Implement native speech recognition for the launcher.

chrome/browser/ui/app_list/speech_recognizer_browsertest.cc

+// Copyright 2014 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.
+
+#include "chrome/browser/ui/app_list/speech_recognizer.h"
+
+#include "base/command_line.h"
+#include "base/run_loop.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/threading/platform_thread.h"
+#include "chrome/browser/ui/app_list/speech_recognizer_delegate.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/test/fake_speech_recognition_manager.h"
+#include "content/public/test/web_contents_tester.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::InvokeWithoutArgs;
+using ::testing::Return;
+
+namespace app_list {
+
+class MockSpeechRecognizerDelegate : public SpeechRecognizerDelegate {
+ public:
+  MockSpeechRecognizerDelegate() {}
+
+  MOCK_METHOD2(OnSpeechResult, void(const base::string16&, bool));
+  MOCK_METHOD1(OnSpeechSoundLevelChanged, void(int16_t));
+  MOCK_METHOD1(OnSpeechRecognitionStateChanged, void(SpeechRecognitionState));
+  MOCK_METHOD0(GetSpeechContents, content::WebContents*());
+};
+
+class AppListSpeechRecognizerBrowserTest : public InProcessBrowserTest {
+ public:
+  AppListSpeechRecognizerBrowserTest() {}
+
+  void SetUpOnMainThread() override {
+    InProcessBrowserTest::SetUpOnMainThread();
+
+    fake_speech_recognition_manager_.reset(
+        new content::FakeSpeechRecognitionManager());
+    fake_speech_recognition_manager_->set_should_send_fake_response(true);
+    content::SpeechRecognitionManager::SetManagerForTesting(
+        fake_speech_recognition_manager_.get());
+    mock_speech_delegate_.reset(new MockSpeechRecognizerDelegate());
+    test_contents_.reset(content::WebContentsTester::CreateTestWebContents(
+        browser()->profile(), NULL));
+  }
+
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    command_line->AppendSwitch(switches::kEnableExperimentalHotwording);
+  }
+
+  void TearDownOnMainThread() override {
+    // This puts stuff on the IO loop which needs to be executed.
+    test_contents_.reset();
+
+    // Poor-person's way of ensuring IO loop is idle.
+    auto io_loop = content::BrowserThread::UnsafeGetMessageLoopForThread(
+        content::BrowserThread::IO);
+    ASSERT_TRUE(io_loop);
+    while (!io_loop->IsIdleForTesting()) {
+      // Sleep for a little bit, allowing the IO thread to obtain any locks
+      // taken by IsIdleForTesting(). Without this sleep, this loop may livelock
+      // the message loop causing the test to fail.
+      base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(10));
+    }
+  }
+
+ protected:
+  scoped_ptr<content::FakeSpeechRecognitionManager>
+      fake_speech_recognition_manager_;
+  scoped_ptr<MockSpeechRecognizerDelegate> mock_speech_delegate_;
+  scoped_ptr<content::WebContents> test_contents_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AppListSpeechRecognizerBrowserTest);
+};
+
+IN_PROC_BROWSER_TEST_F(AppListSpeechRecognizerBrowserTest, RecognizeSpeech) {
+  scoped_refptr<SpeechRecognizer> recognizer =
+      new SpeechRecognizer(mock_speech_delegate_.get(),
+                           browser()->profile()->GetRequestContext(),
+                           "en");
+
+  base::RunLoop run_loop;
+  EXPECT_CALL(*mock_speech_delegate_, GetSpeechContents())
+      .WillOnce(Return(test_contents_.get()));
+  EXPECT_CALL(*mock_speech_delegate_,
+              OnSpeechResult(base::ASCIIToUTF16("Pictures of the moon"), true));
+  EXPECT_CALL(*mock_speech_delegate_,
+              OnSpeechRecognitionStateChanged(SPEECH_RECOGNITION_READY))
+      .WillOnce(InvokeWithoutArgs(&run_loop, &base::RunLoop::Quit));
+  recognizer->Start();
+  run_loop.Run();
+
+  recognizer->Stop();
+}
+
+}  // namespace app_list
+
+