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
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
--HG--
extra : rebase_source : ab5a2ef2e450b9bbdc6bc3c9487ed5dfda2c1d4b
James Graham
Wes Kocher