Migrate PHPUnit test infrastructure to yoast/wp-test-utils #737
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The existing test setup relied on yoast/phpunit-polyfills, which provides polyfills for PHPUnit functionality but lacks the WordPress-specific test utilities that modern WordPress plugin testing requires. This migration adopts yoast/wp-test-utils, following the established pattern from the edit-flow plugin, to gain better WordPress integration testing capabilities and more robust test isolation. Key improvements: - Conditional WordPress loading based on test suite selection, allowing for future unit tests that don't require the full WordPress environment - Proper namespace support throughout the test suite under Automattic\Liveblog\Tests\Integration - PSR-4 compliant file naming and class structure - Modern PHP syntax with strict types declaration - Better test isolation through Yoast's TestCase implementation This change maintains full test coverage whilst establishing a more maintainable and extensible testing foundation for future development. All 67 tests continue to pass in both single-site and multisite modes.
This was referenced Dec 1, 2025
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Summary
Migrates the PHPUnit testing setup from
yoast/phpunit-polyfillstoyoast/wp-test-utils, following the pattern established in the edit-flow plugin (PR Automattic/edit-flow#796).This unblocks PR #721 (PHPUnit 11 upgrade from Dependabot).
Changes
yoast/phpunit-polyfillswithyoast/wp-test-utils ^1.2, rename scripts totest:integrationconvention, addtestscript*Test.phpfiles in./tests/Integration/tests/Integration/*Test.php, namespace underAutomattic\Liveblog\Tests\Integration, extendYoast\WPTestUtils\WPIntegration\TestCase, adddeclare(strict_types=1)Test plan
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