Use AudioStreamMonitor to control power save blocking.

content/browser/media/audio_stream_monitor_unittest.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/media/audio_stream_monitor.h"
+#include "content/browser/media/audio_stream_monitor.h"
 
 #include <map>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/test/simple_test_tick_clock.h"
-#include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
-#include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_renderer_host.h"
 #include "media/audio/audio_power_monitor.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::InvokeWithoutArgs;
 
+namespace content {
+
 namespace {
 
 const int kStreamId = 3;
 const int kAnotherStreamId = 6;
 
 // Used to confirm audio indicator state changes occur at the correct times.
-class MockWebContentsDelegate : public content::WebContentsDelegate {
+class MockWebContentsDelegate : public WebContentsDelegate {
  public:
   MOCK_METHOD2(NavigationStateChanged,
-               void(const content::WebContents* source,
-                    content::InvalidateTypes changed_flags));
+               void(const WebContents* source, InvalidateTypes changed_flags));
 };
 
 }  // namespace
 
-class AudioStreamMonitorTest : public testing::Test {
+class AudioStreamMonitorTest : public RenderViewHostTestHarness {
  public:
   AudioStreamMonitorTest() {
     // Start |clock_| at non-zero.
     clock_.Advance(base::TimeDelta::FromSeconds(1000000));
+  }
 
-    // Create a WebContents instance and set it to use our mock delegate.
-    web_contents_.reset(content::WebContents::Create(
-        content::WebContents::CreateParams(&profile_, NULL)));
-    web_contents_->SetDelegate(&mock_web_contents_delegate_);
+  virtual void SetUp() OVERRIDE {
+    RenderViewHostTestHarness::SetUp();
+
+    WebContents* web_contents = RenderViewHostTestHarness::web_contents();
+    web_contents->SetDelegate(&mock_web_contents_delegate_);
 
     // Create an AudioStreamMonitor instance whose lifecycle is tied to that of
     // |web_contents_|, and override its clock with the test clock.
-    AudioStreamMonitor::CreateForWebContents(web_contents_.get());
-    CHECK(audio_stream_monitor());
-    const_cast<base::TickClock*&>(audio_stream_monitor()->clock_) = &clock_;
-  }
-
-  AudioStreamMonitor* audio_stream_monitor() {
-    return AudioStreamMonitor::FromWebContents(web_contents_.get());
+    AudioStreamMonitor::CreateForWebContents(web_contents);
+    monitor_ = AudioStreamMonitor::FromWebContents(web_contents);
+    CHECK(monitor_);
+    const_cast<base::TickClock*&>(monitor_->clock_) = &clock_;
   }
 
   base::TimeTicks GetTestClockTime() { return clock_.NowTicks(); }
 
   void AdvanceClock(const base::TimeDelta& delta) { clock_.Advance(delta); }
 
   AudioStreamMonitor::ReadPowerAndClipCallback CreatePollCallback(
       int stream_id) {
     return base::Bind(
         &AudioStreamMonitorTest::ReadPower, base::Unretained(this), stream_id);
   }
 
   void SetStreamPower(int stream_id, float power) {
     current_power_[stream_id] = power;
   }
 
-  void SimulatePollTimerFired() { audio_stream_monitor()->Poll(); }
+  void SimulatePollTimerFired() { monitor_->Poll(); }
 
-  void SimulateOffTimerFired() { audio_stream_monitor()->MaybeToggle(); }
+  void SimulateOffTimerFired() { monitor_->MaybeToggle(); }
 
   void ExpectIsPolling(int stream_id, bool is_polling) {
-    AudioStreamMonitor* const monitor = audio_stream_monitor();
     EXPECT_EQ(is_polling,
-              monitor->poll_callbacks_.find(stream_id) !=
-                  monitor->poll_callbacks_.end());
-    EXPECT_EQ(!monitor->poll_callbacks_.empty(),
-              monitor->poll_timer_.IsRunning());
+              monitor_->poll_callbacks_.find(stream_id) !=
+                  monitor_->poll_callbacks_.end());
+    EXPECT_EQ(!monitor_->poll_callbacks_.empty(),
+              monitor_->poll_timer_.IsRunning());
   }
 
