components/component_updater/timer_unittest.cc

   1 // Copyright 2015 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 <string>
   6
   7 #include "base/message_loop/message_loop.h"
   8 #include "base/run_loop.h"
   9 #include "base/time/time.h"
  10 #include "components/component_updater/timer.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 using std::string;
  14
  15 namespace component_updater {
  16
  17 class ComponentUpdaterTimerTest : public testing::Test {
  18  public:
  19   ComponentUpdaterTimerTest() {}
  20   ~ComponentUpdaterTimerTest() override {}
  21
  22  private:
  23   base::MessageLoopForUI message_loop_;
  24 };
  25
  26 TEST_F(ComponentUpdaterTimerTest, Start) {
  27   class TimerClientFake {
  28    public:
  29     TimerClientFake(int max_count, const base::Closure& quit_closure)
  30         : max_count_(max_count), quit_closure_(quit_closure), count_(0) {}
  31
  32     void OnTimerEvent() {
  33       ++count_;
  34       if (count_ >= max_count_)
  35         quit_closure_.Run();
  36     }
  37
  38     int count() const { return count_; }
  39
  40    private:
  41     const int max_count_;
  42     const base::Closure quit_closure_;
  43
  44     int count_;
  45   };
  46
  47   base::RunLoop run_loop;
  48   TimerClientFake timer_client_fake(3, run_loop.QuitClosure());
  49   EXPECT_EQ(0, timer_client_fake.count());
  50
  51   Timer timer;
  52   const base::TimeDelta delay(base::TimeDelta::FromMilliseconds(1));
  53   timer.Start(delay, delay, base::Bind(&TimerClientFake::OnTimerEvent,
  54                                        base::Unretained(&timer_client_fake)));
  55   run_loop.Run();
  56   timer.Stop();
  57
  58   EXPECT_EQ(3, timer_client_fake.count());
  59 }
  60
  61 }  // namespace component_updater