| /* |
| * Copyright 2018 The gRPC Authors |
| * |
| * 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 io.grpc.internal; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.TimeUnit; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Tests for {@link Rescheduler}. |
| */ |
| @RunWith(JUnit4.class) |
| public class ReschedulerTest { |
| |
| private final Runner runner = new Runner(); |
| private final Exec exec = new Exec(); |
| private final FakeClock scheduler = new FakeClock(); |
| private final Rescheduler rescheduler = new Rescheduler( |
| runner, |
| exec, |
| scheduler.getScheduledExecutorService(), |
| scheduler.getStopwatchSupplier().get()); |
| |
| @Test |
| public void runs() { |
| assertFalse(runner.ran); |
| rescheduler.reschedule(1, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| |
| scheduler.forwardNanos(1); |
| |
| assertTrue(runner.ran); |
| } |
| |
| @Test |
| public void cancels() { |
| assertFalse(runner.ran); |
| rescheduler.reschedule(1, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| rescheduler.cancel(/* permanent= */ false); |
| |
| scheduler.forwardNanos(1); |
| |
| assertFalse(runner.ran); |
| assertTrue(exec.executed); |
| } |
| |
| @Test |
| public void cancelPermanently() { |
| assertFalse(runner.ran); |
| rescheduler.reschedule(1, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| rescheduler.cancel(/* permanent= */ true); |
| |
| scheduler.forwardNanos(1); |
| |
| assertFalse(runner.ran); |
| assertFalse(exec.executed); |
| } |
| |
| @Test |
| public void reschedules() { |
| assertFalse(runner.ran); |
| rescheduler.reschedule(1, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| assertFalse(exec.executed); |
| rescheduler.reschedule(50, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| assertFalse(exec.executed); |
| |
| scheduler.forwardNanos(1); |
| assertFalse(runner.ran); |
| assertTrue(exec.executed); |
| |
| scheduler.forwardNanos(50); |
| |
| assertTrue(runner.ran); |
| } |
| |
| @Test |
| public void reschedulesShortDelay() { |
| assertFalse(runner.ran); |
| rescheduler.reschedule(50, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| assertFalse(exec.executed); |
| rescheduler.reschedule(1, TimeUnit.NANOSECONDS); |
| assertFalse(runner.ran); |
| assertFalse(exec.executed); |
| |
| scheduler.forwardNanos(1); |
| assertTrue(runner.ran); |
| assertTrue(exec.executed); |
| } |
| |
| private static final class Exec implements Executor { |
| boolean executed; |
| |
| @Override |
| public void execute(Runnable command) { |
| executed = true; |
| |
| command.run(); |
| } |
| } |
| |
| private static final class Runner implements Runnable { |
| boolean ran; |
| |
| @Override |
| public void run() { |
| ran = true; |
| } |
| } |
| } |