1 PASS successfullyParsed is true
4 Check if back buffer (toDataURL) is equal to front buffer (getImageSourceURL)
5 1) when drawingBuffer is preserved.
6 PASS preserve_canvas3D.toDataURL('image/png') == window.internals.getImageSourceURL(preserve_canvas3D) is true
7 2) when drawingBuffer is not preserved.
8 PASS nonpreserve_canvas3D.toDataURL('image/png') == window.internals.getImageSourceURL(nonpreserve_canvas3D) is true
9 Check if back buffer (toDataURL) is equal to front buffer (getImageSourceURL) one frame after drawing webgl contents.
10 1) when drawingBuffer is preserved.
11 PASS preserve_canvas3D.toDataURL('image/png') == window.internals.getImageSourceURL(preserve_canvas3D) is true
12 2) when drawingBuffer is not preserved. They must be different.
13 PASS nonpreserve_canvas3D.toDataURL('image/png') != window.internals.getImageSourceURL(nonpreserve_canvas3D) is true