| // Copyright (c) 2012 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. |
| |
| #include "net/third_party/quic/platform/impl/quic_epoll_clock.h" |
| |
| #include "net/third_party/quic/platform/api/quic_flags.h" |
| #include "net/third_party/quic/platform/api/quic_test.h" |
| #include "net/tools/epoll_server/fake_epoll_server.h" |
| |
| namespace quic { |
| namespace test { |
| |
| class QuicEpollClockTest : public QuicTest {}; |
| |
| TEST_F(QuicEpollClockTest, ApproximateNowInUsec) { |
| FakeEpollServer epoll_server; |
| QuicEpollClock clock(&epoll_server); |
| |
| epoll_server.set_now_in_usec(1000000); |
| EXPECT_EQ(1000000, |
| (clock.ApproximateNow() - QuicTime::Zero()).ToMicroseconds()); |
| EXPECT_EQ(1u, clock.WallNow().ToUNIXSeconds()); |
| EXPECT_EQ(1000000u, clock.WallNow().ToUNIXMicroseconds()); |
| |
| epoll_server.AdvanceBy(5); |
| EXPECT_EQ(1000005, |
| (clock.ApproximateNow() - QuicTime::Zero()).ToMicroseconds()); |
| EXPECT_EQ(1u, clock.WallNow().ToUNIXSeconds()); |
| EXPECT_EQ(1000005u, clock.WallNow().ToUNIXMicroseconds()); |
| |
| epoll_server.AdvanceBy(10 * 1000000); |
| EXPECT_EQ(11u, clock.WallNow().ToUNIXSeconds()); |
| EXPECT_EQ(11000005u, clock.WallNow().ToUNIXMicroseconds()); |
| } |
| |
| TEST_F(QuicEpollClockTest, NowInUsec) { |
| FakeEpollServer epoll_server; |
| QuicEpollClock clock(&epoll_server); |
| |
| epoll_server.set_now_in_usec(1000000); |
| EXPECT_EQ(1000000, (clock.Now() - QuicTime::Zero()).ToMicroseconds()); |
| |
| epoll_server.AdvanceBy(5); |
| EXPECT_EQ(1000005, (clock.Now() - QuicTime::Zero()).ToMicroseconds()); |
| } |
| |
| TEST_F(QuicEpollClockTest, MonotonicityWithRealEpollClock) { |
| SetQuicReloadableFlag(quic_monotonic_epoll_clock, true); |
| net::EpollServer epoll_server; |
| QuicEpollClock clock(&epoll_server); |
| |
| quic::QuicTime last_now = clock.Now(); |
| for (int i = 0; i < 1e5; ++i) { |
| quic::QuicTime now = clock.Now(); |
| |
| ASSERT_LE(last_now, now); |
| |
| last_now = now; |
| } |
| } |
| |
| TEST_F(QuicEpollClockTest, MonotonicityWithFakeEpollClock) { |
| FakeEpollServer epoll_server; |
| QuicEpollClock clock(&epoll_server); |
| |
| epoll_server.set_now_in_usec(100); |
| quic::QuicTime last_now = clock.Now(); |
| |
| epoll_server.set_now_in_usec(90); |
| quic::QuicTime now = clock.Now(); |
| |
| if (GetQuicReloadableFlag(quic_monotonic_epoll_clock)) { |
| ASSERT_EQ(last_now, now); |
| } else { |
| ASSERT_GT(last_now, now); |
| } |
| } |
| |
| } // namespace test |
| } // namespace quic |