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/*
* Copyright (c) 2018 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 "api/units/data_size.h"
#include <cstdint>
#include <limits>
#include "test/gtest.h"
namespace webrtc {
namespace test {
TEST(DataSizeTest, ConstExpr) {
constexpr int64_t kValue = 12345;
constexpr DataSize kDataSizeZero = DataSize::Zero();
constexpr DataSize kDataSizeInf = DataSize::Infinity();
static_assert(DataSize() == kDataSizeZero);
static_assert(kDataSizeZero.IsZero(), "");
static_assert(kDataSizeInf.IsInfinite(), "");
static_assert(kDataSizeInf.bytes_or(-1) == -1, "");
static_assert(kDataSizeInf > kDataSizeZero, "");
constexpr DataSize kDataSize = DataSize::Bytes(kValue);
static_assert(kDataSize.bytes_or(-1) == kValue, "");
EXPECT_EQ(kDataSize.bytes(), kValue);
}
TEST(DataSizeTest, GetBackSameValues) {
const int64_t kValue = 123 * 8;
EXPECT_EQ(DataSize::Bytes(kValue).bytes(), kValue);
}
TEST(DataSizeTest, IdentityChecks) {
const int64_t kValue = 3000;
EXPECT_TRUE(DataSize::Zero().IsZero());
EXPECT_FALSE(DataSize::Bytes(kValue).IsZero());
EXPECT_TRUE(DataSize::Infinity().IsInfinite());
EXPECT_FALSE(DataSize::Zero().IsInfinite());
EXPECT_FALSE(DataSize::Bytes(kValue).IsInfinite());
EXPECT_FALSE(DataSize::Infinity().IsFinite());
EXPECT_TRUE(DataSize::Bytes(kValue).IsFinite());
EXPECT_TRUE(DataSize::Zero().IsFinite());
}
TEST(DataSizeTest, ComparisonOperators) {
const int64_t kSmall = 450;
const int64_t kLarge = 451;
const DataSize small = DataSize::Bytes(kSmall);
const DataSize large = DataSize::Bytes(kLarge);
EXPECT_EQ(DataSize::Zero(), DataSize::Bytes(0));
EXPECT_EQ(DataSize::Infinity(), DataSize::Infinity());
EXPECT_EQ(small, small);
EXPECT_LE(small, small);
EXPECT_GE(small, small);
EXPECT_NE(small, large);
EXPECT_LE(small, large);
EXPECT_LT(small, large);
EXPECT_GE(large, small);
EXPECT_GT(large, small);
EXPECT_LT(DataSize::Zero(), small);
EXPECT_GT(DataSize::Infinity(), large);
}
TEST(DataSizeTest, ConvertsToAndFromDouble) {
const int64_t kValue = 128;
const double kDoubleValue = static_cast<double>(kValue);
EXPECT_EQ(DataSize::Bytes(kValue).bytes<double>(), kDoubleValue);
EXPECT_EQ(DataSize::Bytes(kDoubleValue).bytes(), kValue);
const double kInfinity = std::numeric_limits<double>::infinity();
EXPECT_EQ(DataSize::Infinity().bytes<double>(), kInfinity);
EXPECT_TRUE(DataSize::Bytes(kInfinity).IsInfinite());
}
TEST(DataSizeTest, MathOperations) {
const int64_t kValueA = 450;
const int64_t kValueB = 267;
const DataSize size_a = DataSize::Bytes(kValueA);
const DataSize size_b = DataSize::Bytes(kValueB);
EXPECT_EQ((size_a + size_b).bytes(), kValueA + kValueB);
EXPECT_EQ((size_a - size_b).bytes(), kValueA - kValueB);
const int32_t kInt32Value = 123;
const double kFloatValue = 123.0;
EXPECT_EQ((size_a * kValueB).bytes(), kValueA * kValueB);
EXPECT_EQ((size_a * kInt32Value).bytes(), kValueA * kInt32Value);
EXPECT_EQ((size_a * kFloatValue).bytes(), kValueA * kFloatValue);
EXPECT_EQ((size_a / 10).bytes(), kValueA / 10);
EXPECT_EQ(size_a / size_b, static_cast<double>(kValueA) / kValueB);
DataSize mutable_size = DataSize::Bytes(kValueA);
mutable_size += size_b;
EXPECT_EQ(mutable_size.bytes(), kValueA + kValueB);
mutable_size -= size_a;
EXPECT_EQ(mutable_size.bytes(), kValueB);
}
} // namespace test
} // namespace webrtc
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