Manual:PHP unit testing

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IntroductionEdit

We do unit and integration testing of MediaWiki's PHP code base using the PHPUnit framework. View MediaWiki core's test coverage.

MediaWiki core's PHP unit and integration tests are in the tests/phpunit directory. When adding new tests, unit tests should be placed in tests/phpunit/unit and integration tests should be placed in tests/phpunit/integration The directory structure roughly matches that of the code being tested. For example: you can find the unit tests for file includes/libs/JavaScriptMinifier.php in tests/phpunit/unit/includes/libs/JavaScriptMinifierTest.php.

Extensions should have PHPUnit tests in a tests/phpunit subdirectory, using subdirectories to separate unit and integration tests, e.g. extensions/{extensionName}/tests/phpunit/unit and extensions/{extensionName}/tests/phpunit/integration.

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