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/*
* Copyright 2020 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 <gmock/gmock.h>
#include <gtest/gtest.h>
#include <scheduler/TimeKeeper.h>
#include <scheduler/Timer.h>
#include "AsyncCallRecorder.h"
namespace android::scheduler {
struct TestableTimer : public Timer {
public:
void makeEpollError() {
// close the epoll file descriptor to cause an epoll error
close(mEpollFd);
}
};
struct TimerTest : testing::Test {
static constexpr int kIterations = 20;
AsyncCallRecorder<void (*)()> mCallbackRecorder;
TestableTimer mTimer;
void timerCallback() { mCallbackRecorder.recordCall(); }
};
TEST_F(TimerTest, callsCallbackIfScheduledInPast) {
for (int i = 0; i < kIterations; i++) {
mTimer.alarmAt(std::bind(&TimerTest::timerCallback, this), systemTime() - 1'000'000);
EXPECT_TRUE(mCallbackRecorder.waitForCall().has_value());
EXPECT_FALSE(mCallbackRecorder.waitForUnexpectedCall().has_value());
}
}
TEST_F(TimerTest, recoversAfterEpollError) {
for (int i = 0; i < kIterations; i++) {
mTimer.makeEpollError();
mTimer.alarmAt(std::bind(&TimerTest::timerCallback, this), systemTime() - 1'000'000);
EXPECT_TRUE(mCallbackRecorder.waitForCall().has_value());
EXPECT_FALSE(mCallbackRecorder.waitForUnexpectedCall().has_value());
}
}
} // namespace android::scheduler
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