[rejaulalomkhan]

Description

In tests/phpunit/tests/post/getPostTypeLabels.php, register_post_type() is used across several test methods (test_labels_should_be_added_when_registering_a_post_type, test_label_should_be_derived_from_labels_when_registering_a_post_type, and test_should_fall_back_on_defaults_when_filtered_labels_do_not_contain_the_keys) to register a custom post type 'foo'.

While the tests attempt to unregister it inline, any assertion failure before reaching unregister_post_type() leaves 'foo' registered in the global $wp_post_types array, leaking state into subsequent test runs.

This PR adds a tear_down() method to Tests_Post_GetPostTypeLabels to reliably unregister 'foo' via unregister_post_type(), ensuring complete test isolation.

Trac ticket: https://core.trac.wordpress.org/ticket/65893

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This pull request modifies test files only.

Summary of Changes

• Added tear_down() method to Tests_Post_GetPostTypeLabels in tests/phpunit/tests/post/getPostTypeLabels.php unregistering 'foo'.

Test Coverage

• Verified locally via vendor/bin/phpunit --filter Tests_Post_GetPostTypeLabels (9 tests, 12 assertions: all passed).
• Ran PHPCS via vendor/bin/phpcs tests/phpunit/tests/post/getPostTypeLabels.php (0 errors, 0 warnings).

Use of AI Tools

• Tool: Antigravity
• Model: Gemini 2.5 Pro
• Scope: Identifying test isolation leaks in getPostTypeLabels.php and drafting teardown cleanup.

[github-actions]

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Props rejaulalomkhan.

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