8e06419ee9
This makes the constructor and the unchecked create functions constexpr on the unit classes Timestamp, TimeDelta, Datarate and DataSize. This allows using the units in constexpr constants. Unchecked access methods are made constexpr as well. Making them usable in static asserts. Constexpr create functions for checked construction is added in a separate CL. Bug: webrtc:9574 Change-Id: I605ae2e8572195dbb2078c283056208be0f43333 Reviewed-on: https://webrtc-review.googlesource.com/91160 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24206}
112 lines
4.1 KiB
C++
112 lines
4.1 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "api/units/timestamp.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace test {
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TEST(TimestampTest, ConstExpr) {
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constexpr Timestamp kTimestampInf = Timestamp::Infinity();
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static_assert(kTimestampInf.IsInfinite(), "");
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}
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TEST(TimestampTest, GetBackSameValues) {
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const int64_t kValue = 499;
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EXPECT_EQ(Timestamp::ms(kValue).ms(), kValue);
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EXPECT_EQ(Timestamp::us(kValue).us(), kValue);
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EXPECT_EQ(Timestamp::seconds(kValue).seconds(), kValue);
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}
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TEST(TimestampTest, GetDifferentPrefix) {
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const int64_t kValue = 3000000;
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EXPECT_EQ(Timestamp::us(kValue).seconds(), kValue / 1000000);
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EXPECT_EQ(Timestamp::ms(kValue).seconds(), kValue / 1000);
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EXPECT_EQ(Timestamp::us(kValue).ms(), kValue / 1000);
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EXPECT_EQ(Timestamp::ms(kValue).us(), kValue * 1000);
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EXPECT_EQ(Timestamp::seconds(kValue).ms(), kValue * 1000);
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EXPECT_EQ(Timestamp::seconds(kValue).us(), kValue * 1000000);
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}
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TEST(TimestampTest, IdentityChecks) {
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const int64_t kValue = 3000;
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EXPECT_TRUE(Timestamp::Infinity().IsInfinite());
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EXPECT_FALSE(Timestamp::ms(kValue).IsInfinite());
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EXPECT_FALSE(Timestamp::Infinity().IsFinite());
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EXPECT_TRUE(Timestamp::ms(kValue).IsFinite());
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}
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TEST(TimestampTest, ComparisonOperators) {
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const int64_t kSmall = 450;
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const int64_t kLarge = 451;
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EXPECT_EQ(Timestamp::Infinity(), Timestamp::Infinity());
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EXPECT_GE(Timestamp::Infinity(), Timestamp::Infinity());
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EXPECT_GT(Timestamp::Infinity(), Timestamp::ms(kLarge));
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EXPECT_EQ(Timestamp::ms(kSmall), Timestamp::ms(kSmall));
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EXPECT_LE(Timestamp::ms(kSmall), Timestamp::ms(kSmall));
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EXPECT_GE(Timestamp::ms(kSmall), Timestamp::ms(kSmall));
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EXPECT_NE(Timestamp::ms(kSmall), Timestamp::ms(kLarge));
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EXPECT_LE(Timestamp::ms(kSmall), Timestamp::ms(kLarge));
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EXPECT_LT(Timestamp::ms(kSmall), Timestamp::ms(kLarge));
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EXPECT_GE(Timestamp::ms(kLarge), Timestamp::ms(kSmall));
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EXPECT_GT(Timestamp::ms(kLarge), Timestamp::ms(kSmall));
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}
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TEST(TimestampTest, CanBeInititializedFromLargeInt) {
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const int kMaxInt = std::numeric_limits<int>::max();
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EXPECT_EQ(Timestamp::seconds(kMaxInt).us(),
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static_cast<int64_t>(kMaxInt) * 1000000);
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EXPECT_EQ(Timestamp::ms(kMaxInt).us(), static_cast<int64_t>(kMaxInt) * 1000);
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}
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TEST(TimestampTest, ConvertsToAndFromDouble) {
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const int64_t kMicros = 17017;
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const double kMicrosDouble = kMicros;
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const double kMillisDouble = kMicros * 1e-3;
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const double kSecondsDouble = kMillisDouble * 1e-3;
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EXPECT_EQ(Timestamp::us(kMicros).seconds<double>(), kSecondsDouble);
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EXPECT_EQ(Timestamp::seconds(kSecondsDouble).us(), kMicros);
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EXPECT_EQ(Timestamp::us(kMicros).ms<double>(), kMillisDouble);
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EXPECT_EQ(Timestamp::ms(kMillisDouble).us(), kMicros);
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EXPECT_EQ(Timestamp::us(kMicros).us<double>(), kMicrosDouble);
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EXPECT_EQ(Timestamp::us(kMicrosDouble).us(), kMicros);
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const double kPlusInfinity = std::numeric_limits<double>::infinity();
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EXPECT_EQ(Timestamp::Infinity().seconds<double>(), kPlusInfinity);
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EXPECT_EQ(Timestamp::Infinity().ms<double>(), kPlusInfinity);
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EXPECT_EQ(Timestamp::Infinity().us<double>(), kPlusInfinity);
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EXPECT_TRUE(Timestamp::seconds(kPlusInfinity).IsInfinite());
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EXPECT_TRUE(Timestamp::ms(kPlusInfinity).IsInfinite());
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EXPECT_TRUE(Timestamp::us(kPlusInfinity).IsInfinite());
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}
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TEST(UnitConversionTest, TimestampAndTimeDeltaMath) {
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const int64_t kValueA = 267;
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const int64_t kValueB = 450;
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const Timestamp time_a = Timestamp::ms(kValueA);
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const Timestamp time_b = Timestamp::ms(kValueB);
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const TimeDelta delta_a = TimeDelta::ms(kValueA);
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EXPECT_EQ((time_a - time_b), TimeDelta::ms(kValueA - kValueB));
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EXPECT_EQ((time_b - delta_a), Timestamp::ms(kValueB - kValueA));
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EXPECT_EQ((time_b + delta_a), Timestamp::ms(kValueB + kValueA));
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}
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} // namespace test
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} // namespace webrtc
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