CountBasedLimiterTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 gobblin.util.limiter;

import org.testng.Assert;
import org.testng.annotations.Test;

import gobblin.util.limiter.CountBasedLimiter;
import gobblin.util.limiter.Limiter;


/**
 * Unit tests for {@link CountBasedLimiter}.
 *
 * @author Yinan Li
 */
@Test(groups = { "gobblin.util.limiter" })
public class CountBasedLimiterTest {

  @Test
  public void testThrottling() throws InterruptedException {
    Limiter limiter = new CountBasedLimiter(10);
    limiter.start();

    for (int i = 0; i < 10; i++) {
      Assert.assertTrue(limiter.acquirePermits(1) != null);
    }
    Assert.assertTrue(limiter.acquirePermits(1) == null);

    limiter.stop();
  }
}