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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/webaudio/the-audio-api/processing-model/cycle-without-delay.html
parentInitial commit. (diff)
downloadthunderbird-upstream.tar.xz
thunderbird-upstream.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/processing-model/cycle-without-delay.html')
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1 files changed, 36 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/processing-model/cycle-without-delay.html b/testing/web-platform/tests/webaudio/the-audio-api/processing-model/cycle-without-delay.html
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+++ b/testing/web-platform/tests/webaudio/the-audio-api/processing-model/cycle-without-delay.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html class="a">
+ <head>
+ <title>Cycles without DelayNode in audio node graph</title>
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+ <script>
+ function doTest() {
+ var off = new OfflineAudioContext(1, 512, 48000);
+ var osc = new OscillatorNode(off);
+ var fb = new GainNode(off);
+ // zero delay feedback loop
+ osc.connect(fb).connect(fb).connect(off.destination);
+ osc.start(0);
+ return off.startRendering().then((b) => {
+ return Promise.resolve(b.getChannelData(0));
+ });
+ }
+
+ promise_test(() => {
+ return doTest().then(samples => {
+ var silent = true;
+ for (var i = 0; i < samples.length; i++) {
+ if (samples[i] != 0.0) {
+ silent = false;
+ break;
+ }
+ }
+ assert_true(silent);
+ });
+ }, 'Test that cycles that don\'t contain a DelayNode are muted');
+ </script>
+ </body>
+</html>