1915499 - [wpt-sync] Sync PR 47850 - [wptrunner] Implement `--leak-check` for Blink-based browsers

Status: RESOLVED FIXED

(Testing :: web-platform-tests, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 47850 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/47850
Details from upstream follow.

Jonathan Lee <[e-mail]> wrote:

[wptrunner] Implement --leak-check for Blink-based browsers

... to support Chromium CI testing needs.

• Introduce LeakProtocolPart, an optional API that lets wptrunner check for leaks programmatically. The default implementation checks that navigating to about:blank after a test cleans up the DOM objects it created.
• For browsers that implement LeakProtocolPart, the base WebDriver executors run the leak check after each test and report the results as an extra test result field named leak_counters.
• Currently, the only implementers of LeakProtocolPart are ChromeDriver-based browsers, which use a nonstandard Chrome DevTools Protocol method to count DOM objects. For those browsers, a leak is coerced to CRASH to report the result appropriately and induce a browser restart.

See Also: https://crbug.com/40887057

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=5aa1fea75ef156303f924ae9a6f7d9e337e3d0ce

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a91a69df86fd
[wpt PR 47850] - [wptrunner] Implement `--leak-check` for Blink-based browsers, a=testonly

Comment 3

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Test result changes from PR not available.

Comment 4

[Atila Butkovits]

https://hg.mozilla.org/mozilla-central/rev/a91a69df86fd