[rejaulalomkhan]

Adds unit test coverage for the_modified_time() in src/wp-includes/general-template.php.

Test scenarios covered:

• Displaying post modified time in default format matching get_option( 'time_format' ).
• Respecting various custom date/time formats (H:i:s, g:i a, Y-m-d H:i, l, H, i) via @dataProvider.
• Respecting changes to the time_format option when no format argument is supplied.
• Outputting nothing when no global $post exists.
• The the_modified_time filter hook arguments verification (receives $get_the_modified_time and $format).
• Customizing displayed output via the the_modified_time filter hook.
• Respecting the underlying get_the_modified_time filter hook.

Verification:

• Single-site PHPUnit: OK (12 tests, 15 assertions)
• Multisite PHPUnit: OK (12 tests, 15 assertions)
• Randomized order PHPUnit: OK (12 tests, 15 assertions)
• Full date test group: OK (363 tests, 1286 assertions)
• PHPCS (WordPress-Core): Clean (0 errors, 0 warnings)
• Mutation testing: Verified 11 test failures when the echo statement is omitted.

Trac ticket: https://core.trac.wordpress.org/ticket/65819

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Use of AI Tools: Antigravity (Gemini 2.5) was used to assist in test case ideation, code scaffolding, and formatting to WordPress core standards. All assertions and test outcomes were verified locally through PHPUnit and PHPCS.

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[Copilot]

🟢 Approval recommended

The focused test additions match existing behavior and test-isolation mechanisms, with no blocking issues identified.

No open issues 🎉

What changed in this PR

Adds PHPUnit coverage for WordPress’s the_modified_time() template function without changing production code.

Changes:

• Tests default and custom formats, option changes, and missing global posts.
• Verifies filter arguments and filtered output.

File	Description
tests/​phpunit/​tests/​date/​theModifiedTime.php	Adds fixtures and tests for modified-time output and filters.

_{Review effort: Balanced}

[lancewillett]

The distinct creation and modification timestamps make the output checks meaningful. Optional cleanup: remove the computed-default expectation; the literal time-format option case already covers omitted-format behavior.

Unit-tests audit and Copilot review found no blockers. PHPCS passed all ten files. The combined batch passed locally in randomized order: single-site 149 tests / 283 assertions (seed 65825), multisite 140 tests / 236 assertions (seed 65826). CI is green on the reviewed commit.

_{AI review · gpt-6}

[lancewillett]

PR #14449 landed in https://core.trac.wordpress.org/changeset/64543