blob: 929b42aaf834c033e518f3d53d8514d06b6dc2a8 [file] [log] [blame] [edit]
// Copyright 2013 The Flutter 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 <thread>
#include "flutter/fml/time/chrono_timestamp_provider.h"
#include "flutter/fml/time/time_delta.h"
#include "gtest/gtest.h"
namespace fml {
namespace {
TEST(Time, Now) {
auto start = ChronoTicksSinceEpoch();
for (int i = 0; i < 3; ++i) {
auto now = ChronoTicksSinceEpoch();
EXPECT_GE(now, start);
std::this_thread::yield();
}
}
TEST(Time, IntConversions) {
// Integer conversions should all truncate, not round.
TimeDelta delta = TimeDelta::FromNanoseconds(102304506708ll);
EXPECT_EQ(102304506708ll, delta.ToNanoseconds());
EXPECT_EQ(102304506ll, delta.ToMicroseconds());
EXPECT_EQ(102304ll, delta.ToMilliseconds());
EXPECT_EQ(102ll, delta.ToSeconds());
}
TEST(Time, FloatConversions) {
// Float conversions should remain close to the original value.
TimeDelta delta = TimeDelta::FromNanoseconds(102304506708ll);
EXPECT_FLOAT_EQ(102304506708.0, delta.ToNanosecondsF());
EXPECT_FLOAT_EQ(102304506.708, delta.ToMicrosecondsF());
EXPECT_FLOAT_EQ(102304.506708, delta.ToMillisecondsF());
EXPECT_FLOAT_EQ(102.304506708, delta.ToSecondsF());
}
TEST(Time, TimespecConversions) {
struct timespec ts;
ts.tv_sec = 5;
ts.tv_nsec = 7;
TimeDelta from_timespec = TimeDelta::FromTimespec(ts);
EXPECT_EQ(5, from_timespec.ToSeconds());
EXPECT_EQ(5 * 1000000000ll + 7, from_timespec.ToNanoseconds());
struct timespec to_timespec = from_timespec.ToTimespec();
EXPECT_EQ(ts.tv_sec, to_timespec.tv_sec);
EXPECT_EQ(ts.tv_nsec, to_timespec.tv_nsec);
}
} // namespace
} // namespace fml