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82 lines
2.3 KiB
HTML
82 lines
2.3 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test ScriptProcessorNode in cycle with no listener is collected</title>
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<script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
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</head>
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<body>
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<script class="testbody" type="text/javascript">
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Components.utils.import('resource://gre/modules/Services.jsm');
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SimpleTest.waitForExplicitFinish();
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var observer = function(subject, topic, data) {
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var id = parseInt(data);
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var index = ids.indexOf(id);
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if (index != -1) {
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ok(true, "Collected AudioNode id " + id + " at index " + index);
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ids.splice(index, 1);
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}
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}
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Services.obs.addObserver(observer, "webaudio-node-demise", false);
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SimpleTest.registerCleanupFunction(function() {
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if (observer) {
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Services.obs.removeObserver(observer, "webaudio-node-demise");
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}
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});
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var ac = new AudioContext();
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var testProcessor = ac.createScriptProcessor(256, 1, 0);
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var delay = ac.createDelay();
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testProcessor.connect(delay);
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delay.connect(testProcessor);
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var referenceProcessor = ac.createScriptProcessor(256, 1, 0);
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var gain = ac.createGain();
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gain.connect(referenceProcessor);
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var processCount = 0;
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testProcessor.onaudioprocess = function(event) {
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++processCount;
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switch (processCount) {
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case 1:
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// Switch to listening to referenceProcessor;
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referenceProcessor.onaudioprocess = event.target.onaudioprocess;
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referenceProcessor = null;
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event.target.onaudioprocess = null;
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case 2:
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// There are no references to testProcessor and so GC can begin.
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SpecialPowers.forceGC();
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break;
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case 3:
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// Another GC should not be required after testProcessor would have
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// received another audioprocess event.
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SpecialPowers.forceCC();
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// Expect that webaudio-demise has been queued.
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// Queue another event to check.
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SimpleTest.executeSoon(function() {
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Services.obs.removeObserver(observer, "webaudio-node-demise");
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observer = null;
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event.target.onaudioprocess = null;
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ok(ids.length == 0, "All expected nodes should be collected");
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SimpleTest.finish();
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});
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break;
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}
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};
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// Nodes with these ids should be collected.
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var ids = [ testProcessor.id, delay.id, gain.id ];
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testProcessor = null;
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delay = null;
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gain = null;
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</script>
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</pre>
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</body>
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</html>
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