org.force66.beantester.tests.ComparableTest Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of BeanTester Show documentation

Tests normal bean methods such as accessors, mutators, equals(), hashcode(), etc.

There is a newer version: 1.0.1-rc1

/*
 * This software is licensed under the Apache License, Version 2.0
 * (the "License") agreement; 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.force66.beantester.tests;

import org.apache.commons.lang3.reflect.MethodUtils;
import org.force66.beantester.utils.BeanTesterException;
import org.force66.beantester.utils.InstantiationUtils;

/**
 * Determines if the bean implements Comparable and does a primitive compareTo test if needed.
 * @author D. Ashmore
 *
 */
public class ComparableTest extends BaseBeanTest {

	@Override
	public boolean testBeanClass(Class klass) {
		Object bean = InstantiationUtils.safeNewInstance(klass);
		if (bean instanceof Comparable) {
			Integer compareResult = -1;
			try {
				compareResult = (Integer)MethodUtils.invokeMethod(bean, "compareTo", bean);
			} catch (Exception e) {
				throw new BeanTesterException("Bean implements Comparable, but compareTo() execution errors", e)
				.addContextValue("class", klass.getName());
			} 
			
			if (compareResult.intValue() != 0) {
				this.setFailureReason("bean.compareTo(bean) should be 0");
				return false;
			}
			else {
				this.setFailureReason(null);
			}
			
			/*
			 * I would also like to do a test comparing two bean instances with different attribute values to verify
			 * that the compareTo isn't zero, but there's no way to determine which attributes are considered for the compare.
			 */
		}
		return true;
	}

}