   void ExpectTabWasRecentlyAudible(bool was_audible,
                                    const base::TimeTicks& last_blurt_time) {
-    AudioStreamMonitor* const monitor = audio_stream_monitor();
-    EXPECT_EQ(was_audible, monitor->was_recently_audible_);
-    EXPECT_EQ(last_blurt_time, monitor->last_blurt_time_);
-    EXPECT_EQ(monitor->was_recently_audible_, monitor->off_timer_.IsRunning());
+    EXPECT_EQ(was_audible, monitor_->was_recently_audible_);
+    EXPECT_EQ(last_blurt_time, monitor_->last_blurt_time_);
+    EXPECT_EQ(monitor_->was_recently_audible_,
+              monitor_->off_timer_.IsRunning());
+    const bool have_blocker = monitor_->blocker_;
+    EXPECT_EQ(have_blocker, monitor_->off_timer_.IsRunning());
   }
 
   void ExpectWebContentsWillBeNotifiedOnce(bool should_be_audible) {
-    EXPECT_CALL(mock_web_contents_delegate_,
-                NavigationStateChanged(web_contents_.get(),
-                                       content::INVALIDATE_TYPE_TAB))
+    EXPECT_CALL(
+        mock_web_contents_delegate_,
+        NavigationStateChanged(RenderViewHostTestHarness::web_contents(),
+                               INVALIDATE_TYPE_TAB))
         .WillOnce(InvokeWithoutArgs(
             this,
             should_be_audible
                 ? &AudioStreamMonitorTest::ExpectIsNotifyingForToggleOn
                 : &AudioStreamMonitorTest::ExpectIsNotifyingForToggleOff))
         .RetiresOnSaturation();
   }
 
   static base::TimeDelta one_polling_interval() {
     return base::TimeDelta::FromSeconds(1) /
            AudioStreamMonitor::kPowerMeasurementsPerSecond;
   }
 
   static base::TimeDelta holding_period() {
     return base::TimeDelta::FromMilliseconds(
         AudioStreamMonitor::kHoldOnMilliseconds);
   }
 
+  void StartMonitoring(
+      int stream_id,
+      const AudioStreamMonitor::ReadPowerAndClipCallback& callback) {
+    monitor_->StartMonitoringStreamOnUIThread(stream_id, callback);
+  }
+
+  void StopMonitoring(int stream_id) {
+    monitor_->StopMonitoringStreamOnUIThread(stream_id);
+  }
+
+ protected:
+  AudioStreamMonitor* monitor_;
+
  private:
   std::pair<float, bool> ReadPower(int stream_id) {
     return std::make_pair(current_power_[stream_id], false);
   }
 
   void ExpectIsNotifyingForToggleOn() {
-    EXPECT_TRUE(audio_stream_monitor()->WasRecentlyAudible());
+    EXPECT_TRUE(monitor_->WasRecentlyAudible());
   }
 
   void ExpectIsNotifyingForToggleOff() {
-    EXPECT_FALSE(audio_stream_monitor()->WasRecentlyAudible());
+    EXPECT_FALSE(monitor_->WasRecentlyAudible());
   }
 
-  content::TestBrowserThreadBundle browser_thread_bundle_;
-  TestingProfile profile_;
   MockWebContentsDelegate mock_web_contents_delegate_;
   base::SimpleTestTickClock clock_;
   std::map<int, float> current_power_;
-  scoped_ptr<content::WebContents> web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioStreamMonitorTest);
 };
 
