Cast: Add tests for clocks being slow/fast

media/cast/test/fake_single_thread_task_runner.h

 // 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.
 
 #ifndef MEDIA_CAST_TEST_FAKE_TASK_RUNNER_H_
 #define MEDIA_CAST_TEST_FAKE_TASK_RUNNER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/single_thread_task_runner.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "base/test/test_pending_task.h"
 
 namespace media {
 namespace cast {
 namespace test {
 
 typedef base::TestPendingTask PostedTask;
 
 class FakeSingleThreadTaskRunner : public base::SingleThreadTaskRunner {
  public:
   explicit FakeSingleThreadTaskRunner(base::SimpleTestTickClock* clock);
 
   void RunTasks();
 
+  // Note: Advances |clock_|.
+  void Sleep(base::TimeDelta t);
+
   // base::SingleThreadTaskRunner implementation.
   virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
                                const base::Closure& task,
                                base::TimeDelta delay) OVERRIDE;
 
   virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
 
   // This function is currently not used, and will return false.
   virtual bool PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here,
       const base::Closure& task,
       base::TimeDelta delay) OVERRIDE;
 
  protected:
   virtual ~FakeSingleThreadTaskRunner();
 
  private:
   base::SimpleTestTickClock* const clock_;
   std::multimap<base::TimeTicks, PostedTask> tasks_;
+  bool fail_on_next_task_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSingleThreadTaskRunner);
 };
 
 }  // namespace test
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TEST_FAKE_TASK_RUNNER_H_