8 [1/2]. Give every assertion something it can fail on (tests only)

[nikolaystrikhar]

What: closes the assertions in the notice-store, writer, provider and redirector suites that pass whether or not the behaviour they name still exists, and re-arms WordPress's unexpected-_doing_it_wrong() check that WithIncorrectUsage was giving away.

Usage: composer test:unit now runs the singlesite leg and then the multisite one, which is where deactivate_plugins(), manage_network_plugins and the site-option queue actually differ.

Why this way:

An absence needs a control. assertNotContains( $option, wp_load_alloptions() ) passes over an empty bundle and goes on passing for ever, so both queue tests now find an option written with autoload on first, out of a bundle re-read from the database.

The \z anchor is unreachable through an ordinary request URI, so the parse is stubbed. PHP's parse_url() rewrites a path's control bytes to _, which refuses edit.php\n for a different reason and hides the anchor entirely; that is a parser detail, not a promise, and \z is what holds if it changes.

The expectation is what the caller declared, not whatever arrived. Registering every report as expected disarmed WPTestCase on the first one a test wanted, so only this library's own reports are registered now.

Summary by CodeRabbit

• Documentation

  • Updated guidance for composer test:unit, including single-site and multisite test coverage.
  • Expanded testing guidance for negative assertions and unexpected reports.

• Bug Fixes

  • Improved redirect safety for query values and screen names containing line breaks.
  • Refined validation to distinguish expected library reports from unrelated errors.

• Tests

  • Added coverage for notice storage, service registration, and redirect edge cases.

[coderabbitai]

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📝 Walkthrough

Walkthrough

Changes

The PR updates composer test:unit to run singlesite and multisite suites. It refines test-harness reporting and adds coverage for redirect sanitization, notice autoloading, and provider bindings.

Test command and coverage

Layer / File(s)	Summary
Test command and guidance composer.json, AGENTS.md, tests/README.md	The unit test command runs singlesite and multisite suites. Documentation describes updated assertion practices.
Test harness report filtering tests/_support/Spy_Writer.php, tests/_support/Traits/WithIncorrectUsage.php, tests/README.md	The spy no longer records conflict or stranding notices. Incorrect-usage expectations accept only library-generated reports.
Redirector regression coverage tests/unit/Conflict/RedirectorTest.php	Tests cover CRLF removal in nested query values and rejection of screen names with trailing newlines.
Notice autoloading tests tests/unit/Notices/StoreTest.php, tests/unit/Notices/WriterTest.php	Tests verify an autoloaded control option after cache reload before asserting that the notice queue is not autoloaded.
Provider binding tests tests/unit/ProviderTest.php	Tests cover the Rewriter binding and verify that the container contract resolves to the registered container instance.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: 🔵 Low · up to 6a624

This tests-only change strengthens behavior checks, but an unreverted global URL-parsing stub could affect later redirect tests and produce order-dependent results. The PR is mergeable with owner awareness and follow-up to isolate that test state.

🚥 Pre-merge checks | ✅ 5

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Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main purpose of the pull request: strengthening test assertions. The changes also update Composer commands and documentation, but the title appropriately focuses on th…
Docstring Coverage	✅ Passed	Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 21 functions across 6 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Explanation

The title clearly summarizes the main purpose of the pull request: strengthening test assertions. The changes also update Composer commands and documentation, but the title appropriately focuses on the primary testing work.

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[coderabbitai]

Actionable comments posted: 1

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Inline comments:
In `@tests/unit/Conflict/RedirectorTest.php`:
- Around line 141-147: Update RedirectorTest::tearDown() to restore the
wp_parse_url() stub installed by the test, ensuring cleanup occurs there rather
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• AGENTS.md
• composer.json
• tests/README.md
• tests/_support/Spy_Writer.php
• tests/_support/Traits/WithIncorrectUsage.php
• tests/unit/Conflict/RedirectorTest.php
• tests/unit/Notices/StoreTest.php
• tests/unit/Notices/WriterTest.php
• tests/unit/ProviderTest.php

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[d4mation]

We should probably add an inline comment here and in queue_stranding_notice() to make it clear that it is intentionally empty. It isn't 100% clear that that is the case reading the phpdoc and it could avoid phpcs issues in the future by putting something in the method body.

[nikolaystrikhar]

Done