 // Tests that AudioStreamMonitor is polling while it has a
 // ReadPowerAndClipCallback, and is not polling at other times.
 TEST_F(AudioStreamMonitorTest, PollsWhenProvidedACallback) {
-  EXPECT_FALSE(audio_stream_monitor()->WasRecentlyAudible());
+  EXPECT_FALSE(monitor_->WasRecentlyAudible());
   ExpectIsPolling(kStreamId, false);
 
-  audio_stream_monitor()->StartMonitoringStream(kStreamId,
-                                                CreatePollCallback(kStreamId));
-  EXPECT_FALSE(audio_stream_monitor()->WasRecentlyAudible());
+  StartMonitoring(kStreamId, CreatePollCallback(kStreamId));
+  EXPECT_FALSE(monitor_->WasRecentlyAudible());
   ExpectIsPolling(kStreamId, true);
 
-  audio_stream_monitor()->StopMonitoringStream(kStreamId);
-  EXPECT_FALSE(audio_stream_monitor()->WasRecentlyAudible());
+  StopMonitoring(kStreamId);
+  EXPECT_FALSE(monitor_->WasRecentlyAudible());
   ExpectIsPolling(kStreamId, false);
 }
 
 // Tests that AudioStreamMonitor debounces the power level readings it's taking,
 // which could be fluctuating rapidly between the audible versus silence
 // threshold.  See comments in audio_stream_monitor.h for expected behavior.
 TEST_F(AudioStreamMonitorTest,
        ImpulsesKeepIndicatorOnUntilHoldingPeriodHasPassed) {
-  audio_stream_monitor()->StartMonitoringStream(kStreamId,
-                                                CreatePollCallback(kStreamId));
+  StartMonitoring(kStreamId, CreatePollCallback(kStreamId));
 
   // Expect WebContents will get one call form AudioStreamMonitor to toggle the
   // indicator on upon the very first poll.
   ExpectWebContentsWillBeNotifiedOnce(true);
 
   // Loop, each time testing a slightly longer period of polled silence.  The
   // indicator should remain on throughout.
   int num_silence_polls = 0;
   base::TimeTicks last_blurt_time;
   do {
@@ skipping 26 matching lines @@
   for (int i = 0; i < 10; ++i) {
     SimulateOffTimerFired();
     ExpectTabWasRecentlyAudible(false, last_blurt_time);
     AdvanceClock(one_polling_interval());
   }
 }
 
 // Tests that the AudioStreamMonitor correctly processes the blurts from two
 // different streams in the same tab.
 TEST_F(AudioStreamMonitorTest, HandlesMultipleStreamsBlurting) {
-  audio_stream_monitor()->StartMonitoringStream(kStreamId,
-                                                CreatePollCallback(kStreamId));
-  audio_stream_monitor()->StartMonitoringStream(
-      kAnotherStreamId,
-      CreatePollCallback(kAnotherStreamId));
+  StartMonitoring(kStreamId, CreatePollCallback(kStreamId));
+  StartMonitoring(kAnotherStreamId, CreatePollCallback(kAnotherStreamId));
 
   base::TimeTicks last_blurt_time;
   ExpectTabWasRecentlyAudible(false, last_blurt_time);
 
   // Measure audible sound from the first stream and silence from the second.
   // The indicator turns on (i.e., tab was recently audible).
   ExpectWebContentsWillBeNotifiedOnce(true);
   SetStreamPower(kStreamId, media::AudioPowerMonitor::max_power());
   SetStreamPower(kAnotherStreamId, media::AudioPowerMonitor::zero_power());
   last_blurt_time = GetTestClockTime();
@@ skipping 43 matching lines @@
   ExpectTabWasRecentlyAudible(false, last_blurt_time);
 
   // Polling should not turn the indicator back while both streams are remaining
   // silent.
   for (int i = 0; i < 100; ++i) {
     AdvanceClock(one_polling_interval());
     SimulatePollTimerFired();
     ExpectTabWasRecentlyAudible(false, last_blurt_time);
   }
 }
+
+}  // namespace content