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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/base/common.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/thread.h"
#include "webrtc/base/timeutils.h"
namespace rtc {
TEST(TimeTest, TimeInMs) {
uint32_t ts_earlier = Time();
Thread::SleepMs(100);
uint32_t ts_now = Time();
// Allow for the thread to wakeup ~20ms early.
EXPECT_GE(ts_now, ts_earlier + 80);
// Make sure the Time is not returning in smaller unit like microseconds.
EXPECT_LT(ts_now, ts_earlier + 1000);
}
TEST(TimeTest, Comparison) {
// Obtain two different times, in known order
TimeStamp ts_earlier = Time();
Thread::SleepMs(100);
TimeStamp ts_now = Time();
EXPECT_NE(ts_earlier, ts_now);
// Common comparisons
EXPECT_TRUE( TimeIsLaterOrEqual(ts_earlier, ts_now));
EXPECT_TRUE( TimeIsLater( ts_earlier, ts_now));
EXPECT_FALSE(TimeIsLaterOrEqual(ts_now, ts_earlier));
EXPECT_FALSE(TimeIsLater( ts_now, ts_earlier));
// Edge cases
EXPECT_TRUE( TimeIsLaterOrEqual(ts_earlier, ts_earlier));
EXPECT_FALSE(TimeIsLater( ts_earlier, ts_earlier));
// Obtain a third time
TimeStamp ts_later = TimeAfter(100);
EXPECT_NE(ts_now, ts_later);
EXPECT_TRUE( TimeIsLater(ts_now, ts_later));
EXPECT_TRUE( TimeIsLater(ts_earlier, ts_later));
// Common comparisons
EXPECT_TRUE( TimeIsBetween(ts_earlier, ts_now, ts_later));
EXPECT_FALSE(TimeIsBetween(ts_earlier, ts_later, ts_now));
EXPECT_FALSE(TimeIsBetween(ts_now, ts_earlier, ts_later));
EXPECT_TRUE( TimeIsBetween(ts_now, ts_later, ts_earlier));
EXPECT_TRUE( TimeIsBetween(ts_later, ts_earlier, ts_now));
EXPECT_FALSE(TimeIsBetween(ts_later, ts_now, ts_earlier));
// Edge cases
EXPECT_TRUE( TimeIsBetween(ts_earlier, ts_earlier, ts_earlier));
EXPECT_TRUE( TimeIsBetween(ts_earlier, ts_earlier, ts_later));
EXPECT_TRUE( TimeIsBetween(ts_earlier, ts_later, ts_later));
// Earlier of two times
EXPECT_EQ(ts_earlier, TimeMin(ts_earlier, ts_earlier));
EXPECT_EQ(ts_earlier, TimeMin(ts_earlier, ts_now));
EXPECT_EQ(ts_earlier, TimeMin(ts_earlier, ts_later));
EXPECT_EQ(ts_earlier, TimeMin(ts_now, ts_earlier));
EXPECT_EQ(ts_earlier, TimeMin(ts_later, ts_earlier));
// Later of two times
EXPECT_EQ(ts_earlier, TimeMax(ts_earlier, ts_earlier));
EXPECT_EQ(ts_now, TimeMax(ts_earlier, ts_now));
EXPECT_EQ(ts_later, TimeMax(ts_earlier, ts_later));
EXPECT_EQ(ts_now, TimeMax(ts_now, ts_earlier));
EXPECT_EQ(ts_later, TimeMax(ts_later, ts_earlier));
}
TEST(TimeTest, Intervals) {
TimeStamp ts_earlier = Time();
TimeStamp ts_later = TimeAfter(500);
// We can't depend on ts_later and ts_earlier to be exactly 500 apart
// since time elapses between the calls to Time() and TimeAfter(500)
EXPECT_LE(500, TimeDiff(ts_later, ts_earlier));
EXPECT_GE(-500, TimeDiff(ts_earlier, ts_later));
// Time has elapsed since ts_earlier
EXPECT_GE(TimeSince(ts_earlier), 0);
// ts_earlier is earlier than now, so TimeUntil ts_earlier is -ve
EXPECT_LE(TimeUntil(ts_earlier), 0);
// ts_later likely hasn't happened yet, so TimeSince could be -ve
// but within 500
EXPECT_GE(TimeSince(ts_later), -500);
// TimeUntil ts_later is at most 500
EXPECT_LE(TimeUntil(ts_later), 500);
}
TEST(TimeTest, BoundaryComparison) {
// Obtain two different times, in known order
TimeStamp ts_earlier = static_cast<TimeStamp>(-50);
TimeStamp ts_later = ts_earlier + 100;
EXPECT_NE(ts_earlier, ts_later);
// Common comparisons
EXPECT_TRUE( TimeIsLaterOrEqual(ts_earlier, ts_later));
EXPECT_TRUE( TimeIsLater( ts_earlier, ts_later));
EXPECT_FALSE(TimeIsLaterOrEqual(ts_later, ts_earlier));
EXPECT_FALSE(TimeIsLater( ts_later, ts_earlier));
// Earlier of two times
EXPECT_EQ(ts_earlier, TimeMin(ts_earlier, ts_earlier));
EXPECT_EQ(ts_earlier, TimeMin(ts_earlier, ts_later));
EXPECT_EQ(ts_earlier, TimeMin(ts_later, ts_earlier));
// Later of two times
EXPECT_EQ(ts_earlier, TimeMax(ts_earlier, ts_earlier));
EXPECT_EQ(ts_later, TimeMax(ts_earlier, ts_later));
EXPECT_EQ(ts_later, TimeMax(ts_later, ts_earlier));
// Interval
EXPECT_EQ(100, TimeDiff(ts_later, ts_earlier));
EXPECT_EQ(-100, TimeDiff(ts_earlier, ts_later));
}
TEST(TimeTest, DISABLED_CurrentTmTime) {
struct tm tm;
int microseconds;
time_t before = ::time(NULL);
CurrentTmTime(&tm, µseconds);
time_t after = ::time(NULL);
// Assert that 'tm' represents a time between 'before' and 'after'.
// mktime() uses local time, so we have to compensate for that.
time_t local_delta = before - ::mktime(::gmtime(&before)); // NOLINT
time_t t = ::mktime(&tm) + local_delta;
EXPECT_TRUE(before <= t && t <= after);
EXPECT_TRUE(0 <= microseconds && microseconds < 1000000);
}
class TimestampWrapAroundHandlerTest : public testing::Test {
public:
TimestampWrapAroundHandlerTest() {}
protected:
TimestampWrapAroundHandler wraparound_handler_;
};
TEST_F(TimestampWrapAroundHandlerTest, Unwrap) {
uint32_t ts = 0xfffffff2;
int64_t unwrapped_ts = ts;
EXPECT_EQ(ts, wraparound_handler_.Unwrap(ts));
ts = 2;
unwrapped_ts += 0x10;
EXPECT_EQ(unwrapped_ts, wraparound_handler_.Unwrap(ts));
ts = 0xfffffff2;
unwrapped_ts += 0xfffffff0;
EXPECT_EQ(unwrapped_ts, wraparound_handler_.Unwrap(ts));
ts = 0;
unwrapped_ts += 0xe;
EXPECT_EQ(unwrapped_ts, wraparound_handler_.Unwrap(ts));
}
} // namespace rtc
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