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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "timespec_math.h"
#include <gtest/gtest.h>
using profiler::TimespecMath;
TEST(Add, PositiveNanoSecondOverload) {
// sec are random positive integers, sum of nsec is > 2 * 1e9.
timespec t1 = {2, 500000001};
timespec t2 = {7, 1500000008};
timespec result;
TimespecMath::Add(t1, t2, &result);
EXPECT_EQ(11, result.tv_sec);
EXPECT_EQ(9, result.tv_nsec);
}
TEST(Add, NegativeNanoSecondOverload) {
// sec are random negative integers, sum of nsec is < -2 * 1e9.
timespec t1 = {-2, -500000001};
timespec t2 = {-7, -1500000008};
timespec result;
TimespecMath::Add(t1, t2, &result);
EXPECT_EQ(-12, result.tv_sec);
EXPECT_EQ(999999991, result.tv_nsec);
}
TEST(Add, OnePositiveOneNegativeToZero) {
timespec t1 = {1, 100000000};
timespec t2 = {-1, -100000000};
timespec result;
TimespecMath::Add(t1, t2, &result);
EXPECT_EQ(0, result.tv_sec);
EXPECT_EQ(0, result.tv_nsec);
}
TEST(Subtract, PositiveNanoSecondOverload) {
timespec t1 = {2, 500000001};
timespec t2 = {-7, -1500000008};
timespec result;
TimespecMath::Subtract(t1, t2, &result);
EXPECT_EQ(11, result.tv_sec);
EXPECT_EQ(9, result.tv_nsec);
}
TEST(Subtract, NegativeNanoSecondOverload) {
timespec t1 = {-2, -500000001};
timespec t2 = {7, 1500000008};
timespec result;
TimespecMath::Subtract(t1, t2, &result);
EXPECT_EQ(-12, result.tv_sec);
EXPECT_EQ(999999991, result.tv_nsec);
}
TEST(Subtract, SameValueToZero) {
timespec t1 = {1, 100000000};
timespec t2 = {1, 100000000};
timespec result;
TimespecMath::Subtract(t1, t2, &result);
EXPECT_EQ(0, result.tv_sec);
EXPECT_EQ(0, result.tv_nsec);
}
TEST(Compare, AllPossibleOutputs) {
timespec t1 = {1, 0};
timespec t2 = {2, -2000000000};
EXPECT_EQ(1, TimespecMath::Compare(t1, t2));
timespec t3 = {0, 2000000000};
EXPECT_EQ(-1, TimespecMath::Compare(t1, t3));
timespec t4 = {0, 1000000000};
EXPECT_EQ(0, TimespecMath::Compare(t1, t4));
}
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