| /* |
| * 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.commons.lang3.concurrent; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| |
| import java.util.regex.Pattern; |
| |
| import org.junit.jupiter.api.BeforeEach; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Test class for {@code ConstantInitializer}. |
| */ |
| public class ConstantInitializerTest { |
| /** Constant for the object managed by the initializer. */ |
| private static final Integer VALUE = 42; |
| |
| /** The initializer to be tested. */ |
| private ConstantInitializer<Integer> init; |
| |
| @BeforeEach |
| public void setUp() { |
| init = new ConstantInitializer<>(VALUE); |
| } |
| |
| /** |
| * Helper method for testing equals() and hashCode(). |
| * |
| * @param obj the object to compare with the test instance |
| * @param expected the expected result |
| */ |
| private void checkEquals(final Object obj, final boolean expected) { |
| assertEquals(expected, init.equals(obj), "Wrong result of equals"); |
| if (obj != null) { |
| assertEquals(expected, obj.equals(init), "Not symmetric"); |
| if (expected) { |
| assertEquals(init.hashCode(), obj.hashCode(), "Different hash codes"); |
| } |
| } |
| } |
| |
| /** |
| * Tests whether the correct object is returned. |
| */ |
| @Test |
| public void testGetObject() { |
| assertEquals(VALUE, init.getObject(), "Wrong object"); |
| } |
| |
| /** |
| * Tests whether get() returns the correct object. |
| * |
| * @throws org.apache.commons.lang3.concurrent.ConcurrentException so we don't have to catch it |
| */ |
| @Test |
| public void testGet() throws ConcurrentException { |
| assertEquals(VALUE, init.get(), "Wrong object"); |
| } |
| |
| /** |
| * Tests equals() if the expected result is true. |
| */ |
| @Test |
| public void testEqualsTrue() { |
| checkEquals(init, true); |
| ConstantInitializer<Integer> init2 = new ConstantInitializer<>( |
| Integer.valueOf(VALUE.intValue())); |
| checkEquals(init2, true); |
| init = new ConstantInitializer<>(null); |
| init2 = new ConstantInitializer<>(null); |
| checkEquals(init2, true); |
| } |
| |
| /** |
| * Tests equals() if the expected result is false. |
| */ |
| @Test |
| public void testEqualsFalse() { |
| ConstantInitializer<Integer> init2 = new ConstantInitializer<>( |
| null); |
| checkEquals(init2, false); |
| init2 = new ConstantInitializer<>(VALUE + 1); |
| checkEquals(init2, false); |
| } |
| |
| /** |
| * Tests equals() with objects of other classes. |
| */ |
| @Test |
| public void testEqualsWithOtherObjects() { |
| checkEquals(null, false); |
| checkEquals(this, false); |
| checkEquals(new ConstantInitializer<>("Test"), false); |
| } |
| |
| /** |
| * Tests the string representation. |
| */ |
| @Test |
| public void testToString() { |
| final String s = init.toString(); |
| final Pattern pattern = Pattern |
| .compile("ConstantInitializer@-?\\d+ \\[ object = " + VALUE |
| + " \\]"); |
| assertTrue(pattern.matcher(s).matches(), "Wrong string: " + s); |
| } |
| |
| /** |
| * Tests the string representation if the managed object is null. |
| */ |
| @Test |
| public void testToStringNull() { |
| final String s = new ConstantInitializer<>(null).toString(); |
| assertTrue(s.indexOf("object = null") > 0, "Object not found: " + s); |
| } |
| } |