Add API tests to the experimental Speech Input API.

chrome/test/data/extensions/api_test/speech_input/start_stop/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 testSpeechInputStartStop() {
+    var count = 0;
+
+    // Recording is not active, start it.
+    chrome.experimental.speechInput.isRecording(function(recording) {
+      chrome.test.assertNoLastError();
+      chrome.test.assertFalse(recording);
+      chrome.experimental.speechInput.start({}, started);
+    });
+
+    // There should be no error and recording should be active. Stop it.
+    function started() {
+      chrome.test.assertNoLastError();
+      chrome.experimental.speechInput.isRecording(function(recording) {
+        chrome.test.assertNoLastError();
+        chrome.test.assertTrue(recording);
+        chrome.experimental.speechInput.stop(stopped);
+      });
+    }
+
+    // There should be no error and recording shouldn't be active again.
+    // Restart recording if not repeated at least 3 times.
+    function stopped() {
+      chrome.test.assertNoLastError();
+      chrome.experimental.speechInput.isRecording(function(recording) {
+        chrome.test.assertNoLastError();
+        chrome.test.assertFalse(recording);
+        if (++count < 3)
+          chrome.experimental.speechInput.start({}, started);
+        else
+          chrome.test.succeed();
+      });
+    }
+  },
+
+  function testSpeechInputInvalidOperation() {
+    // Calling start once recording should generate an invalid operation error.
+    chrome.experimental.speechInput.stop(function() {
+      chrome.test.assertEq(chrome.extension.lastError.message,
+          "invalidOperation");
+      chrome.experimental.speechInput.start({}, started);
+    });
+
+    // Calling stop before recording should generate an invalid operation error.
+    function started() {
+      chrome.test.assertNoLastError();
+      chrome.experimental.speechInput.start({}, function() {
+        chrome.test.assertEq(chrome.extension.lastError.message,
+            "invalidOperation");
+        chrome.test.succeed();
+      });
+    }
+  }
+]);