[wpt] Migrate custom-elements/ coverage to headless shell

See [0] and [1] for background. The test history [2] and CQ flakiness check suggest the tests consistently run as expected on the new runner and embedder. `ElementInternals-role.html` is marked as slow because each testdriver call is now implemented as several WebDriver requests; collectively, executing testdriver takes (~0.1s / call) * O(100 calls) = O(10s), which easily exceeds the test timeout. (The timeout doesn't appear on wpt.fyi because the results are generated from an official build, which is heavily optimized.) [0]: https://groups.google.com/a/chromium.org/g/blink-dev/c/JOu9l2hu1U8 [1]: https://chromium.googlesource.com/chromium/src/+/HEAD/docs/testing/run_web_platform_tests.md [2]: https://ci.chromium.org/ui/p/chromium/test-search?q=headless_shell_wpt%2Fexternal%2Fwpt%2Fcustom-elements%2F Bug: 40927590 Change-Id: I51107cc657fb859eb5bc682101c416f065dc2e3e Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6020549 Reviewed-by: Joey Arhar <[email protected]> Commit-Queue: Joey Arhar <[email protected]> Auto-Submit: Jonathan Lee <[email protected]> Cr-Commit-Position: refs/heads/main@{#1383210}
web-platform-tests · Nov 14, 2024 · 498f2cd · 498f2cd
1 parent 5f41a87
commit 498f2cd
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/custom-elements/ElementInternals-role.html b/custom-elements/ElementInternals-role.html
@@ -1,4 +1,7 @@
 <!DOCTYPE HTML>
+<!-- This test makes hundreds of sequential testdriver calls,
+     which can take a long time in non-optimized builds. -->
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>