t808: add autoload-order regression tests for mpdf PSR HTTP message shim

[superdav42]

Summary

• Adds MpdfPsrHttpMessageShim_Test (42 tests / 85 assertions) covering all four shim classes: Request, Response, Stream, Uri
• Verifies via reflection that each public PSR-7 method has an explicit return type declaration — the absence of which causes PHP fatals when psr/http-message v2 is autoloaded before the shim
• Verifies instantiation behaviour (getMethod() → string, getStatusCode() → int, getSize() → ?int, getPort() → ?int)

Context

PR #782 added return type declarations to the mpdf shim via patches/mpdf-psr-http-message-shim-php8-compat.patch. Without those declarations, loading plugin-check (which bundles psr/http-message v2 with return types on interface methods) before the shim causes:

PHP Fatal error: Declaration of Mpdf\PsrHttpMessageShim\Request::getMethod() must be
compatible with Psr\Http\Message\RequestInterface::getMethod(): string

CodeRabbit flagged the absence of a regression test in its review of PR #782 (issue #808).

What was verified

WP_TESTS_DIR=/tmp/wordpress-tests-lib vendor/bin/phpunit --filter MpdfPsrHttpMessageShim_Test --no-coverage
# OK (42 tests, 85 assertions)

Patch was confirmed fully applied after composer reinstall mpdf/psr-http-message-shim (the vendor directory had stale state from the pre-#782 patch).

Files

• NEW: tests/WP_Ultimo/MpdfPsrHttpMessageShim_Test.php — 42 reflection + behavioural tests

Resolves #808

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 090ae046-f81a-4295-aad6-eb4fae9ad2ac

📥 Commits

Reviewing files that changed from the base of the PR and between 61a0a35 and 0af5c5a.

📒 Files selected for processing (1)

• tests/WP_Ultimo/MpdfPsrHttpMessageShim_Test.php

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/808-mpdf-shim-autoload-regression

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[github-actions]

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[superdav42]

Completion Summary

• What: Added MpdfPsrHttpMessageShim_Test (42 tests / 85 assertions) verifying all four mpdf PSR-7 shim classes have correct return type declarations — prevents regression of the PHP fatal fixed in PR fix: mpdf psr-http-message-shim v2 compatibility #782
• Issue: Review followup: PR #782 — fix: mpdf psr-http-message-shim v2 compatibility #808
• Files changed: tests/WP_Ultimo/MpdfPsrHttpMessageShim_Test.php (new file)
• Testing: 42 tests, 85 assertions; reflection-based checks that public PSR-7 methods have explicit return types; low risk — test-only addition
• Key decisions: Uses reflection rather than catching live fatals; covers all four shim classes (Request, Response, Stream, Uri)

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aidevops.sh v3.8.6 plugin for OpenCode v1.3.16 with claude-sonnet-4-6 spent 2m and ~8,000 tokens on this as a headless worker.

[superdav42]

Completion Summary

• What: Added MpdfPsrHttpMessageShim_Test (42 tests / 85 assertions) verifying all four mpdf PSR-7 shim classes have correct return type declarations — prevents regression of the PHP fatal fixed in PR fix: mpdf psr-http-message-shim v2 compatibility #782
• Issue: Review followup: PR #782 — fix: mpdf psr-http-message-shim v2 compatibility #808
• Files changed: tests/WP_Ultimo/MpdfPsrHttpMessageShim_Test.php (new file)
• Testing: 42 tests, 85 assertions; reflection-based checks that public PSR-7 methods have explicit return types; low risk — test-only addition
• Key decisions: Uses reflection rather than catching live fatals; covers all four shim classes (Request, Response, Stream, Uri)

---

aidevops.sh v3.8.6 plugin for OpenCode v1.3.16 with claude-sonnet-4-6 spent 2m and ~8,000 tokens on this as a headless worker.

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Merged via PR #818 to main.
Merged by deterministic merge pass (pulse-wrapper.sh).

[github-actions]

Performance Test Results

Performance test results for df145d3 are in 🛎️!

Note: the numbers in parentheses show the difference to the previous (baseline) test run. Differences below 2% or 0.5 in absolute values are not shown.

URL: /

Run	DB Queries	Memory	Before Template	Template	WP Total	LCP	TTFB	LCP - TTFB
0	40 (+2 / +4% )	37.73 MB	869.00 ms (+50.00 ms / +6% )	158.50 ms (-5.50 ms / -3% )	1058.00 ms (+58.50 ms / +6% )	2036.00 ms (+80.00 ms / +4% )	1951.40 ms (+80.20 ms / +4% )	93.75 ms (+3.95 ms / +4% )
1	56	49.02 MB	959.00 ms (-20.00 ms / -2% )	152.50 ms	1107.00 ms (-26.00 ms / -2% )	2078.00 ms (-76.00 ms / -4% )	1995.90 ms (-75.35 ms / -4% )	82.95 ms