Add API tests to the experimental Speech Input API.

chrome/test/data/extensions/api_test/speech_input/recognition/test.js

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Extension Speech Input api test.
+// browser_tests --gtest_filter="ExtensionSpeechInputApiTest.*"
+
+chrome.test.runTests([
+  function testSpeechInputRecognition() {
+    var did_sound_start = false;
+    var did_sound_end = false;
+
+    // Check that sound starts once and before ending.
+    chrome.experimental.speechInput.onSoundStart.addListener(function() {
+      chrome.test.assertFalse(did_sound_start);
+      chrome.test.assertFalse(did_sound_end);
+      did_sound_start = true;
+    });
+
+    // Check that sounds ends once and after starting.
+    chrome.experimental.speechInput.onSoundEnd.addListener(function() {
+      chrome.test.assertTrue(did_sound_start);
+      chrome.test.assertFalse(did_sound_end);
+      did_end_sound = true;
+    });
+
+    // Check that both sound events happened and that the given results
+    // match the expected ones.
+    chrome.experimental.speechInput.onResult.addListener(function(event) {
+      chrome.test.assertTrue(did_sound_start);
+      chrome.test.assertTrue(did_end_sound);
+      chrome.test.assertEq(event.hypotheses.length, 1);
+      chrome.test.assertEq(event.hypotheses[0].utterance, "this is a test");
+      chrome.test.assertEq(event.hypotheses[0].confidence, 0.99);
+
+      // Ensure no recording is happening after delivering results.
+      chrome.experimental.speechInput.isRecording(function(recording) {
+        chrome.test.assertNoLastError();
+        chrome.test.assertFalse(recording);
+
+        // Stopping should fail since we're in the idle state again.
+        chrome.experimental.speechInput.stop(function() {
+          chrome.test.assertEq(chrome.extension.lastError.message,
+              "invalidOperation");
+          chrome.test.succeed();
+        });
+      });
+    });
+
+    // Ensure that no errors happened during the recognition.
+    chrome.experimental.speechInput.onError.addListener(function(event) {
+      chrome.test.fail();
+    });
+
+    // Recording is not active, start it.
+    chrome.experimental.speechInput.isRecording(function(recording) {
+      chrome.test.assertNoLastError();
+      chrome.test.assertFalse(recording);
+      chrome.experimental.speechInput.start({}, function() {
+        chrome.test.assertNoLastError();
+      });
+    });
+  }
+]);