1 Test the parsing of the -webkit-image-set function.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
7 Too many url parameters : url(#a #b)
13 No comma : url('#a') 1x url('#b') 2x
16 Too many scale factor parameters : url('#a') 1x 2x
19 Scale factor is 0 : url('#a') 0x
22 No url function : '#a' 1x
24 PASS successfullyParsed is true