test      = function () {};
+    $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__),
@@ -16,9 +18,57 @@ 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));
+    $test      = function (int $arg) {};
+    $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 = TestSuite::getInstance(getcwd(), 'tests');
+    $test      = function () {};
+    $testSuite->tests->set(new TestCaseFactory(__FILE__, 'foo', $test));
+    $testSuite->tests->set(new 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 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__,
+    ]);
+});
+
+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);
+});

tests/Visual/Help.php

@@ -8,7 +8,7 @@ test('visual snapshot of help command output', function () {
 
     if (getenv('REBUILD_SNAPSHOTS')) {
         $outputBuffer = new BufferedOutput();
-        $plugin = new Help($outputBuffer);
+        $plugin       = new Help($outputBuffer);
 
         $plugin();
 

tests/Visual/Success.php

@@ -2,14 +2,14 @@
 
 test('visual snapshot of test suite on success', function () {
     $testsPath = dirname(__DIR__);
-    $snapshot = implode(DIRECTORY_SEPARATOR, [
+    $snapshot  = implode(DIRECTORY_SEPARATOR, [
         $testsPath,
         '.snapshots',
         'success.txt',
     ]);
 
     $output = function () use ($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();