| // Copyright 2023 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include"gin/time_clamper.h" |
| |
| #include"base/time/time.h" |
| #include"build/build_config.h" |
| #include"testing/gtest/include/gtest/gtest.h" |
| |
| namespace gin{ |
| |
| TEST(TimeClamperTest,CurrentClockTimeMilliseconds){ |
| TimeClamper clamper(1); |
| EXPECT_EQ(0u, clamper.ClampToMillis(base::Time::UnixEpoch())); |
| |
| // 1 us after unix epoch should round to 0. |
| base::Time time= base::Time::UnixEpoch()+ base::Microseconds(1); |
| EXPECT_EQ(0u, clamper.ClampToMillis(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1)- |
| base::Microseconds(TimeClamper::kResolutionMicros-1); |
| EXPECT_EQ(0u, clamper.ClampToMillis(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1); |
| EXPECT_EQ(1u, clamper.ClampToMillis(time)); |
| } |
| |
| #if !BUILDFLAG(IS_ANDROID) |
| TEST(TimeClamperTest,CurrentClockTimeMillisecondsThreshold){ |
| // This test assumes a time clamp of 5. If the clamp changes the time values |
| // will need to be adjusted. |
| ASSERT_EQ(5,TimeClamper::kResolutionMicros); |
| TimeClamper clamper(1); |
| base::Time time= base::Time::UnixEpoch()+ base::Milliseconds(1)- |
| base::Microseconds(TimeClamper::kResolutionMicros); |
| EXPECT_EQ(0u, clamper.ClampToMillis(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1)- |
| base::Microseconds(TimeClamper::kResolutionMicros)+ |
| base::Microseconds(1); |
| EXPECT_EQ(0u, clamper.ClampToMillis(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1)- |
| base::Microseconds(TimeClamper::kResolutionMicros)+ |
| base::Microseconds(2); |
| EXPECT_EQ(1u, clamper.ClampToMillis(time)); |
| } |
| |
| TEST(TimeClamperTest,CurrentClockTimeMillisecondsThresholdNegative){ |
| // This test assumes a time clamp of 5. If the clamp changes the time values |
| // will need to be adjusted. |
| // be adjusted. |
| ASSERT_EQ(5,TimeClamper::kResolutionMicros); |
| TimeClamper clamper(1); |
| base::Time time= base::Time::UnixEpoch()+ base::Milliseconds(-1)+ |
| base::Microseconds(TimeClamper::kResolutionMicros); |
| EXPECT_EQ(0u, clamper.ClampToMillis(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(-1)+ |
| base::Microseconds(TimeClamper::kResolutionMicros)- |
| base::Microseconds(1); |
| EXPECT_EQ(0u, clamper.ClampToMillis(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(-1)+ |
| base::Microseconds(TimeClamper::kResolutionMicros)- |
| base::Microseconds(2); |
| EXPECT_EQ(static_cast<int64_t>(-1), clamper.ClampToMillis(time)); |
| } |
| |
| TEST(TimeClamperTest,CurrentClockTimeMillisecondsHighResolution){ |
| TimeClamper clamper(1); |
| EXPECT_EQ(0, clamper.ClampToMillisHighResolution(base::Time::UnixEpoch())); |
| |
| base::Time time= base::Time::UnixEpoch()+ base::Microseconds(1); |
| EXPECT_EQ(0, clamper.ClampToMillisHighResolution(time)); |
| |
| time= base::Time::UnixEpoch()+ |
| base::Microseconds(TimeClamper::kResolutionMicros); |
| EXPECT_EQ(0.005, clamper.ClampToMillisHighResolution(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1)- |
| base::Microseconds(TimeClamper::kResolutionMicros-1); |
| EXPECT_EQ(0.995, clamper.ClampToMillisHighResolution(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1)- |
| base::Microseconds(TimeClamper::kResolutionMicros-3); |
| EXPECT_EQ(1, clamper.ClampToMillisHighResolution(time)); |
| |
| time= base::Time::UnixEpoch()+ base::Milliseconds(1); |
| EXPECT_EQ(1, clamper.ClampToMillisHighResolution(time)); |
| |
| time= |
| base::Time::UnixEpoch()+ base::Milliseconds(1)+ base::Microseconds(1); |
| EXPECT_EQ(1.005, clamper.ClampToMillisHighResolution(time)); |
| } |
| #endif |
| |
| }// namespace gin |
