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}
100 lines
3.3 KiB
C++
100 lines
3.3 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/data_size.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(DataSizeTest, ConstExpr) {
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constexpr DataSize kDataSizeZero = DataSize::Zero();
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constexpr DataSize kDataSizeInf = DataSize::Infinity();
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static_assert(kDataSizeZero.IsZero(), "");
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static_assert(kDataSizeInf.IsInfinite(), "");
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}
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TEST(DataSizeTest, GetBackSameValues) {
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const int64_t kValue = 123 * 8;
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EXPECT_EQ(DataSize::bytes(kValue).bytes(), kValue);
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}
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TEST(DataSizeTest, IdentityChecks) {
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const int64_t kValue = 3000;
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EXPECT_TRUE(DataSize::Zero().IsZero());
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EXPECT_FALSE(DataSize::bytes(kValue).IsZero());
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EXPECT_TRUE(DataSize::Infinity().IsInfinite());
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EXPECT_FALSE(DataSize::Zero().IsInfinite());
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EXPECT_FALSE(DataSize::bytes(kValue).IsInfinite());
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EXPECT_FALSE(DataSize::Infinity().IsFinite());
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EXPECT_TRUE(DataSize::bytes(kValue).IsFinite());
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EXPECT_TRUE(DataSize::Zero().IsFinite());
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}
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TEST(DataSizeTest, ComparisonOperators) {
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const int64_t kSmall = 450;
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const int64_t kLarge = 451;
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const DataSize small = DataSize::bytes(kSmall);
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const DataSize large = DataSize::bytes(kLarge);
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EXPECT_EQ(DataSize::Zero(), DataSize::bytes(0));
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EXPECT_EQ(DataSize::Infinity(), DataSize::Infinity());
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EXPECT_EQ(small, small);
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EXPECT_LE(small, small);
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EXPECT_GE(small, small);
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EXPECT_NE(small, large);
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EXPECT_LE(small, large);
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EXPECT_LT(small, large);
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EXPECT_GE(large, small);
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EXPECT_GT(large, small);
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EXPECT_LT(DataSize::Zero(), small);
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EXPECT_GT(DataSize::Infinity(), large);
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}
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TEST(DataSizeTest, ConvertsToAndFromDouble) {
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const int64_t kValue = 128;
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const double kDoubleValue = static_cast<double>(kValue);
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EXPECT_EQ(DataSize::bytes(kValue).bytes<double>(), kDoubleValue);
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EXPECT_EQ(DataSize::bytes(kDoubleValue).bytes(), kValue);
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const double kInfinity = std::numeric_limits<double>::infinity();
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EXPECT_EQ(DataSize::Infinity().bytes<double>(), kInfinity);
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EXPECT_TRUE(DataSize::bytes(kInfinity).IsInfinite());
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}
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TEST(DataSizeTest, MathOperations) {
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const int64_t kValueA = 450;
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const int64_t kValueB = 267;
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const DataSize size_a = DataSize::bytes(kValueA);
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const DataSize size_b = DataSize::bytes(kValueB);
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EXPECT_EQ((size_a + size_b).bytes(), kValueA + kValueB);
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EXPECT_EQ((size_a - size_b).bytes(), kValueA - kValueB);
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const int32_t kInt32Value = 123;
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const double kFloatValue = 123.0;
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EXPECT_EQ((size_a * kValueB).bytes(), kValueA * kValueB);
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EXPECT_EQ((size_a * kInt32Value).bytes(), kValueA * kInt32Value);
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EXPECT_EQ((size_a * kFloatValue).bytes(), kValueA * kFloatValue);
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EXPECT_EQ((size_a / 10).bytes(), kValueA / 10);
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EXPECT_EQ(size_a / size_b, static_cast<double>(kValueA) / kValueB);
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DataSize mutable_size = DataSize::bytes(kValueA);
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mutable_size += size_b;
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EXPECT_EQ(mutable_size.bytes(), kValueA + kValueB);
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mutable_size -= size_a;
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EXPECT_EQ(mutable_size.bytes(), kValueB);
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}
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} // namespace test
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} // namespace webrtc
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