html_audio_element_capturer_source_unittest.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/modules/mediacapturefromelement/html_audio_element_capturer_source.h"

#include "base/memory/weak_ptr.h"
#include "base/run_loop.h"
#include "base/time/time.h"
#include "media/audio/null_audio_sink.h"
#include "media/base/audio_parameters.h"
#include "media/base/fake_audio_render_callback.h"
#include "media/base/media_util.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/modules/mediastream/web_media_stream_audio_sink.h"
#include "third_party/blink/public/platform/scheduler/test/renderer_scheduler_test_support.h"
#include "third_party/blink/public/platform/web_audio_source_provider_impl.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/web/web_heap.h"
#include "third_party/blink/renderer/modules/mediastream/mock_media_stream_audio_sink.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_audio_track.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_component_impl.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_source.h"
#include "third_party/blink/renderer/platform/testing/task_environment.h"

namespace blink {

static const int kNumChannelsForTest = …;
static const int kBufferDurationMs = …;

static const int kAudioTrackSampleRate = …;
static const int kAudioTrackSamplesPerBuffer = …;

// This test needs to bundle together plenty of objects, namely:
// - a WebAudioSourceProviderImpl, which in turn needs an Audio Sink, in this
//  case a NullAudioSink. This is needed to plug HTMLAudioElementCapturerSource
//  and inject audio.
// - a MediaStreamSource, that owns the HTMLAudioElementCapturerSource under
//  test, and a MediaStreamComponent, that the class under test needs to
//  connect to in order to operate correctly. This class has an inner content
//  MediaStreamAudioTrack.
// - finally, a MockMediaStreamAudioSink to observe captured audio frames, and
//  that plugs into the former MediaStreamAudioTrack.
class HTMLAudioElementCapturerSourceTest : public testing::Test { … };

// Constructs and destructs all objects. This is a non trivial sequence.
TEST_F(HTMLAudioElementCapturerSourceTest, ConstructAndDestruct) { … }

// This test verifies that Audio can be properly captured when injected in the
// WebAudioSourceProviderImpl.
TEST_F(HTMLAudioElementCapturerSourceTest, CaptureAudio) { … }

// When a new source is created and started, it is stopped in the same task
// when cross-origin data is detected. This test checks that no data is
// delivered in this case.
TEST_F(HTMLAudioElementCapturerSourceTest,
       StartAndStopInSameTaskCapturesZeroFrames) { … }

TEST_F(HTMLAudioElementCapturerSourceTest, TaintedPlayerDeliversMutedAudio) { … }

}  // namespace blink
chromium/third_party/blink/renderer/modules/mediacapturefromelement/html_audio_element_capturer_source_unittest.cc
