/**
 * 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 org.apache.hadoop.yarn.server.resourcemanager.monitor;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
import org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy;
import org.junit.Test;

import static org.junit.Assert.fail;

public class TestSchedulingMonitor {

  @Test(timeout = 10000)
  public void testRMStarts() {
    Configuration conf = new YarnConfiguration();
    conf.setBoolean(YarnConfiguration.RM_SCHEDULER_ENABLE_MONITORS, true);
    conf.set(YarnConfiguration.RM_SCHEDULER_MONITOR_POLICIES,
        ProportionalCapacityPreemptionPolicy.class.getCanonicalName());

    ResourceManager rm = new MockRM();
    try {
      rm.init(conf);
    } catch (Exception e) {
      fail("ResourceManager does not start when " +
          YarnConfiguration.RM_SCHEDULER_ENABLE_MONITORS + " is set to true");
    }
  }
}
