[iOS] LayoutTestRelay should ensure its DRT/WKTR dies when receiving kill/term signals

[David Farler]

If a test times out, webkitpy will kill the LayoutTestRelay. However, the signal isn't forwarded to the underlying DRT/WKTR. This used to not be a problem because when LayoutTestRelay gets launched with the same arguments, launching the same app identifier in the simulator would first quit the old instance. That's no longer the case and the same DRT/WKTR instance will be sitting there still timing out. So, we need to catch a signal and kill the simulator app before dying so that it can be properly relaunched when a timeout->kill happens.

[David Farler]

Created attachment 239661 [details]
Patch

[Simon Fraser (smfr)]

Comment on attachment 239661 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=239661&action=review

> Tools/LayoutTestRelay/LayoutTestRelay/main.m:103
> +    NSLog(@"FINISHING");

I don't think you want this.

> Tools/Scripts/webkitpy/common/system/executive.py:202
> +                os.kill(pid, signal.SIGTERM)

This needs a comment I think.

[David Farler]

Committed r174628: <http://trac.webkit.org/changeset/174628>

[Csaba Osztrogonác]

(In reply to comment #3)
> Committed r174628: <http://trac.webkit.org/changeset/174628>

It broke the related webkitpy unittest. Could you update its expected result?

[Simon Fraser (smfr)]

This broke a python test.

[Simon Fraser (smfr)]

I fixed this in r174634.