net/tools/quic/quic_epoll_connection_helper_test.cc

   1 // Copyright (c) 2012 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 "net/tools/quic/quic_epoll_connection_helper.h"
   6
   7 #include "net/quic/crypto/quic_random.h"
   8 #include "net/tools/quic/test_tools/mock_epoll_server.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10
  11 using net::tools::test::MockEpollServer;
  12
  13 namespace net {
  14 namespace tools {
  15 namespace test {
  16 namespace {
  17
  18 class TestDelegate : public QuicAlarm::Delegate {
  19  public:
  20   TestDelegate() : fired_(false) {}
  21
  22   virtual QuicTime OnAlarm() override {
  23     fired_ = true;
  24     return QuicTime::Zero();
  25   }
  26
  27   bool fired() const { return fired_; }
  28
  29  private:
  30   bool fired_;
  31 };
  32
  33 class QuicEpollConnectionHelperTest : public ::testing::Test {
  34  protected:
  35   QuicEpollConnectionHelperTest() : helper_(&epoll_server_) {}
  36
  37   MockEpollServer epoll_server_;
  38   QuicEpollConnectionHelper helper_;
  39 };
  40
  41 TEST_F(QuicEpollConnectionHelperTest, GetClock) {
  42   const QuicClock* clock = helper_.GetClock();
  43   QuicTime start = clock->Now();
  44
  45   QuicTime::Delta delta = QuicTime::Delta::FromMilliseconds(5);
  46   epoll_server_.AdvanceBy(delta.ToMicroseconds());
  47
  48   EXPECT_EQ(start.Add(delta), clock->Now());
  49 }
  50
  51 TEST_F(QuicEpollConnectionHelperTest, GetRandomGenerator) {
  52   QuicRandom* random = helper_.GetRandomGenerator();
  53   EXPECT_EQ(QuicRandom::GetInstance(), random);
  54 }
  55
  56 TEST_F(QuicEpollConnectionHelperTest, CreateAlarm) {
  57   TestDelegate* delegate = new TestDelegate();
  58   scoped_ptr<QuicAlarm> alarm(helper_.CreateAlarm(delegate));
  59
  60   const QuicClock* clock = helper_.GetClock();
  61   QuicTime start = clock->Now();
  62   QuicTime::Delta delta = QuicTime::Delta::FromMicroseconds(1);
  63   alarm->Set(start.Add(delta));
  64
  65   epoll_server_.AdvanceByAndCallCallbacks(delta.ToMicroseconds());
  66   EXPECT_EQ(start.Add(delta), clock->Now());
  67 }
  68
  69 TEST_F(QuicEpollConnectionHelperTest, CreateAlarmAndCancel) {
  70   TestDelegate* delegate = new TestDelegate();
  71   scoped_ptr<QuicAlarm> alarm(helper_.CreateAlarm(delegate));
  72
  73   const QuicClock* clock = helper_.GetClock();
  74   QuicTime start = clock->Now();
  75   QuicTime::Delta delta = QuicTime::Delta::FromMicroseconds(1);
  76   alarm->Set(start.Add(delta));
  77   alarm->Cancel();
  78
  79   epoll_server_.AdvanceByExactlyAndCallCallbacks(delta.ToMicroseconds());
  80   EXPECT_EQ(start.Add(delta), clock->Now());
  81   EXPECT_FALSE(delegate->fired());
  82 }
  83
  84 TEST_F(QuicEpollConnectionHelperTest, CreateAlarmAndReset) {
  85   TestDelegate* delegate = new TestDelegate();
  86   scoped_ptr<QuicAlarm> alarm(helper_.CreateAlarm(delegate));
  87
  88   const QuicClock* clock = helper_.GetClock();
  89   QuicTime start = clock->Now();
  90   QuicTime::Delta delta = QuicTime::Delta::FromMicroseconds(1);
  91   alarm->Set(clock->Now().Add(delta));
  92   alarm->Cancel();
  93   QuicTime::Delta new_delta = QuicTime::Delta::FromMicroseconds(3);
  94   alarm->Set(clock->Now().Add(new_delta));
  95
  96   epoll_server_.AdvanceByExactlyAndCallCallbacks(delta.ToMicroseconds());
  97   EXPECT_EQ(start.Add(delta), clock->Now());
  98   EXPECT_FALSE(delegate->fired());
  99
 100   epoll_server_.AdvanceByExactlyAndCallCallbacks(
 101       new_delta.Subtract(delta).ToMicroseconds());
 102   EXPECT_EQ(start.Add(new_delta), clock->Now());
 103   EXPECT_TRUE(delegate->fired());
 104 }
 105
 106 TEST_F(QuicEpollConnectionHelperTest, CreateAlarmAndUpdate) {
 107   TestDelegate* delegate = new TestDelegate();
 108   scoped_ptr<QuicAlarm> alarm(helper_.CreateAlarm(delegate));
 109
 110   const QuicClock* clock = helper_.GetClock();
 111   QuicTime start = clock->Now();
 112   QuicTime::Delta delta = QuicTime::Delta::FromMicroseconds(1);
 113   alarm->Set(clock->Now().Add(delta));
 114   QuicTime::Delta new_delta = QuicTime::Delta::FromMicroseconds(3);
 115   alarm->Update(clock->Now().Add(new_delta),
 116                 QuicTime::Delta::FromMicroseconds(1));
 117
 118   epoll_server_.AdvanceByExactlyAndCallCallbacks(delta.ToMicroseconds());
 119   EXPECT_EQ(start.Add(delta), clock->Now());
 120   EXPECT_FALSE(delegate->fired());
 121
 122   // Move the alarm forward 1us and ensure it doesn't move forward.
 123   alarm->Update(clock->Now().Add(new_delta),
 124                 QuicTime::Delta::FromMicroseconds(2));
 125
 126   epoll_server_.AdvanceByExactlyAndCallCallbacks(
 127       new_delta.Subtract(delta).ToMicroseconds());
 128   EXPECT_EQ(start.Add(new_delta), clock->Now());
 129   EXPECT_TRUE(delegate->fired());
 130
 131   // Set the alarm via an update call.
 132   new_delta = QuicTime::Delta::FromMicroseconds(5);
 133   alarm->Update(clock->Now().Add(new_delta),
 134                 QuicTime::Delta::FromMicroseconds(1));
 135   EXPECT_TRUE(alarm->IsSet());
 136
 137   // Update it with an uninitialized time and ensure it's cancelled.
 138   alarm->Update(QuicTime::Zero(), QuicTime::Delta::FromMicroseconds(1));
 139   EXPECT_FALSE(alarm->IsSet());
 140 }
 141
 142 }  // namespace
 143 }  // namespace test
 144 }  // namespace tools
 145 }  // namespace net