1/* 2 * Copyright 2007 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package org.mockftpserver.core.util; 17 18import org.slf4j.Logger; 19import org.slf4j.LoggerFactory; 20import org.mockftpserver.test.AbstractTestCase; 21 22import java.util.ArrayList; 23import java.util.Collection; 24import java.util.Collections; 25import java.util.HashMap; 26import java.util.Map; 27 28/** 29 * Tests for the Assert class 30 * 31 * @author Chris Mair 32 * @version $Revision$ - $Date$ 33 */ 34public class AssertTest extends AbstractTestCase { 35 36 private static final Logger LOG = LoggerFactory.getLogger(AssertTest.class); 37 38 /** 39 * This interface defines a generic closure (a generic wrapper for a block of code). 40 */ 41 private static interface ExceptionClosure { 42 /** 43 * Execute arbitrary logic that can throw any type of Exception 44 * 45 * @throws Exception 46 */ 47 public void execute() throws Exception; 48 } 49 50 51 private static final String MESSAGE = "exception message"; 52 53 /** 54 * Test the assertNull() method 55 */ 56 public void testAssertNull() { 57 58 Assert.isNull(null, MESSAGE); 59 60 try { 61 Assert.isNull("OK", MESSAGE); 62 fail("Expected IllegalArumentException"); 63 } 64 catch (AssertFailedException expected) { 65 LOG.info("Expected: " + expected); 66 assertExceptionMessageContains(expected, MESSAGE); 67 } 68 } 69 70 71 /** 72 * Test the assertNotNull() method 73 */ 74 public void testAssertNotNull() { 75 76 Assert.notNull("OK", MESSAGE); 77 78 try { 79 Assert.notNull(null, MESSAGE); 80 fail("Expected IllegalArumentException"); 81 } 82 catch (AssertFailedException expected) { 83 LOG.info("Expected: " + expected); 84 assertExceptionMessageContains(expected, MESSAGE); 85 } 86 } 87 88 /** 89 * Test the assertTrue() method 90 */ 91 public void testAssertTrue() throws Exception { 92 93 Assert.isTrue(true, MESSAGE); 94 95 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 96 public void execute() throws Exception { 97 Assert.isTrue(false, MESSAGE); 98 } 99 }); 100 } 101 102 /** 103 * Test the assertFalse() method 104 */ 105 public void testAssertFalse() throws Exception { 106 107 Assert.isFalse(false, MESSAGE); 108 109 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 110 public void execute() throws Exception { 111 Assert.isFalse(true, MESSAGE); 112 } 113 }); 114 } 115 116 /** 117 * Test the assertNotEmpty(Collection,String) method 118 */ 119 public void testAssertNotNullOrEmpty_Collection() throws Exception { 120 121 final Collection COLLECTION = Collections.singletonList("item"); 122 Assert.notNullOrEmpty(COLLECTION, MESSAGE); 123 124 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 125 public void execute() throws Exception { 126 Assert.notNullOrEmpty((Collection) null, MESSAGE); 127 } 128 }); 129 130 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 131 public void execute() throws Exception { 132 Assert.notNullOrEmpty(new ArrayList(), MESSAGE); 133 } 134 }); 135 } 136 137 /** 138 * Test the assertNotEmpty(Map,String) method 139 */ 140 public void testAssertNotNullOrEmpty_Map() throws Exception { 141 142 final Map MAP = Collections.singletonMap("key", "value"); 143 Assert.notNullOrEmpty(MAP, MESSAGE); 144 145 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 146 public void execute() throws Exception { 147 Assert.notNullOrEmpty((Map) null, MESSAGE); 148 } 149 }); 150 151 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 152 public void execute() throws Exception { 153 Assert.notNullOrEmpty(new HashMap(), MESSAGE); 154 } 155 }); 156 } 157 158 /** 159 * Test the assertNotEmpty(Objecct[],String) method 160 */ 161 public void testAssertNotNullOrEmpty_array() throws Exception { 162 163 final Object[] ARRAY = {"1", "2"}; 164 Assert.notNullOrEmpty(ARRAY, MESSAGE); 165 166 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 167 public void execute() throws Exception { 168 Assert.notNullOrEmpty((Object[]) null, MESSAGE); 169 } 170 }); 171 172 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 173 public void execute() throws Exception { 174 Assert.notNullOrEmpty(new String[]{}, MESSAGE); 175 } 176 }); 177 } 178 179 /** 180 * Test the assertNotEmpty(String,String) method 181 */ 182 public void testAssertNotNullOrEmpty_String() throws Exception { 183 184 Assert.notNullOrEmpty("OK", MESSAGE); 185 186 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 187 public void execute() throws Exception { 188 Assert.notNullOrEmpty((String) null, MESSAGE); 189 } 190 }); 191 192 verifyThrowsAssertFailedException(true, new ExceptionClosure() { 193 public void execute() throws Exception { 194 Assert.notNullOrEmpty("", MESSAGE); 195 } 196 }); 197 } 198 199 //------------------------------------------------------------------------- 200 // Helper Methods 201 //------------------------------------------------------------------------- 202 203 private void assertExceptionMessageContains(Throwable exception, String text) { 204 String message = exception.getMessage(); 205 assertTrue("Exception message [" + message + "] does not contain [" + text + "]", message.indexOf(text) != -1); 206 } 207 208 /** 209 * Verify that execution of the ExceptionClosure (code block) results in an 210 * AssertFailedException being thrown with the constant MESSAGE as its message. 211 * 212 * @param closure - the ExceptionClosure encapsulating the code to execute 213 */ 214 private void verifyThrowsAssertFailedException(boolean checkMessage, ExceptionClosure closure) 215 throws Exception { 216 217 try { 218 closure.execute(); 219 fail("Expected IllegalArumentException"); 220 } 221 catch (AssertFailedException expected) { 222 LOG.info("Expected: " + expected); 223 if (checkMessage) { 224 assertExceptionMessageContains(expected, MESSAGE); 225 } 226 } 227 } 228 229} 230