/**
* Copyright 2012 LiveRamp
*
* 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 com.liveramp.cascading_ext.tap;
import cascading.operation.Identity;
import cascading.pipe.Each;
import cascading.pipe.Pipe;
import cascading.tap.Tap;
import cascading.tuple.Fields;
import cascading.tuple.Tuple;
import cascading.tuple.TupleEntryCollector;
import com.google.common.collect.Lists;
import com.liveramp.cascading_ext.BaseTestCase;
import com.liveramp.cascading_ext.CascadingUtil;
import com.twitter.maple.tap.MemorySourceTap;
import org.apache.hadoop.fs.Path;
import org.junit.Test;
import java.io.IOException;
import static org.junit.Assert.*;
public class TestNullTap extends BaseTestCase {
@Test
public void testWrite() throws IOException {
TupleEntryCollector tc = new NullTap().openForWrite(CascadingUtil.get().getFlowProcess());
tc.add(new Tuple("testing if it fails"));
}
@Test
public void testFlow() throws IOException {
Tap input = new MemorySourceTap(
Lists.newArrayList(
new Tuple("line1", 1),
new Tuple("line2", 2),
new Tuple("line3", 3),
new Tuple("line4", 4)),
new Fields("description", "count"));
Tap output = new NullTap();
Pipe pipe = new Pipe("pipe");
pipe = new Each(pipe, Fields.ALL, new Identity(), Fields.RESULTS);
CascadingUtil.get().getFlowConnector().connect(input, output, pipe).complete();
assertFalse(fs.exists(new Path(output.getIdentifier())));
}
}