Bug 1363428 - Add reftest-specific endpoints to Marionette, r=ato
This adds commands to start a reftest session, run a test, and end the
session. It as assumed that after you start a reftest session you will
just run reftests until you end the session. When starting a session
the user provides a string indicating when screenshots should be
taken, and an object mapping urls to a count of the number of times
that url is expected to be used in the session, to help with
caching. Running the tests takes a url to a test, an expected status,
a timeout, and a nested list of possible references, in which each
entry at a specific level is combined by OR and nested references are
combined by AND.
The implementation is heavilly inspired by the existing reftest
harness, starting a minimal window with no tabs, and loading the urls
directly in there. In order to get a screenshot in the e10s case we
have to pass the DRAW_VIEW and USE_WIDGET_LAYERS flags when taking the
screenshot.
For performance we heavily cache canvases; for references that will be
repeated we cache the full canvas with image, and we also cache a
single canvas to use for all other screenshots to avoid the overhead
of repeatedly creating a new canvas element.
MozReview-Commit-ID: JOFvtmH7tg
2017-05-10 09:51:10 +00:00
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<window id="reftest" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" onload="window.arguments[0]()"></window>
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