| /** |
| * 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.spark; |
| |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| |
| import org.apache.crunch.PCollection; |
| import org.apache.crunch.PObject; |
| import org.apache.crunch.Pipeline; |
| import org.apache.crunch.types.avro.Avros; |
| import org.junit.Test; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| |
| import javax.annotation.Nullable; |
| |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.not; |
| import static org.hamcrest.Matchers.nullValue; |
| |
| public class SmallCollectionLengthTest implements Serializable { |
| |
| |
| @Test |
| public void smallCollectionsShouldNotHaveNullLength() throws Exception { |
| Pipeline p = new SparkPipeline("local", "foobar"); |
| final ImmutableList<String> |
| allFruits = |
| ImmutableList.of("apelsin", "banan", "citron", "daddel"); |
| final ArrayList<ImmutableList<String>> fruitLists = new ArrayList<>(); |
| for (int i = 0; i <= allFruits.size(); ++i) { |
| fruitLists.add(ImmutableList.copyOf(allFruits.subList(0, i))); |
| } |
| |
| final ArrayList<PObject<Long>> results = new ArrayList<>(); |
| for (ImmutableList<String> fruit : fruitLists) { |
| final PCollection<String> collection = p.create(fruit, Avros.strings()); |
| results.add(collection.length()); |
| } |
| |
| p.run(); |
| |
| final Iterable<Long> |
| lengths = |
| Iterables.transform(results, new Function<PObject<Long>, Long>() { |
| @Nullable |
| @Override |
| public Long apply(@Nullable PObject<Long> input) { |
| return input.getValue(); |
| } |
| }); |
| |
| for (Long length : lengths) { |
| assertThat(length, not(nullValue())); |
| } |
| |
| p.done(); |
| } |
| |
| } |