Several Tick counter improvements.

webrtc/modules/utility/source/process_thread_impl_unittest.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 233 matching lines @@
 // Tests that we can wake up the worker thread to give us a callback right
 // away when we know the thread is sleeping.
 TEST(ProcessThreadImpl, WakeUp) {
   ProcessThreadImpl thread("ProcessThread");
   thread.Start();
 
   rtc::scoped_ptr<EventWrapper> started(EventWrapper::Create());
   rtc::scoped_ptr<EventWrapper> called(EventWrapper::Create());
 
   MockModule module;
-  int64_t start_time = 0;
-  int64_t called_time = 0;
+  int64_t start_time;
+  int64_t called_time;
+
   // Ask for a callback after 1000ms.
   // TimeUntilNextProcess will be called twice.
   // The first time we use it to get the thread into a waiting state.
   // Then we  wake the thread and there should not be another call made to
   // TimeUntilNextProcess before Process() is called.
   // The second time TimeUntilNextProcess is then called, is after Process
   // has been called and we don't expect any more calls.
   EXPECT_CALL(module, TimeUntilNextProcess())
       .WillOnce(DoAll(SetTimestamp(&start_time),
                       SetEvent(started.get()),
                       Return(1000)))
       .WillOnce(Return(1000));
   EXPECT_CALL(module, Process())
       .WillOnce(DoAll(SetTimestamp(&called_time),
                       SetEvent(called.get()),
                       Return(0)))
       .WillRepeatedly(Return(0));
 
   EXPECT_CALL(module, ProcessThreadAttached(&thread)).Times(1);
   thread.RegisterModule(&module);
 
   EXPECT_EQ(kEventSignaled, started->Wait(100));
   thread.WakeUp(&module);
   EXPECT_EQ(kEventSignaled, called->Wait(100));
 
   EXPECT_CALL(module, ProcessThreadAttached(nullptr)).Times(1);
   thread.Stop();
 
-  ASSERT_GT(start_time, 0);
-  ASSERT_GT(called_time, 0);
   EXPECT_GE(called_time, start_time);
   uint32_t diff = called_time - start_time;
   // We should have been called back much quicker than 1sec.
   EXPECT_LE(diff, 100u);
 }
 
 // Tests that we can post a task that gets run straight away on the worker
 // thread.
 TEST(ProcessThreadImpl, PostTask) {
   ProcessThreadImpl thread("ProcessThread");
   rtc::scoped_ptr<EventWrapper> task_ran(EventWrapper::Create());
   rtc::scoped_ptr<RaiseEventTask> task(new RaiseEventTask(task_ran.get()));
   thread.Start();
   thread.PostTask(task.Pass());
   EXPECT_EQ(kEventSignaled, task_ran->Wait(100));
   thread.Stop();
 }
 
 }  // namespace webrtc