Bug 1198386 - Wait for the AudioContext to enter the running state before calling suspend() on it; r=karlt

2015-09-29 09:57:01 -04:00 · 2015-09-29 09:57:01 -04:00 · 724bf24658
--- a/dom/base/test/file_webaudioLoop.html
+++ b/dom/base/test/file_webaudioLoop.html
@ -1,6 +1,13 @@
 <!DOCTYPE html>
 <script>
 var ac = new AudioContext();
+var runningPromise = new Promise(resolve => {
+  ac.onstatechange = event => {
+    if (ac.state == "running") {
+      resolve();
+    }
+  };
+});
 fetch("audio.ogg").then(response => {
  return response.arrayBuffer();
 }).then(ab => {
@ -17,7 +24,9 @@ fetch("audio.ogg").then(response => {

 var suspendPromise;
 function suspendAC() {
-  suspendPromise = ac.suspend();
+  runningPromise.then(() => {
+    suspendPromise = ac.suspend();
+  });
 }

 var resumePromise;