/**
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.tez.hadoop.shim;
import org.apache.hadoop.conf.Configuration;
import org.apache.tez.hadoop.shim.DummyShimProvider.DummyShim;
import org.junit.Assert;
import org.junit.Test;
public class TestHadoopShimsLoader {
@Test
public void testBasicLoader() {
HadoopShimsLoader loader = new HadoopShimsLoader(new Configuration(false));
HadoopShim shim = loader.getHadoopShim();
Assert.assertNotNull(shim);
Assert.assertEquals(DefaultHadoopShim.class, shim.getClass());
}
@Test
public void testLoaderOverride() {
Configuration conf = new Configuration(false);
conf.set(HadoopShimsLoader.TEZ_HADOOP_SHIM_PROVIDER_CLASS, DummyShimProvider.class.getName());
HadoopShimsLoader loader = new HadoopShimsLoader(conf, true);
HadoopShim shim = loader.getHadoopShim();
Assert.assertNotNull(shim);
Assert.assertEquals(DummyShim.class, shim.getClass());
}
@Test(expected = RuntimeException.class)
public void testInvalidOverride() {
Configuration conf = new Configuration(false);
conf.set(HadoopShimsLoader.TEZ_HADOOP_SHIM_PROVIDER_CLASS, "org.apache.tez.foo");
HadoopShimsLoader loader = new HadoopShimsLoader(conf, true);
HadoopShim shim = loader.getHadoopShim();
}
}