This will help fix an intermittent test failure as explained in bug
1142360 comment 301. It also has the additional benefit of making
things faster overall, since the reflows of the huge mochitest test
runner page every time the bidi.numeral pref changes are very expensive,
and such overhead doesn't exist in the reftest framework.
Note that this replaces the code that allows eroding the space with new
code that reduces the focusPadding value.
(Also, we previously didn't count the focusPadding towards what could be
eroded, which meant we wouldn't quite get to the edge of the padding and
border, because we weren't counting the extra for the focusPadding.)
The existing reftests that I'm changing from == to != are ones that were
specifically testing issues related to erosion of padding.
The change to 491180-{1,2}-ref.html is because we now *do* erode the
focusPadding, which is 3px in the horizontal dimensions (see the
button::-moz-focus-inner styles in forms.css), and that was the only
nonzero style on the button in 491180-{1,2}.html.
CLOSED TREE (per RyanVM)
The added test only tests the position of ruby text and ruby text container. The position of text inside is not correct yet, which will be fixed in bug 1141931.
This adds support for class="reftest-opaque-layer" and for
reftest-assigned-layer="some-layer-name" to the reftest harness.
From reftest/README.txt:
Opaque Layer Tests: class="reftest-opaque-layer"
================================================
If an element should be assigned to a PaintedLayer that's opaque, set the class
"reftest-opaque-layer" on it. This checks whether the layer is opaque during
the last paint of the test, and it works whether your test is an invalidation
test or not. In order to pass the test, the element has to have a primary
frame, and that frame's display items must all be assigned to a single painted
layer and no other layers, so it can't be used on elements that create stacking
contexts (active or inactive).
Layerization Tests: reftest-assigned-layer="layer-name"
=======================================================
If two elements should be assigned to the same PaintedLayer, choose any string
value as the layer name and set the attribute reftest-assigned-layer="yourname"
on both elements. Reftest will check whether all elements with the same
reftest-assigned-layer value share the same layer. It will also test whether
elements with different reftest-assigned-layer values are assigned to different
layers.
The same restrictions as with class="reftest-opaque-layer" apply: All elements
must have a primary frame, and that frame's display items must all be assigned
to the same PaintedLayer and no other layers. If these requirements are not
met, the test will fail.
