On 23/2/10 17:02 , Simon Fraser wrote:
On Feb 23, 2010, at 5:00 AM, Tor Arne Vestbø wrote:
Hey all,
A reoccurring problem when trying to maintain layout-test results
is differences in font and theme metrics for tests that dump the
render tree. Often a test does not actually test font
loading/rendering or theming, but has a piece of text or an input
element somewhere in the test which causes the metrics in the
render tree to be different, and hence the test failing.
I think the correct longterm solution to this problem is to use
reftests. A reftest consists of two files; the test file, and a
"reference" file that should give the same on-screen rendering. When
the test is run, the browser loads both files, takes snapshots, and
does a pixel comparison. Thus font differences between platforms
become less of an issue.
You mean for example that the reference file of a css-border test that
has some header-text describing the test would contain the same
header-text but then a image to represent the reference of the css-part?
tor arne
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