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Case: re-invoke the load() on an element which had dispatched a task to resolve a promise. Expected result: the already dispatched promise should still be resolved. MozReview-Commit-ID: CGthPmPeaif --HG-- extra : rebase_source : 3c377a62ecf6f84c382f49d856be8c07871c59b0 extra : source : cebac214f77710b911f56674ed92989aa1fa5957
49 lines
1.6 KiB
HTML
49 lines
1.6 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Media test: promise-based play() method</title>
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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<script type="text/javascript" src="manifest.js"></script>
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</head>
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<body>
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<pre id="test">
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<script>
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// Name: loadAlgorithmDoesNotCancelTasks
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// Case: re-invoke the load() on an element which had dispatched a task to resolve a promise.
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// Expected result: the already dispatched promise should still be resolved with undefined.
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let manager = new MediaTestManager;
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function initTest(test, token) {
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manager.started(token);
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let element = document.createElement(getMajorMimeType(test.type));
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element.preload = "auto";
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element.src = test.name;
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// We must wait for "canplay" event; otherwise, invoke play() will lead to a
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// pending promise and will then be rejected by the following load().
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once(element, "canplay").then(() => {
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// The play() promise will be queued to be resolved immediately, which means
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// the promise is not in the pending list.
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element.play().then(
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(result) => {
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if (result == undefined) {
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ok(true, `${token} is resolved with ${result}.`);
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} else {
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ok(false, `${token} is resolved with ${result}.`);
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}
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},
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(error) => {
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ok(false, `${token} is rejected with ${error.name}.`);
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}
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).then( () => { manager.finished(token); } );
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element.src = test.name; // Re-invoke the load algorithm again.
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});
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}
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manager.runTests(gSmallTests, initTest);
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</script> |