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55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <thread>
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#include "flutter/fml/time/time_delta.h"
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#include "flutter/fml/time/time_point.h"
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#include "gtest/gtest.h"
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namespace fml {
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namespace {
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TEST(Time, Now) {
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auto start = TimePoint::Now();
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for (int i = 0; i < 3; ++i) {
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auto now = TimePoint::Now();
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EXPECT_GE(now, start);
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std::this_thread::yield();
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}
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}
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TEST(Time, IntConversions) {
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// Integer conversions should all truncate, not round.
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TimeDelta delta = TimeDelta::FromNanoseconds(102304506708ll);
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EXPECT_EQ(102304506708ll, delta.ToNanoseconds());
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EXPECT_EQ(102304506ll, delta.ToMicroseconds());
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EXPECT_EQ(102304ll, delta.ToMilliseconds());
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EXPECT_EQ(102ll, delta.ToSeconds());
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}
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TEST(Time, FloatConversions) {
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// Float conversions should remain close to the original value.
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TimeDelta delta = TimeDelta::FromNanoseconds(102304506708ll);
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EXPECT_FLOAT_EQ(102304506708.0, delta.ToNanosecondsF());
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EXPECT_FLOAT_EQ(102304506.708, delta.ToMicrosecondsF());
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EXPECT_FLOAT_EQ(102304.506708, delta.ToMillisecondsF());
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EXPECT_FLOAT_EQ(102.304506708, delta.ToSecondsF());
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}
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TEST(Time, TimespecConversions) {
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struct timespec ts;
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ts.tv_sec = 5;
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ts.tv_nsec = 7;
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TimeDelta from_timespec = TimeDelta::FromTimespec(ts);
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EXPECT_EQ(5, from_timespec.ToSeconds());
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EXPECT_EQ(5 * 1000000000ll + 7, from_timespec.ToNanoseconds());
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struct timespec to_timespec = from_timespec.ToTimespec();
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EXPECT_EQ(ts.tv_sec, to_timespec.tv_sec);
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EXPECT_EQ(ts.tv_nsec, to_timespec.tv_nsec);
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}
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} // namespace
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} // namespace fml
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