Disable remote TTS services when offline.

chrome/browser/speech/extension_api/tts_extension_apitest.cc

 // Copyright (c) 2012 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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/speech/extension_api/tts_extension_api.h"
 #include "chrome/browser/speech/tts_controller.h"
 #include "chrome/browser/speech/tts_platform.h"
 #include "chrome/common/chrome_switches.h"
+#include "net/base/network_change_notifier.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Needed for CreateFunctor.
 #define GMOCK_MUTANT_INCLUDE_LATE_OBJECT_BINDING
 #include "testing/gmock_mutant.h"
 
 using ::testing::AnyNumber;
 using ::testing::CreateFunctor;
 using ::testing::DoAll;
@@ skipping 111 matching lines @@
       return;
     }
 
     controller->OnTtsEvent(utterance_id, event_type, char_index, message);
   }
 
  private:
   base::WeakPtrFactory<MockTtsPlatformImpl> ptr_factory_;
 };
 
+class FakeNetworkOnlineStateForTest : public net::NetworkChangeNotifier {
+ public:
+  explicit FakeNetworkOnlineStateForTest(bool online) : online_(online) {}
+  virtual ~FakeNetworkOnlineStateForTest() {}
+
+  virtual ConnectionType GetCurrentConnectionType() const OVERRIDE {
+    return online_ ?
+        net::NetworkChangeNotifier::CONNECTION_ETHERNET :
+        net::NetworkChangeNotifier::CONNECTION_NONE;
+  }
+
+ private:
+  bool online_;
+  DISALLOW_COPY_AND_ASSIGN(FakeNetworkOnlineStateForTest);
+};
+
 class TtsApiTest : public ExtensionApiTest {
  public:
   virtual void SetUpInProcessBrowserTestFixture() {
     ExtensionApiTest::SetUpInProcessBrowserTestFixture();
     TtsController::GetInstance()->SetPlatformImpl(&mock_platform_impl_);
     EXPECT_CALL(mock_platform_impl_, GetVoices(_))
         .Times(AnyNumber());
   }
 
  protected:
@@ skipping 216 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(TtsApiTest, LangMatching) {
   EXPECT_CALL(mock_platform_impl_, IsSpeaking());
   EXPECT_CALL(mock_platform_impl_, StopSpeaking())
       .WillRepeatedly(Return(true));
 
   ASSERT_TRUE(RunExtensionTest("tts_engine/lang_matching")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(TtsApiTest, NetworkSpeechEngine) {
+  // Simulate online network state.
+  net::NetworkChangeNotifier::DisableForTest disable_for_test;
+  FakeNetworkOnlineStateForTest fake_online_state(true);

[not at google - send to devlin, 2013/11/04 23:30:43]

how... does this get installed? but sure.

[dmazzoni, 2013/11/04 23:38:15]

It's a little odd, but a NetworkChangeNotifier registers itself as the global
network change notifier upon construction, so to create your own in a test you
just have to create a DisableForTest first...

[not at google - send to devlin, 2013/11/04 23:40:45]

You could make the DisableForTest a member of FakeNetworkOnlineStateForTest, but
I can't decide whether that's any better.

+
   ExtensionService* service = extensions::ExtensionSystem::Get(
       profile())->extension_service();
   service->component_loader()->AddNetworkSpeechSynthesisExtension();
   ASSERT_TRUE(RunExtensionTest("tts_engine/network_speech_engine")) << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(TtsApiTest, NoNetworkSpeechEngineWhenOffline) {
+  // Simulate offline network state.
+  net::NetworkChangeNotifier::DisableForTest disable_for_test;
+  FakeNetworkOnlineStateForTest fake_online_state(false);
+
+  ExtensionService* service = extensions::ExtensionSystem::Get(
+      profile())->extension_service();
+  service->component_loader()->AddNetworkSpeechSynthesisExtension();
+  // Test should fail when offline.
+  ASSERT_FALSE(RunExtensionTest("tts_engine/network_speech_engine"));
+}
+
 // http://crbug.com/122474
 IN_PROC_BROWSER_TEST_F(TtsApiTest, EngineApi) {
   ASSERT_TRUE(RunExtensionTest("tts_engine/engine_api")) << message_;
 }
 
 }  // namespace extensions