[webkit-dev] DRT/WTR should clear the cache at the beginning of each test?
ojan at chromium.org
Wed Aug 8 10:47:32 PDT 2012
and media/video-poster-blocked-by-willsendrequest.html are flaky on all
platforms because they behave differently if the loaded resource is cached.
Every time I've taken a stab at reducing test flakiness, I've come across
at least a few tests that pass when run as part of the test suite, but fail
when run by themselves (or in parallel) because they accidentally expect an
image or something to be in the cache.
I think it would make the tests more maintainable if we cleared the cache
before each test run. This is *not* before each page load though. So tests
that do multiple page loads will still test cross-navigation caching
While it's true that we could one-off fix each of these tests, it's usually
very time consuming to figure out that caching is the problem, that's
assuming anyone takes the time to look into why the test is flaky in the
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