| /* |
| * 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.flink.graph.asm.dataset; |
| |
| import org.apache.flink.api.common.typeinfo.TypeHint; |
| import org.apache.flink.api.common.typeinfo.TypeInformation; |
| import org.apache.flink.api.java.DataSet; |
| import org.apache.flink.api.java.ExecutionEnvironment; |
| import org.apache.flink.graph.asm.dataset.ChecksumHashCode.Checksum; |
| |
| import org.apache.commons.lang3.ArrayUtils; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * Tests for {@link ChecksumHashCode}. |
| */ |
| public class ChecksumHashCodeTest { |
| |
| private ExecutionEnvironment env; |
| |
| @Before |
| public void setup() throws Exception { |
| env = ExecutionEnvironment.createCollectionsEnvironment(); |
| env.getConfig().enableObjectReuse(); |
| } |
| |
| @Test |
| public void testList() throws Exception { |
| List<Long> list = Arrays.asList(ArrayUtils.toObject( |
| new long[]{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 })); |
| |
| DataSet<Long> dataset = env.fromCollection(list); |
| |
| Checksum checksum = new ChecksumHashCode<Long>().run(dataset).execute(); |
| |
| assertEquals(list.size(), checksum.getCount()); |
| assertEquals(list.size() * (list.size() - 1) / 2, checksum.getChecksum()); |
| } |
| |
| @Test |
| public void testEmptyList() throws Exception { |
| DataSet<Long> dataset = env.fromCollection(Collections.emptyList(), TypeInformation.of(new TypeHint<Long>(){})); |
| |
| Checksum checksum = new ChecksumHashCode<Long>().run(dataset).execute(); |
| |
| assertEquals(0, checksum.getCount()); |
| assertEquals(0, checksum.getChecksum()); |
| } |
| } |