First unit tests for WebRTCAudioDevice.

content/renderer/media/webrtc_audio_device_unittest.cc

+// 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.
+
+#include "base/test/test_timeouts.h"
+#include "content/renderer/media/webrtc_audio_device_impl.h"
+#include "content/test/webrtc_audio_device_test.h"
+#include "media/audio/audio_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "third_party/webrtc/voice_engine/main/interface/voe_audio_processing.h"
+#include "third_party/webrtc/voice_engine/main/interface/voe_base.h"
+#include "third_party/webrtc/voice_engine/main/interface/voe_file.h"
+#include "third_party/webrtc/voice_engine/main/interface/voe_network.h"
+
+using testing::_;
+using testing::InvokeWithoutArgs;
+using testing::Return;
+using testing::StrEq;
+
+namespace {
+
+ACTION_P(QuitMessageLoop, loop_or_proxy) {
+  loop_or_proxy->PostTask(FROM_HERE, new MessageLoop::QuitTask());
+}
+
+class AudioUtil : public AudioUtilInterface {
+ public:
+  virtual double GetAudioHardwareSampleRate() OVERRIDE {
+    return media::GetAudioHardwareSampleRate();
+  }
+  virtual double GetAudioInputHardwareSampleRate() OVERRIDE {
+    return media::GetAudioInputHardwareSampleRate();
+  }
+};
+
+}  // end namespace
+
+// Basic test that instantiates and initializes an instance of
+// WebRtcAudioDeviceImpl.
+TEST_F(WebRTCAudioDeviceTest, Construct) {
+  AudioUtil audio_util;
+  set_audio_util_callback(&audio_util);

[henrika (OOO until Aug 14), 2011/11/04 10:35:12]

Where can I find the definition of set_audio_util_callback()? Are you missing a
file in this CL?

[tommi (sloooow) - chröme, 2011/11/07 10:27:28]

webrtc_audio_device_test.h@130

+  scoped_refptr<WebRtcAudioDeviceImpl> audio_device(
+      new WebRtcAudioDeviceImpl());
+  audio_device->SetSessionId(1);
+
+  WebRTCAutoDelete<webrtc::VoiceEngine> engine(webrtc::VoiceEngine::Create());

[henrika (OOO until Aug 14), 2011/11/04 10:35:12]

Why not ensure that engine is valid (not NULL) here?

[tommi (sloooow) - chröme, 2011/11/07 10:27:28]

Done.

+
+  ScopedWebRTCPtr<webrtc::VoEBase> base(engine.get());
+  int err = base->Init(audio_device);
+  EXPECT_EQ(0, err);
+}
+
+// Plays a local file.  This test usually takes just under a minute to run
+// and requires an audio card to work, so disabled by default.
+TEST_F(WebRTCAudioDeviceTest, DISABLED_PlayLocalFileLong) {
+  AudioUtil audio_util;
+  set_audio_util_callback(&audio_util);
+  PlayLocalFile(0);

[henrika (OOO until Aug 14), 2011/11/04 10:35:12]

I have never seen this before where a unit test calls test functions that are
not in the same file as the actual unit test. Guess you have a good reason for
it.

[henrika (OOO until Aug 14), 2011/11/04 10:35:12]

Add comment about meaning of '0' here.

[tommi (sloooow) - chröme, 2011/11/07 10:27:28]

The reason is because two tests use the same code.  However, I think I'm just
going to make one test that uses TestTimeouts::action_timeout_ms() and move all
the code to this test.

+}
+
+TEST_F(WebRTCAudioDeviceTest, PlayLocalFile) {
+  AudioUtil audio_util;
+  set_audio_util_callback(&audio_util);
+  PlayLocalFile(TestTimeouts::action_timeout_ms());
+}