content/renderer/media/render_media_log_unittest.cc

   1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/test/simple_test_tick_clock.h"
   6 #include "base/test/test_mock_time_task_runner.h"
   7 #include "content/common/view_messages.h"
   8 #include "content/public/test/mock_render_thread.h"
   9 #include "content/renderer/media/render_media_log.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace content {
  13
  14 class RenderMediaLogTest : public testing::Test {
  15  public:
  16   RenderMediaLogTest()
  17       : log_(new RenderMediaLog()),
  18         tick_clock_(new base::SimpleTestTickClock()),
  19         task_runner_(new base::TestMockTimeTaskRunner()) {
  20     log_->SetTickClockForTesting(scoped_ptr<base::TickClock>(tick_clock_));
  21     log_->SetTaskRunnerForTesting(task_runner_);
  22   }
  23
  24   ~RenderMediaLogTest() override {
  25     task_runner_->ClearPendingTasks();
  26   }
  27
  28   void AddEvent(media::MediaLogEvent::Type type) {
  29     log_->AddEvent(log_->CreateEvent(type));
  30     // AddEvent() could post. Run the task runner to make sure it's executed.
  31     task_runner_->RunUntilIdle();
  32   }
  33
  34   void Advance(base::TimeDelta delta) {
  35     tick_clock_->Advance(delta);
  36     task_runner_->FastForwardBy(delta);
  37   }
  38
  39   int message_count() { return render_thread_.sink().message_count(); }
  40
  41   std::vector<media::MediaLogEvent> GetMediaLogEvents() {
  42     const IPC::Message* msg = render_thread_.sink().GetFirstMessageMatching(
  43         ViewHostMsg_MediaLogEvents::ID);
  44     if (!msg) {
  45       ADD_FAILURE() << "Did not find ViewHostMsg_MediaLogEvents IPC message";
  46       return std::vector<media::MediaLogEvent>();
  47     }
  48
  49     base::Tuple<std::vector<media::MediaLogEvent>> events;
  50     ViewHostMsg_MediaLogEvents::Read(msg, &events);
  51     return base::get<0>(events);
  52   }
  53
  54  private:
  55   base::MessageLoop message_loop_;
  56   MockRenderThread render_thread_;
  57   scoped_refptr<RenderMediaLog> log_;
  58   base::SimpleTestTickClock* tick_clock_;  // Owned by |log_|.
  59   scoped_refptr<base::TestMockTimeTaskRunner> task_runner_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(RenderMediaLogTest);
  62 };
  63
  64 TEST_F(RenderMediaLogTest, ThrottleSendingEvents) {
  65   AddEvent(media::MediaLogEvent::LOAD);
  66   EXPECT_EQ(0, message_count());
  67
  68   // Still shouldn't send anything.
  69   Advance(base::TimeDelta::FromMilliseconds(500));
  70   AddEvent(media::MediaLogEvent::SEEK);
  71   EXPECT_EQ(0, message_count());
  72
  73   // Now we should expect an IPC.
  74   Advance(base::TimeDelta::FromMilliseconds(500));
  75   EXPECT_EQ(1, message_count());
  76
  77   // Verify contents.
  78   std::vector<media::MediaLogEvent> events = GetMediaLogEvents();
  79   ASSERT_EQ(2u, events.size());
  80   EXPECT_EQ(media::MediaLogEvent::LOAD, events[0].type);
  81   EXPECT_EQ(media::MediaLogEvent::SEEK, events[1].type);
  82
  83   // Adding another event shouldn't send anything.
  84   AddEvent(media::MediaLogEvent::PIPELINE_ERROR);
  85   EXPECT_EQ(1, message_count());
  86 }
  87
  88 TEST_F(RenderMediaLogTest, EventSentWithoutDelayAfterIpcInterval) {
  89   AddEvent(media::MediaLogEvent::LOAD);
  90   Advance(base::TimeDelta::FromMilliseconds(1000));
  91   EXPECT_EQ(1, message_count());
  92
  93   // After the ipc send interval passes, the next event should be sent
  94   // right away.
  95   Advance(base::TimeDelta::FromMilliseconds(2000));
  96   AddEvent(media::MediaLogEvent::LOAD);
  97   EXPECT_EQ(2, message_count());
  98 }
  99
 100 TEST_F(RenderMediaLogTest, BufferedExtents) {
 101   AddEvent(media::MediaLogEvent::LOAD);
 102   AddEvent(media::MediaLogEvent::SEEK);
 103
 104   // This event is handled separately and should always appear last regardless
 105   // of how many times we see it.
 106   AddEvent(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED);
 107   AddEvent(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED);
 108   AddEvent(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED);
 109
 110   EXPECT_EQ(0, message_count());
 111   Advance(base::TimeDelta::FromMilliseconds(1000));
 112   EXPECT_EQ(1, message_count());
 113
 114   // Verify contents. There should only be a single buffered extents changed
 115   // event.
 116   std::vector<media::MediaLogEvent> events = GetMediaLogEvents();
 117   ASSERT_EQ(3u, events.size());
 118   EXPECT_EQ(media::MediaLogEvent::LOAD, events[0].type);
 119   EXPECT_EQ(media::MediaLogEvent::SEEK, events[1].type);
 120   EXPECT_EQ(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED, events[2].type);
 121 }
 122
 123 }  // namespace content