| /** |
| * 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.hadoop.yarn.util; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Tests utility methods in {@link TimelineServiceHelper}. |
| */ |
| public class TestTimelineServiceHelper { |
| |
| @Test |
| public void testMapCastToHashMap() { |
| |
| // Test null map be casted to null |
| Map<String, String> nullMap = null; |
| Assert.assertNull(TimelineServiceHelper.mapCastToHashMap(nullMap)); |
| |
| // Test empty hashmap be casted to a empty hashmap |
| Map<String, String> emptyHashMap = new HashMap<String, String>(); |
| Assert.assertEquals( |
| TimelineServiceHelper.mapCastToHashMap(emptyHashMap).size(), 0); |
| |
| // Test empty non-hashmap be casted to a empty hashmap |
| Map<String, String> emptyTreeMap = new TreeMap<String, String>(); |
| Assert.assertEquals( |
| TimelineServiceHelper.mapCastToHashMap(emptyTreeMap).size(), 0); |
| |
| // Test non-empty hashmap be casted to hashmap correctly |
| Map<String, String> firstHashMap = new HashMap<String, String>(); |
| String key = "KEY"; |
| String value = "VALUE"; |
| firstHashMap.put(key, value); |
| Assert.assertEquals( |
| TimelineServiceHelper.mapCastToHashMap(firstHashMap), firstHashMap); |
| |
| // Test non-empty non-hashmap is casted correctly. |
| Map<String, String> firstTreeMap = new TreeMap<String, String>(); |
| firstTreeMap.put(key, value); |
| HashMap<String, String> alternateHashMap = |
| TimelineServiceHelper.mapCastToHashMap(firstTreeMap); |
| Assert.assertEquals(firstTreeMap.size(), alternateHashMap.size()); |
| Assert.assertEquals(alternateHashMap.get(key), value); |
| |
| // Test complicated hashmap be casted correctly |
| Map<String, Set<String>> complicatedHashMap = |
| new HashMap<String, Set<String>>(); |
| Set<String> hashSet = new HashSet<String>(); |
| hashSet.add(value); |
| complicatedHashMap.put(key, hashSet); |
| Assert.assertEquals( |
| TimelineServiceHelper.mapCastToHashMap(complicatedHashMap), |
| complicatedHashMap); |
| |
| // Test complicated non-hashmap get casted correctly |
| Map<String, Set<String>> complicatedTreeMap = |
| new TreeMap<String, Set<String>>(); |
| complicatedTreeMap.put(key, hashSet); |
| Assert.assertEquals( |
| TimelineServiceHelper.mapCastToHashMap(complicatedTreeMap).get(key), |
| hashSet); |
| } |
| |
| } |