summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html
diff options
context:
space:
mode:
Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html')
-rw-r--r--testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html77
1 files changed, 77 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html
new file mode 100644
index 0000000000..eca15dedfa
--- /dev/null
+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <title>
+ audionode-connect-order.html
+ </title>
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ <script src="/webaudio/resources/audit-util.js"></script>
+ <script src="/webaudio/resources/audit.js"></script>
+ </head>
+ <body>
+ <script id="layout-test-code">
+ let audit = Audit.createTaskRunner();
+ let sampleRate = 44100.0;
+ let renderLengthSeconds = 0.125;
+ let delayTimeSeconds = 0.1;
+
+ function createSinWaveBuffer(context, lengthInSeconds, frequency) {
+ let audioBuffer =
+ context.createBuffer(1, lengthInSeconds * sampleRate, sampleRate);
+
+ let n = audioBuffer.length;
+ let data = audioBuffer.getChannelData(0);
+
+ for (let i = 0; i < n; ++i) {
+ data[i] = Math.sin(frequency * 2 * Math.PI * i / sampleRate);
+ }
+
+ return audioBuffer;
+ }
+
+ audit.define(
+ {
+ label: 'Test connections',
+ description:
+ 'AudioNode connection order doesn\'t trigger assertion errors'
+ },
+ function(task, should) {
+ // Create offline audio context.
+ let context = new OfflineAudioContext(
+ 1, sampleRate * renderLengthSeconds, sampleRate);
+ let toneBuffer =
+ createSinWaveBuffer(context, renderLengthSeconds, 880);
+
+ let bufferSource = context.createBufferSource();
+ bufferSource.buffer = toneBuffer;
+ bufferSource.connect(context.destination);
+
+ let delay = context.createDelay();
+ delay.delayTime.value = delayTimeSeconds;
+
+ // We connect delay node to gain node before anything is connected
+ // to delay node itself. We do this because we try to trigger the
+ // ASSERT which might be fired due to AudioNode connection order,
+ // especially when gain node and delay node is involved e.g.
+ // https://bugs.webkit.org/show_bug.cgi?id=76685.
+
+ should(() => {
+ let gain = context.createGain();
+ gain.connect(context.destination);
+ delay.connect(gain);
+ }, 'Connecting nodes').notThrow();
+
+ bufferSource.start(0);
+
+ let promise = context.startRendering();
+
+ should(promise, 'OfflineContext startRendering()')
+ .beResolved()
+ .then(task.done.bind(task));
+ });
+
+ audit.run();
+ </script>
+ </body>
+</html>