Resume() should return if context is already running

third_party/WebKit/LayoutTests/webaudio/AudioContext/audiocontext-suspend-resume.html

Index: third_party/WebKit/LayoutTests/webaudio/AudioContext/audiocontext-suspend-resume.html
diff --git a/third_party/WebKit/LayoutTests/webaudio/AudioContext/audiocontext-suspend-resume.html b/third_party/WebKit/LayoutTests/webaudio/AudioContext/audiocontext-suspend-resume.html
index bbf470f6d459edc74ac9065faa14535b271696c6..c3a178d535c230de5199e84a936f584a4a4d874e 100644
--- a/third_party/WebKit/LayoutTests/webaudio/AudioContext/audiocontext-suspend-resume.html
+++ b/third_party/WebKit/LayoutTests/webaudio/AudioContext/audiocontext-suspend-resume.html
@@ -117,6 +117,26 @@
       });
     });
 
+    audit.define({
+      label: 'resume-running-context',
+      description: 'Test resuming a running context'
+    }, (task, should) => {
+      let context;
+      should(() => context = new AudioContext(),
+          "Create online context")

[hongchan, 2017/04/05 21:44:42]

Let's not mix single and double quote. We should use the single quote only.

[Raymond Toy, 2017/04/05 21:53:48]

Too much c++.

+        .notThrow();
+
+      should(context.state, "context.state")
+        .beEqualTo("running");
+      should(context.resume(), "context.resume")
+        .beResolved()
+        .then(() => {
+          should(context.state, "context.state after resume")
+            .beEqualTo("running");
+        })
+        .then(() => task.done());
+    });
+
     audit.run();
   </script>
 </body>