Bug
1619836 Part 3: Make the test browser_layoutHelpers_getBoxQuads2.js more informative and forgiving. r=hiro
This patch makes several improvements to the test:
1) It forces the test to run in Fission window. Primarily, this helps the
test generate precise CSS pixel results. For some reason, those are less
reliable in non-Fission windows. Secondarily, this API only exists to
support a fission-enabled browser, so it is a better match for its intended
usage.
2) It uses isfuzzy with an epsilon of 1 to compensate for any sub-pixel
imprecision.
3) It checks all four sides of each quad; not just the origin.
Differential Revision: https://phabricator.services.mozilla.com/D65411
--HG--
extra : moz-landing-system : lando