On 15/06/17 21:51, Ben Kelly wrote:
On Thu, Jun 15, 2017 at 4:37 PM, Nathan Froyd <nfr...@mozilla.com> wrote:
On Thu, Jun 15, 2017 at 2:02 PM, Brendan Dahl <bd...@mozilla.com> wrote:
Headless will run less of the platform specific widget code and I don't
recommend using it for platform specific testing. It is targeted more at
web developers and testing regular content pages. There definitely will
be
cases where regular pages will need to exercise code that would vary per
platform (such as fullscreen), but hopefully we can provide good enough
emulation in headless and work to have a consistent enough behavior
across
platforms that it won't matter.
Would it be feasible to use headless mode for mochitests (or reftests,
etc. etc.)? I know there are probably some mochitests which care
about the cases you mention above (e.g. fullscreen), but if that could
be taken care of in the headless code itself or we could annotate the
tests somehow, it would be a huge boon for running mochitests locally,
or even in parallel. (We already have some support for running
reftests/crashtests in parallel.)
There are some tests which fail if the "screen" is not a particular size.
Those might be a problem as well.
FWIW [1] is a try run of web-platform-tests in headless mode. There are
clearly some tests that are broken. If people thought it was high value
I could add a --headless command line argument with support for running
most tests in headless and specially annotated tests in a real window.
But it wouldn't be possible to keep that annotation data up to date
automatically with new imports, so it would be a best-effort solution.
[1]
https://treeherder.mozilla.org/#/jobs?repo=try&revision=e4282575210badf4ab3a072d5ceab51ee2384e11&filter-searchStr=linux
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