cc/test/test_now_source.h

   1 // Copyright 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 #ifndef CC_TEST_TEST_NOW_SOURCE_H_
   6 #define CC_TEST_TEST_NOW_SOURCE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/logging.h"
  12 #include "base/trace_event/trace_event.h"
  13 #include "base/trace_event/trace_event_argument.h"
  14
  15 namespace cc {
  16
  17 class TestNowSource : public base::RefCounted<TestNowSource> {
  18  public:
  19   static scoped_refptr<TestNowSource> Create();
  20   static scoped_refptr<TestNowSource> Create(int64_t initial);
  21   static scoped_refptr<TestNowSource> Create(base::TimeTicks initial);
  22
  23   virtual void Reset();
  24   virtual base::TimeTicks Now() const;
  25   virtual void SetNow(base::TimeTicks time);
  26   virtual void AdvanceNow(base::TimeDelta period);
  27
  28   // Convenience functions to make it the now source easier to use in unit
  29   // tests.
  30   void AdvanceNowMicroseconds(int64_t period_in_microseconds);
  31   void SetNowMicroseconds(int64_t time_in_microseconds);
  32
  33   static const base::TimeTicks kAbsoluteMaxNow;
  34
  35   // Tracing functions
  36   scoped_refptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
  37   void AsValueInto(base::trace_event::TracedValue* state) const;
  38   std::string ToString() const;
  39
  40  protected:
  41   TestNowSource();
  42   explicit TestNowSource(int64_t initial);
  43   explicit TestNowSource(base::TimeTicks initial);
  44
  45   base::TimeTicks initial_;
  46   base::TimeTicks now_;
  47
  48  private:
  49   friend class base::RefCounted<TestNowSource>;
  50   virtual ~TestNowSource();
  51 };
  52
  53 // gtest pretty printing functions
  54 void PrintTo(const scoped_refptr<TestNowSource>& src, ::std::ostream* os);
  55 ::std::ostream& operator<<(::std::ostream& os,
  56                            const scoped_refptr<TestNowSource>& src);
  57
  58 }  // namespace cc
  59
  60 #endif  // CC_TEST_TEST_NOW_SOURCE_H_