| // 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.googlesource.gerrit.plugins.ratelimiter; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.googlesource.gerrit.plugins.ratelimiter.PeriodicRateLimiter.DEFAULT_TIME_LAPSE_IN_MINUTES; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.ArgumentMatchers.eq; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.verify; |
| |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mockito.ArgumentCaptor; |
| |
| public class PeriodicRateLimiterTest { |
| |
| private static final int RATE = 1000; |
| |
| private PeriodicRateLimiter limiter; |
| private ScheduledExecutorService scheduledExecutorMock; |
| |
| @Before |
| public void setUp() { |
| scheduledExecutorMock = mock(ScheduledExecutorService.class); |
| limiter = |
| new PeriodicRateLimiter( |
| scheduledExecutorMock, RATE, DEFAULT_TIME_LAPSE_IN_MINUTES, "Any Type"); |
| } |
| |
| @Test |
| public void testGetRatePerHour() { |
| assertThat(limiter.permitsPerHour()).isEqualTo(RATE); |
| } |
| |
| @Test |
| public void testAcquire() { |
| assertThat(limiter.availablePermits()).isEqualTo(RATE); |
| |
| for (int i = 1; i <= 1000; i++) { |
| assertThat(limiter.acquirePermit()).isTrue(); |
| assertThat(limiter.availablePermits()).isEqualTo(RATE - i); |
| } |
| assertThat(limiter.acquirePermit()).isFalse(); |
| assertThat(limiter.availablePermits()).isEqualTo(0); |
| } |
| |
| @Test |
| public void testReplenishPermits() { |
| testAcquire(); |
| limiter.replenishPermits(); |
| testAcquire(); |
| } |
| |
| @Test |
| public void testReplenishPermitsIsScheduled() { |
| verify(scheduledExecutorMock) |
| .scheduleAtFixedRate( |
| any(), |
| eq(DEFAULT_TIME_LAPSE_IN_MINUTES), |
| eq(DEFAULT_TIME_LAPSE_IN_MINUTES), |
| eq(TimeUnit.MINUTES)); |
| } |
| |
| @Test |
| public void testReplenishPermitsScheduledRunnableIsWorking() { |
| ArgumentCaptor<Runnable> runnableCaptor = ArgumentCaptor.forClass(Runnable.class); |
| verify(scheduledExecutorMock) |
| .scheduleAtFixedRate( |
| runnableCaptor.capture(), |
| eq(DEFAULT_TIME_LAPSE_IN_MINUTES), |
| eq(DEFAULT_TIME_LAPSE_IN_MINUTES), |
| eq(TimeUnit.MINUTES)); |
| |
| // Use all permits |
| testAcquire(); |
| |
| // force execution of the runnable that replenish the permits |
| runnableCaptor.getValue().run(); |
| |
| assertThat(limiter.availablePermits()).isEqualTo(RATE); |
| } |
| } |