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Unified Diff: LayoutTests/webaudio/audiocontext-suspend-resume.html

Issue 625363004: Implement suspend/resume for AudioContext (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Fix typo caught by bots but not locally Created 6 years, 2 months ago
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Index: LayoutTests/webaudio/audiocontext-suspend-resume.html
diff --git a/LayoutTests/webaudio/audiocontext-suspend-resume.html b/LayoutTests/webaudio/audiocontext-suspend-resume.html
new file mode 100644
index 0000000000000000000000000000000000000000..94836b5caf93b4df56333ae21add3232ff512069
--- /dev/null
+++ b/LayoutTests/webaudio/audiocontext-suspend-resume.html
@@ -0,0 +1,93 @@
+<!doctype html>
+<html>
+ <head>
+ <title>Test audiocontext suspend/resume</title>
+ <script src="resources/compatibility.js"></script>
+ <script src="resources/audio-testing.js"></script>
+ <script src="../resources/js-test.js"></script>
+ </head>
+
+ <body>
+ <script>
+ description("Test suspend/resume for an AudioContext");
+
+ var context;
+ var osc;
+ var p1;
+ var p2;
+
+ var sampleRate = 44100;
+ var durationInSeconds = 1;
+
+ function passed () {
+ testPassed("Context resumed correctly.");
+ }
+
+ function failed () {
+ testFailed("Context did not resume!.");
+ }
+
+ function resolvedResumeWhenReleased () {
+ testFailed("resume() on a released context not rejected");
+ finishJSTest();
+ }
+
+ function rejectedResumeWhenReleased () {
+ testPassed("resume() on a released context rejected as expected");
+ finishJSTest();
+ }
+
+ function checkResult (event) {
+ // We don't care about the actual result of the offline rendering.
+ shouldBeEqualToString("context.state", "released");
+ shouldThrow("context.suspend()");
+ context.resume().then(resolvedResumeWhenReleased, rejectedResumeWhenReleased);
+ }
+
+ function runTest() {
+ window.jsTestIsAsync = true;
+ // Test suspend/resume. Ideally this test is best with a online AudioContext, but content
+ // shell doesn't really have a working online AudioContext. Hence, use an
+ // OfflineAudioContext. Not all possible scenarios can be easily checked with an offline
+ // context instead of an online context.
+
+ // Create an audio context with an oscillator.
+ context = new OfflineAudioContext(1, durationInSeconds * sampleRate, sampleRate);
+ osc = context.createOscillator();
+ osc.connect(context.destination);
+
+ // Verify the state.
+ shouldBeEqualToString("context.state", "paused");
+
+ // Multiple calls to suspend() should not be a problem. But these currently do nothing with
+ // an OfflineAudioContext.
+ shouldNotThrow("context.suspend()");
+ shouldNotThrow("context.suspend()");
+
+ // Multiple calls to resume should not be a problem. But these currently do nothing with an
+ // OfflineAudioContext.
+ shouldNotThrow("p1 = context.resume()");
+ shouldBeType(p1, Promise);
+ p1.then(passed, failed);
+ shouldNotThrow("p2 = context.resume()");
+ shouldBeType(p2, Promise);
+ if (p1 === p2)
+ testFailed("Promises from resume should not be equal.");
+ else
+ testPassed("Promises from resume are not equal.");
+ p2.then(passed, failed);
+
+ // Resume doesn't actually resume an offline context
+ shouldBeEqualToString("context.state", "paused");
+
+ // Render the offline context.
+ osc.start();
+ context.oncomplete = checkResult;
+ context.startRendering();
+ }
+
+ runTest();
+ successfullyParsed = true;
+ </script>
+ </body>
+</html>
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