1 // Copyright 2012 The Chromium Authors
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/quic/quic_clock_skew_detector.h"
6
7 #include "base/time/time.h"
8 #include "net/third_party/quiche/src/quiche/quic/test_tools/mock_clock.h"
9 #include "net/third_party/quiche/src/quiche/quic/test_tools/mock_random.h"
10 #include "testing/gtest/include/gtest/gtest.h"
11
12 namespace net::test {
13 namespace {
14
15 class QuicClockSkewDetectorTest : public ::testing::Test {
16 protected:
QuicClockSkewDetectorTest()17 QuicClockSkewDetectorTest()
18 : start_ticks_time_(base::TimeTicks::Now()),
19 start_wall_time_(base::Time::Now()),
20 detector_(start_ticks_time_, start_wall_time_) {}
21
22 base::TimeTicks start_ticks_time_;
23 base::Time start_wall_time_;
24 QuicClockSkewDetector detector_;
25 };
26
TEST_F(QuicClockSkewDetectorTest,NoChange)27 TEST_F(QuicClockSkewDetectorTest, NoChange) {
28 EXPECT_FALSE(
29 detector_.ClockSkewDetected(start_ticks_time_, start_wall_time_));
30 }
31
TEST_F(QuicClockSkewDetectorTest,NoOffset)32 TEST_F(QuicClockSkewDetectorTest, NoOffset) {
33 base::TimeDelta delta = base::Seconds(57);
34 EXPECT_FALSE(detector_.ClockSkewDetected(start_ticks_time_ + delta,
35 start_wall_time_ + delta));
36 }
37
TEST_F(QuicClockSkewDetectorTest,SmallOffset)38 TEST_F(QuicClockSkewDetectorTest, SmallOffset) {
39 base::TimeDelta delta = base::Milliseconds(57);
40 EXPECT_FALSE(
41 detector_.ClockSkewDetected(start_ticks_time_, start_wall_time_ + delta));
42 }
43
TEST_F(QuicClockSkewDetectorTest,ManySmallOffset)44 TEST_F(QuicClockSkewDetectorTest, ManySmallOffset) {
45 for (int i = 0; i < 10; ++i) {
46 base::TimeDelta delta = base::Milliseconds(500);
47 EXPECT_FALSE(detector_.ClockSkewDetected(start_ticks_time_,
48 start_wall_time_ + i * delta));
49 }
50 }
51
TEST_F(QuicClockSkewDetectorTest,LargeOffset)52 TEST_F(QuicClockSkewDetectorTest, LargeOffset) {
53 base::TimeDelta delta = base::Milliseconds(1001);
54 EXPECT_TRUE(
55 detector_.ClockSkewDetected(start_ticks_time_, start_wall_time_ + delta));
56 }
57
TEST_F(QuicClockSkewDetectorTest,LargeOffsetThenSmallOffset)58 TEST_F(QuicClockSkewDetectorTest, LargeOffsetThenSmallOffset) {
59 base::TimeDelta delta = base::Milliseconds(1001);
60 EXPECT_TRUE(
61 detector_.ClockSkewDetected(start_ticks_time_, start_wall_time_ + delta));
62 base::TimeDelta small_delta = base::Milliseconds(571001);
63 EXPECT_FALSE(detector_.ClockSkewDetected(
64 start_ticks_time_ + small_delta, start_wall_time_ + delta + small_delta));
65 }
66
67 } // namespace
68 } // namespace net::test
69