1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.lang3.concurrent; 18 19 import static org.junit.jupiter.api.Assertions.assertFalse; 20 import static org.junit.jupiter.api.Assertions.assertTrue; 21 22 import org.junit.jupiter.api.Test; 23 24 /** 25 * Tests {@code LazyInitializer}. 26 */ 27 public class LazyInitializerSimpleTest extends AbstractConcurrentInitializerTest { 28 29 /** 30 * A test implementation of LazyInitializer. This class creates a plain Object. As Object does not provide a specific equals() method, it is easy to check 31 * whether multiple instances were created. 32 */ 33 private static final class LazyInitializerTestImpl extends LazyInitializer<Object> { 34 @Override 35 protected Object initialize() { 36 return new Object(); 37 } 38 } 39 40 /** 41 * Creates the initializer to be tested. This implementation returns the {@code LazyInitializer} created in the {@code setUp()} method. 42 * 43 * @return the initializer to be tested 44 */ 45 @Override 46 protected LazyInitializer<Object> createInitializer() { 47 return new LazyInitializerTestImpl(); 48 } 49 50 @Test 51 public void testIsInitialized() throws ConcurrentException { 52 final LazyInitializer<Object> initializer = createInitializer(); 53 assertFalse(initializer.isInitialized()); 54 initializer.get(); 55 assertTrue(initializer.isInitialized()); 56 } 57 58 }