/***********************************************************************************************************************
 * Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
 *
 * 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 eu.stratosphere.nephele.instance.local;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import junit.framework.Assert;

import org.junit.Test;

import eu.stratosphere.configuration.GlobalConfiguration;
import eu.stratosphere.nephele.instance.InstanceType;
import eu.stratosphere.nephele.jobmanager.JobManager;
import eu.stratosphere.nephele.jobmanager.JobManager.ExecutionMode;
import eu.stratosphere.nephele.util.ServerTestUtils;

/**
 * Tests for the {@link LocalInstanceManager}.
 * 
 */
public class LocalInstanceManagerTest {


	/**
	 * Checks if the local instance manager reads the default correctly from the configuration file.
	 */
	@Test
	public void testInstanceTypeFromConfiguration() {

		try {
			final String configDir = ServerTestUtils.getConfigDir();
			if (configDir == null) {
				fail("Cannot locate configuration directory");
			}

			GlobalConfiguration.loadConfiguration(configDir);

			// start JobManager
			ExecutionMode executionMode = ExecutionMode.LOCAL;
			JobManager jm = new JobManager(executionMode);

			final TestInstanceListener testInstanceListener = new TestInstanceListener();
	
			LocalInstanceManager lm = (LocalInstanceManager) jm.getInstanceManager(); // this is for sure, because I chose the local strategy
			try {
				lm.setInstanceListener(testInstanceListener);
	
				final InstanceType defaultInstanceType = lm.getDefaultInstanceType();
				assertEquals("test", defaultInstanceType.getIdentifier());
				assertEquals(4, defaultInstanceType.getNumberOfComputeUnits());
				assertEquals(4, defaultInstanceType.getNumberOfCores());
				assertEquals(1024, defaultInstanceType.getMemorySize());
				assertEquals(160, defaultInstanceType.getDiskCapacity());
				assertEquals(0, defaultInstanceType.getPricePerHour());
	
			} catch (Exception e) {
				e.printStackTrace();
				Assert.fail("Instantiation of LocalInstanceManager failed: " + e.getMessage());
			} finally {
				jm.shutdown();
			}
		}
		catch (Exception e) {
			System.err.println(e.getMessage());
			e.printStackTrace();
			Assert.fail("Test caused an error: " + e.getMessage());
		}
	}
}