Defined in "Web IDL" (draft)
Actual output:
FAIL (fallback content)
Harness status: OK
Found 1 tests
assert_throws_js(function "function TypeError() { [native code] }", function "function() { ctx.createPattern('../images/red.png', 'repeat'); }") at /html/canvas/element/fill-and-stroke-styles/2d.pattern.image.string.html:23:3