Convert Oscillator Audit tests to testharness

third_party/WebKit/LayoutTests/webaudio/resources/late-start-testing.js

 function runLateStartTest(audit, context, node) {

[hongchan, 2017/02/14 17:58:41]

Ditto. Please rebase this file.

 
   // Set up a dummy signal path to keep the audio context running and spend
   // processing time before calling start(0).
   var osc = context.createOscillator();
   var silent = context.createGain();
 
   osc.connect(silent);
   silent.connect(context.destination);
   silent.gain.setValueAtTime(0.0, 0);
   osc.start();
@@ skipping 25 matching lines @@
 
       var nonZeroValueIndex = -1;
       var channelData = buffer.getChannelData(0);
       for (var i = 0; i < channelData.length; i++) {
         if (channelData[i] !== 0) {
           nonZeroValueIndex = i;
           break;
         }
       }
 
-      if (nonZeroValueIndex === -1) {
-        testFailed('The rendered buffer was all zeros.');
-      } else if (nonZeroValueIndex === 0) {
-        testFailed('The first sample was non-zero value. It should be zero.');
-      } else {
-        testPassed('The rendered buffer contains non-zero values after the first sample.');
-      }
+      Should("The rendered buffer should not be all zeroes",
+             nonZeroValueIndex !== -1)
+          .beEqualTo(true);
+      Should("The first sample",
+             channelData[0])
+          .beEqualTo(0);
+      Should("The rendered buffer contains non-zero values after the first sample",
+             nonZeroValueIndex > 0)
+          .beEqualTo(true);
 
       done();
     });
   });
 
-  audit.defineTask('finish-test', function (done) {
-    done();
-    finishJSTest();
-  });
-
-  audit.runTasks(
-    'test-late-start',
-    'finish-test'
-  );
-
-}
+  audit.runTasks();
+}