fail - measured over 19388 pixels carrying ink in either image.
These results are not meaningful. This check renders a single static frame, and nothing in a test document records which moment in time its reference image was captured at - so a correct SMIL implementation and a broken one are equally likely to mismatch. Animation behaviour is covered by dedicated unit tests instead; see ctgnz/foxglove#208 for a real measurement methodology, still to be worked out.
W3C reference (context only, see #200)
Foxglove
Difference
In the difference panel, red marks pixels that
differ beyond tolerance and grey marks matching content. The tinted band, where present, is the
<text id="revision"> legend every test carries: it renders in a fallback font this
library cannot match, so it is excluded from the comparison entirely rather than failing every test.
What this test checks
Every one second, the document alternates between two states. In the first state, the top circle shows the number "02", the bottom circle shows "03", the two images show a picture of the Sydney Opera House, and the two 'use' elements show the text "Use A". In the second state, the top circle shows the number "38", the bottom circle shows "09", the two images show a picture of some water and land, and the two 'use' elements show the text "Use B". The test passes if the document does alternate between these two states, and that clicking on the circles produces the behavior described in the operator script.