Test <video> element with and without a poster.

Testing poster null, with 'width' and 'height' attributes.
EXPECTED (video.getAttribute('poster') == 'null') OK
EXPECTED (relativeURL(video.poster) == '') OK
EXPECTED (video.clientWidth == '320') OK
EXPECTED (video.clientHeight == '240') OK

Setting poster to "content/greenbox.png"
Testing 25x25 poster 'content/greenbox.png', size should equal image size.
EXPECTED (video.getAttribute('poster') == 'content/greenbox.png') OK
EXPECTED (relativeURL(video.poster) == 'content/greenbox.png') OK
EXPECTED (video.clientWidth == '25') OK
EXPECTED (video.clientHeight == '25') OK

Setting poster to ""
Testing poster '', with NO 'width' or 'height' attributes so size should be <video> default.
EXPECTED (video.getAttribute('poster') == '') OK
EXPECTED (relativeURL(video.poster) == 'video-poster.html') OK
EXPECTED (video.clientWidth == '300') OK
EXPECTED (video.clientHeight == '150') OK

Setting poster to "content/abe.png"
Testing 76x103 poster 'content/abe.png', size should equal image size.
EXPECTED (video.getAttribute('poster') == 'content/abe.png') OK
EXPECTED (relativeURL(video.poster) == 'content/abe.png') OK
EXPECTED (video.clientWidth == '76') OK
EXPECTED (video.clientHeight == '103') OK

Setting poster to "content/bogus.png"
Testing 300x150 poster 'content/bogus.png', invalid url so size should revert to <video> default.
EXPECTED (video.getAttribute('poster') == 'content/bogus.png') OK
EXPECTED (relativeURL(video.poster) == 'content/bogus.png') OK
EXPECTED (video.clientWidth == '300') OK
EXPECTED (video.clientHeight == '150') OK

END OF TEST

