`<video preload>` testsuite

This testsuite tests preload attribute of <audio> and <video> elements.
The specification can be found at http://www.w3.org/TR/html5/video.html#attr-media-preload.

Where applicable, tests are written for four media formats:

WAVE as data: URL: The WAVE file that is used consists of two samples of silence.
MPEG-4: preload.mp4, size: 494,180 bytes, duration: 1 minute
Ogg: preload.ogv, size: 493,444 bytes, duration: 1 minute
WebM: preload.webm, size: 494,132 bytes, duration: 1 minute

Note:

To make the tests' behavior more predictable, the resources are served by a throttling script that guarantees a download rate of 100KB/s. Since most tests consist of two child tests for <audio> and <video>, a minimum bandwidth of 200KB/s is required to make sure the resources are downloaded before the timeout.
Append #audio or #video to the test URL if you want to only test <audio> or <video> child test respectively.

1. `<video preload="auto">`

TC	Description
preload-auto-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [Webm]	Simple event order check. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )canplaythrough $/` `/^loadstart progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL* test.
preload-auto-to-none-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to none after loadstart. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )canplaythrough $/` `/^loadstart progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL* test.
preload-auto-to-metadata-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to metadata after loadstart. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )canplaythrough $/` `/^loadstart progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL* test.

2. `<video preload="metadata">`

TC	Description
preload-metadata-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple event order check. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )suspend $/` `/^loadstart progress loadedmetadata loadeddata suspend $/` for data: URL test.
preload-metadata-event-order-play-after-suspend [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when play is called after suspend. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )suspend (progress )canplay (progress )canplaythrough $/` `/^loadstart progress loadedmetadata loadeddata suspend canplay canplaythrough $/` for data: URL test.
preload-metadata-networkstate-after-suspend [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple networkState check after suspend. Should be `NETWORK_IDLE`.
preload-metadata-readystate-after-suspend [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple readyState check after suspend. Should be `HAVE_CURRENT_DATA`.
preload-metadata-to-none-after-loadstart-networkstate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple networkState check when preload is set to none after loadstart. Should be `NETWORK_IDLE`.
preload-metadata-to-none-after-loadstart-readystate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple readyState check when preload is set to none after loadstart. Should be `HAVE_CURRENT_DATA`.
preload-metadata-to-none-after-src-networkstate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple networkState check when preload is set to none after src is set. Should be `NETWORK_IDLE`.
preload-metadata-to-none-after-src-readystate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple readyState check when preload is set to none after src is set. Should be `HAVE_NOTHING`.
preload-metadata-to-none-before-src-readystate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple readyState check when preload is set to none before src is set. Should be `HAVE_NOTHING`.
preload-metadata-to-none-after-source-readystate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple readyState check when preload is set to none after a source element is appended. Should be `HAVE_NOTHING`.
preload-metadata-to-none-before-source-readystate [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple readyState check when preload is set to none before a source element is appended. Should be `HAVE_NOTHING`.
preload-metadata-buffered [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple 'buffered' check. Should have start of the media (for Ogg the end should be buffered as well).
preload-metadata-to-auto-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to auto after suspend. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )suspend (progress )canplay (progress )canplaythrough $/` `/^loadstart progress loadedmetadata loadeddata suspend canplay canplaythrough $/` for data: URL test.
preload-metadata-to-none-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to none after loadstart. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )suspend $/` `/^loadstart progress loadedmetadata loadeddata suspend $/` for data: URL test.

3. `<video preload="none">`

TC	Description
preload-none-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple event order check. Expected event order: `/^loadstart suspend $/`
preload-none-event-order-autoplay [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when autoplay is set before loadstart. Expected event order: `/^loadstart (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )* canplaythrough $/` `/^loadstart progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL test.
preload-none-event-order-autoplay-after-suspend [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when autoplay is set after suspend. Expected event order: `/^loadstart suspend (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )canplaythrough $/` `/^loadstart suspend progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL* test.
preload-none-event-order-play-after-suspend [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when play is called after suspend. Expected event order: `/^loadstart suspend (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )canplaythrough $/` `/^loadstart suspend progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL* test.
preload-none-event-order-poster-delayed.html	'window' load should be delayed for the poster to load
preload-none-buffered [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Simple 'buffered' check (Should be empty).
preload-none-to-auto-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to auto after suspend. Expected event order: `/^loadstart suspend (progress )+loadedmetadata (progress )loadeddata (progress )canplay (progress )canplaythrough $/` `/^loadstart suspend progress loadedmetadata loadeddata canplay canplaythrough $/` for data: URL* test.
preload-none-to-invalid-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to an invalid value after suspend. Expected event order: `/^loadstart suspend (progress )+loadedmetadata (progress )loadeddata (progress )suspend $/` `/^loadstart suspend progress loadedmetadata loadeddata suspend $/` for data: URL test.
preload-none-to-metadata-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to metadata after suspend. Expected event order: `/^loadstart suspend (progress )+loadedmetadata (progress )loadeddata (progress )suspend $/` `/^loadstart suspend progress loadedmetadata loadeddata suspend $/` for data: URL test.
preload-none-remove-attribute-event-order [WAVE as data: URL] [MPEG-4] [Ogg] [WebM]	Event order when preload is set to metadata after suspend. Expected event order: `/^loadstart suspend (progress )+loadedmetadata (progress )loadeddata (progress )suspend $/` `/^loadstart suspend progress loadedmetadata loadeddata suspend $/` for data: URL test.
preload-none-poster [test] [reference]	Poster should load when preload="none" (test type: reftest).