Tests: Add unit tests for timer_float()

[shail-mehta]

What

See Trac Ticket: #65819.

Adds unit tests for timer_float().

Why

This helper had no dedicated coverage.

How

Covers float elapsed time from REQUEST_TIME_FLOAT and that successive calls increase.

Testing

• npm run test:php -- --filter Tests_Load_TimerFloat
• npm run test:php -- --filter Tests_Load_TimerFloat --order-by=random
• vendor/bin/phpcs tests/phpunit/tests/load/timerFloat.php

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[Copilot]

🟡 Changes recommended

The assertions accept absolute timestamps, leaving the elapsed-time subtraction unverified.

1 open issue

• Tests do not verify timer_float subtracts the request start time · New

What changed in this PR

Adds dedicated PHPUnit coverage for WordPress’s timer_float() helper, addressing Trac #65819.

Changes:

• Tests the elapsed-time return value and increase between calls.
• Preserves and restores REQUEST_TIME_FLOAT between tests.

File	Description
tests/​phpunit/​tests/​load/​load/​timerFloat.php	Adds two timer tests and request-time cleanup.

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

The focused tests cover the intended behavior, restore shared state, and have no identified blocking issues.

No open issues 🎉

1 resolved since last review

• Tests do not verify timer_float subtracts the request start time

_{Review effort: Balanced}

[github-actions]

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Props shailu25, mukesh27.

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[mukeshpanchal27]

The tests look correct. One problem with the file location.

[mukeshpanchal27]

The path has load twice: tests/phpunit/tests/load/load/timerFloat.php. Could the file move to tests/phpunit/tests/load/timerFloat.php, next to the other load.php tests?

[shail-mehta]

Moved in test file in load folder.

[Copilot]

🟢 Approval recommended

Static review found no blocking issues in these focused tests; tests were not executed.

No open issues 🎉

_{Review effort: Balanced}