PASS img.setAttribute('crossorigin', 'foo'); img.crossOrigin is "anonymous"
PASS img.setAttribute('crossorigin', 'ANONYMOUS'); img.crossOrigin is "anonymous"
PASS img.setAttribute('crossorigin', 'use-credentials'); img.crossOrigin is "use-credentials"
PASS img.crossOrigin = ''; img.getAttribute('crossorigin') is ""
PASS img.crossOrigin = 'foo'; img.getAttribute('crossorigin') is "foo"
PASS img.setAttribute('crossorigin', 'foo'); img.crossOrigin is "anonymous"
PASS img.setAttribute('crossorigin', 'ANONYMOUS'); img.crossOrigin is "anonymous"
PASS img.setAttribute('crossorigin', 'use-credentials'); img.crossOrigin is "use-credentials"
PASS img.crossOrigin = ''; img.getAttribute('crossorigin') is ""
PASS img.crossOrigin = 'foo'; img.getAttribute('crossorigin') is "foo"