Check that all the preserveAspectRatio values are supported
for the <image> element. In particular, check that
values which are not supported on the svg element's
preserveAspectRatio are supported for <image>.
Run the test. No interaction required.
The test shows four smiley images: the leftmost one is the reference,
and the three on the right are the three sub-tests. The test is passed
if the following conditions are met:
- The image in the first sub-test is shown within the blue rectangle,
its aspect ratio preserved and with white bars between the blue rectangle
and the left and right edges of the image.
- The image in the second sub-test is shown within the blue rectangle,
its aspect ratio preserved and with white bars between the blue rectangle
and the top and bottom edges of the image.
- The image in the third sub-test is shown stretched, having the same
size as the blue rectangle shown on the left of the test slide underneath
the text "Viewport 2".