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/*
* Copyright 2007 the original author or authors.
*
* Licensed 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.mockftpserver.core.util;
import org.apache.log4j.Logger;
import org.mockftpserver.test.AbstractTestCase;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* Tests for the Assert class
*
* @author Chris Mair
* @version $Revision$ - $Date$
*/
public class AssertTest extends AbstractTestCase {
private static final Logger LOG = Logger.getLogger(AssertTest.class);
/**
* This interface defines a generic closure (a generic wrapper for a block of code).
*/
private static interface ExceptionClosure {
/**
* Execute arbitrary logic that can throw any type of Exception
*
* @throws Exception
*/
public void execute() throws Exception;
}
private static final String MESSAGE = "exception message";
/**
* Test the assertNull() method
*/
public void testAssertNull() {
Assert.isNull(null, MESSAGE);
try {
Assert.isNull("OK", MESSAGE);
fail("Expected IllegalArumentException");
}
catch (AssertFailedException expected) {
LOG.info("Expected: " + expected);
assertExceptionMessageContains(expected, MESSAGE);
}
}
/**
* Test the assertNotNull() method
*/
public void testAssertNotNull() {
Assert.notNull("OK", MESSAGE);
try {
Assert.notNull(null, MESSAGE);
fail("Expected IllegalArumentException");
}
catch (AssertFailedException expected) {
LOG.info("Expected: " + expected);
assertExceptionMessageContains(expected, MESSAGE);
}
}
/**
* Test the assertTrue() method
*/
public void testAssertTrue() throws Exception {
Assert.isTrue(true, MESSAGE);
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.isTrue(false, MESSAGE);
}
});
}
/**
* Test the assertFalse() method
*/
public void testAssertFalse() throws Exception {
Assert.isFalse(false, MESSAGE);
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.isFalse(true, MESSAGE);
}
});
}
/**
* Test the assertNotEmpty(Collection,String) method
*/
public void testAssertNotNullOrEmpty_Collection() throws Exception {
final Collection COLLECTION = Collections.singletonList("item");
Assert.notNullOrEmpty(COLLECTION, MESSAGE);
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty((Collection) null, MESSAGE);
}
});
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty(new ArrayList(), MESSAGE);
}
});
}
/**
* Test the assertNotEmpty(Map,String) method
*/
public void testAssertNotNullOrEmpty_Map() throws Exception {
final Map MAP = Collections.singletonMap("key", "value");
Assert.notNullOrEmpty(MAP, MESSAGE);
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty((Map) null, MESSAGE);
}
});
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty(new HashMap(), MESSAGE);
}
});
}
/**
* Test the assertNotEmpty(Objecct[],String) method
*/
public void testAssertNotNullOrEmpty_array() throws Exception {
final Object[] ARRAY = {"1", "2"};
Assert.notNullOrEmpty(ARRAY, MESSAGE);
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty((Object[]) null, MESSAGE);
}
});
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty(new String[]{}, MESSAGE);
}
});
}
/**
* Test the assertNotEmpty(String,String) method
*/
public void testAssertNotNullOrEmpty_String() throws Exception {
Assert.notNullOrEmpty("OK", MESSAGE);
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty((String) null, MESSAGE);
}
});
verifyThrowsAssertFailedException(true, new ExceptionClosure() {
public void execute() throws Exception {
Assert.notNullOrEmpty("", MESSAGE);
}
});
}
//-------------------------------------------------------------------------
// Helper Methods
//-------------------------------------------------------------------------
private void assertExceptionMessageContains(Throwable exception, String text) {
String message = exception.getMessage();
assertTrue("Exception message [" + message + "] does not contain [" + text + "]", message.indexOf(text) != -1);
}
/**
* Verify that execution of the ExceptionClosure (code block) results in an
* AssertFailedException being thrown with the constant MESSAGE as its message.
*
* @param closure - the ExceptionClosure encapsulating the code to execute
*/
private void verifyThrowsAssertFailedException(boolean checkMessage, ExceptionClosure closure)
throws Exception {
try {
closure.execute();
fail("Expected IllegalArumentException");
}
catch (AssertFailedException expected) {
LOG.info("Expected: " + expected);
if (checkMessage) {
assertExceptionMessageContains(expected, MESSAGE);
}
}
}
}
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