/**
* 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.crunch.impl.mr.emit;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import org.apache.crunch.impl.mr.run.RTNode;
import org.apache.crunch.test.StringWrapper;
import org.apache.crunch.types.PType;
import org.apache.crunch.types.avro.Avros;
import org.apache.hadoop.conf.Configuration;
import org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import com.google.common.collect.Lists;
public class IntermediateEmitterTest {
private StringWrapper stringWrapper;
private PType ptype;
@Before
public void setUp() {
stringWrapper = new StringWrapper("test");
ptype = spy(Avros.reflects(StringWrapper.class));
}
@Test
public void testEmit_SingleChild() {
RTNode singleChild = mock(RTNode.class);
IntermediateEmitter emitter = new IntermediateEmitter(ptype, Lists.newArrayList(singleChild),
new Configuration());
emitter.emit(stringWrapper);
ArgumentCaptor<StringWrapper> argumentCaptor = ArgumentCaptor.forClass(StringWrapper.class);
verify(singleChild).process(argumentCaptor.capture());
assertSame(stringWrapper, argumentCaptor.getValue());
}
@Test
public void testEmit_MultipleChildren() {
RTNode childA = mock(RTNode.class);
RTNode childB = mock(RTNode.class);
IntermediateEmitter emitter = new IntermediateEmitter(ptype, Lists.newArrayList(childA, childB),
new Configuration());
emitter.emit(stringWrapper);
ArgumentCaptor<StringWrapper> argumentCaptorA = ArgumentCaptor.forClass(StringWrapper.class);
ArgumentCaptor<StringWrapper> argumentCaptorB = ArgumentCaptor.forClass(StringWrapper.class);
verify(childA).process(argumentCaptorA.capture());
verify(childB).process(argumentCaptorB.capture());
assertEquals(stringWrapper, argumentCaptorA.getValue());
assertEquals(stringWrapper, argumentCaptorB.getValue());
// Make sure that multiple children means deep copies are performed
assertNotSame(stringWrapper, argumentCaptorA.getValue());
assertNotSame(stringWrapper, argumentCaptorB.getValue());
}
}