Cast logging: Additional stats for getStats() API.

media/cast/logging/stats_event_subscriber_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 "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/rand_util.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "base/time/tick_clock.h"
 #include "media/cast/cast_environment.h"
@@ skipping 122 matching lines @@
   EXPECT_DOUBLE_EQ(it->second, static_cast<double>(dropped_frames));
 }
 
 TEST_F(StatsEventSubscriberTest, Encode) {
   Init(VIDEO_EVENT);
 
   uint32 rtp_timestamp = 0;
   uint32 frame_id = 0;
   int num_frames = 10;
   base::TimeTicks start_time = sender_clock_->NowTicks();
+  AdvanceClocks(base::TimeDelta::FromMicroseconds(35678));
+  base::TimeTicks first_event_time = sender_clock_->NowTicks();
+  base::TimeTicks last_event_time;
   int total_size = 0;
   for (int i = 0; i < num_frames; i++) {
     int size = 1000 + base::RandInt(-100, 100);
     total_size += size;
     cast_environment_->Logging()->InsertEncodedFrameEvent(
         sender_clock_->NowTicks(),
         FRAME_ENCODED, VIDEO_EVENT,
         rtp_timestamp,
         frame_id,
         size,
         true,
         5678);
+    last_event_time = sender_clock_->NowTicks();
 
     AdvanceClocks(base::TimeDelta::FromMicroseconds(35678));
     rtp_timestamp += 90;
     frame_id++;
   }
 
   base::TimeTicks end_time = sender_clock_->NowTicks();
 
   StatsEventSubscriber::StatsMap stats_map;
   subscriber_->GetStatsInternal(&stats_map);
 
   StatsEventSubscriber::StatsMap::iterator it =
       stats_map.find(StatsEventSubscriber::ENCODE_FPS);
   ASSERT_TRUE(it != stats_map.end());
 
   base::TimeDelta duration = end_time - start_time;
   EXPECT_DOUBLE_EQ(
       it->second,
       static_cast<double>(num_frames) / duration.InMillisecondsF() * 1000);
 
   it = stats_map.find(StatsEventSubscriber::ENCODE_KBPS);
   ASSERT_TRUE(it != stats_map.end());
 
   EXPECT_DOUBLE_EQ(it->second,
               static_cast<double>(total_size) / duration.InMillisecondsF() * 8);
+
+  it = stats_map.find(StatsEventSubscriber::FIRST_EVENT_TIME_MS);
+  ASSERT_TRUE(it != stats_map.end());
+
+  EXPECT_DOUBLE_EQ(
+      it->second,
+      (first_event_time - base::TimeTicks::UnixEpoch()).InMillisecondsF());
+
+  it = stats_map.find(StatsEventSubscriber::LAST_EVENT_TIME_MS);
+  ASSERT_TRUE(it != stats_map.end());
+
+  EXPECT_DOUBLE_EQ(
+      it->second,
+      (last_event_time - base::TimeTicks::UnixEpoch()).InMillisecondsF());
 }
 
 TEST_F(StatsEventSubscriberTest, Decode) {
   Init(VIDEO_EVENT);
 
   uint32 rtp_timestamp = 0;
   uint32 frame_id = 0;
   int num_frames = 10;
   base::TimeTicks start_time = sender_clock_->NowTicks();
   for (int i = 0; i < num_frames; i++) {
@@ skipping 269 matching lines @@
   EXPECT_DOUBLE_EQ(it->second, static_cast<double>(num_packets_retransmitted));
 
   it = stats_map.find(StatsEventSubscriber::NUM_PACKETS_RTX_REJECTED);
   ASSERT_TRUE(it != stats_map.end());
 
   EXPECT_DOUBLE_EQ(it->second, static_cast<double>(num_packets_rtx_rejected));
 }
 
 }  // namespace cast
 }  // namespace media