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/*
* Copyright (C) 2017 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.
*/
package com.android.compatibility.common.util;
import static com.google.common.truth.Truth.assertThat;
import static org.mockito.Mockito.when;
import static org.testng.Assert.assertThrows;
import static org.testng.Assert.expectThrows;
import android.os.SystemClock;
import com.android.compatibility.common.util.Timeout.Sleeper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
import java.util.concurrent.Callable;
@RunWith(MockitoJUnitRunner.class)
public class TimeoutTest {
private static final String NAME = "TIME, Y U NO OUT?";
private static final String DESC = "something";
@Mock
private Callable<Object> mJob;
private final MySleeper mSleeper = new MySleeper();
@Test
public void testInvalidConstructor() {
// Invalid name
assertThrows(IllegalArgumentException.class, ()-> new Timeout(null, 1, 2, 2));
assertThrows(IllegalArgumentException.class, ()-> new Timeout("", 1, 2, 2));
// Invalid initial value
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, -1, 2, 2));
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 0, 2, 2));
// Invalid multiplier
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 1, -1, 2));
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 1, 0, 2));
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 1, 1, 2));
// Invalid max value
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 1, 2, -1));
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 1, 2, 0));
// Max value cannot be less than initial
assertThrows(IllegalArgumentException.class, ()-> new Timeout(NAME, 2, 2, 1));
}
@Test
public void testGetters() {
final Timeout timeout = new Timeout(NAME, 1, 2, 5);
assertThat(timeout.ms()).isEqualTo(1);
assertFloat(timeout.getMultiplier(), 2);
assertThat(timeout.getMaxValue()).isEqualTo(5);
assertThat(timeout.getName()).isEqualTo(NAME);
}
@Test
public void testIncrease() {
final Timeout timeout = new Timeout(NAME, 1, 2, 5);
// Pre-maximum
assertThat(timeout.increase()).isEqualTo(1);
assertThat(timeout.ms()).isEqualTo(2);
assertThat(timeout.increase()).isEqualTo(2);
assertThat(timeout.ms()).isEqualTo(4);
// Post-maximum
assertThat(timeout.increase()).isEqualTo(4);
assertThat(timeout.ms()).isEqualTo(5);
assertThat(timeout.increase()).isEqualTo(5);
assertThat(timeout.ms()).isEqualTo(5);
}
@Test
public void testRun_invalidArgs() {
final Timeout timeout = new Timeout(NAME, 1, 2, 5);
// Invalid description
assertThrows(IllegalArgumentException.class, ()-> timeout.run(null, mJob));
assertThrows(IllegalArgumentException.class, ()-> timeout.run("", mJob));
// Invalid max attempts
assertThrows(IllegalArgumentException.class, ()-> timeout.run(DESC, -1, mJob));
assertThrows(IllegalArgumentException.class, ()-> timeout.run(DESC, 0, mJob));
// Invalid job
assertThrows(IllegalArgumentException.class, ()-> timeout.run(DESC, null));
}
@Test
public void testRun_successOnFirstAttempt() throws Exception {
final Timeout timeout = new Timeout(mSleeper, NAME, 100, 2, 500);
final Object result = new Object();
when(mJob.call()).thenReturn(result);
assertThat(timeout.run(DESC, 1, mJob)).isSameAs(result);
assertThat(mSleeper.totalSleepingTime).isEqualTo(0);
}
@Test
public void testRun_successOnSecondAttempt() throws Exception {
final Timeout timeout = new Timeout(mSleeper, NAME, 100, 2, 500);
final Object result = new Object();
when(mJob.call()).thenReturn((Object) null, result);
assertThat(timeout.run(DESC, 10, mJob)).isSameAs(result);
assertThat(mSleeper.totalSleepingTime).isEqualTo(10);
}
@Test
public void testRun_allAttemptsFailed() throws Exception {
final Timeout timeout = new Timeout(mSleeper, NAME, 100, 2, 500);
final RetryableException e = expectThrows(RetryableException.class,
() -> timeout.run(DESC, 10, mJob));
assertThat(e.getMessage()).contains(DESC);
assertThat(e.getTimeout()).isSameAs(timeout);
assertThat(mSleeper.totalSleepingTime).isEqualTo(100);
}
private static final class MySleeper implements Sleeper {
public long totalSleepingTime;
@Override
public void sleep(long napTimeMs) {
// We still need to sleep, as the retry is based on ellapsed time. We could use a
// Mockito spy, but let's keep it simple
SystemClock.sleep(napTimeMs);
totalSleepingTime += napTimeMs;
}
}
public static void assertFloat(float actualValue, float expectedValue) {
assertThat(actualValue).isWithin(1.0e-10f).of(expectedValue);
}
}
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