| /** |
| * 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.fn; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.google.common.collect.Iterables; |
| import org.apache.crunch.MapFn; |
| import org.apache.crunch.Pair; |
| import org.apache.crunch.impl.mem.emit.InMemoryEmitter; |
| import org.junit.Test; |
| |
| @SuppressWarnings("serial") |
| public class ExtractKeyFnTest { |
| |
| protected static final MapFn<String, Integer> mapFn = new MapFn<String, Integer>() { |
| @Override |
| public Integer map(String input) { |
| return input.hashCode(); |
| } |
| }; |
| |
| protected static final ExtractKeyFn<Integer, String> one = new ExtractKeyFn<Integer, String>(mapFn); |
| |
| @Test |
| public void test() { |
| InMemoryEmitter<Pair<Integer, String>> emitter = InMemoryEmitter.create(); |
| one.process("boza", emitter); |
| assertEquals(Pair.of("boza".hashCode(), "boza"), Iterables.getOnlyElement(emitter.getOutput())); |
| } |
| } |