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Tests normal bean methods such as accessors, mutators, equals(), hashcode(), etc.
/*
* 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;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Array;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.lang3.Validate;
import org.force66.beantester.tests.ClonableTest;
import org.force66.beantester.tests.ComparableTest;
import org.force66.beantester.tests.HashcodeTest;
import org.force66.beantester.tests.IdentityEqualsTest;
import org.force66.beantester.tests.ToStringTest;
import org.force66.beantester.tests.ValuePropertyTest;
import org.force66.beantester.utils.BeanTesterException;
import org.force66.beantester.utils.InstantiationUtils;
import org.force66.beantester.valuegens.GenericValueGenerator;
import org.force66.beantester.valuegens.InterfaceValueGenerator;
/**
* Main user class for the BeanTester product. BeanTester performs monotonous testing on normal
* java beans for accessors, mutators, equals(), hashcode(), toString() so you don't have to write those tests.
*
* Documentation for the product can be found here.
* @author D. Ashmore
*
*/
public class BeanTester {
private Set fieldExclusionSet = new HashSet();
private ValueGeneratorFactory valueGeneratorFactory = new ValueGeneratorFactory();
private List beanTestList = new ArrayList();
public BeanTester() {
fieldExclusionSet.add("class"); // Object.class shouldn't be tested.
beanTestList.add(new IdentityEqualsTest());
beanTestList.add(new ClonableTest());
beanTestList.add(new ComparableTest());
beanTestList.add(new ToStringTest());
beanTestList.add(new HashcodeTest());
}
/**
* Given field will be excluded from property-level testing
* @param fieldName
*/
public void addExcludedField(String fieldName) {
Validate.notEmpty(fieldName, "Null or blank fieldName not allowed.");
fieldExclusionSet.add(fieldName);
}
/**
* Values will be used for property-level testing for fields defined with the given class.
* @param fieldClass
* @param values
*/
public void addTestValues(Class fieldClass, Object[] values) {
Validate.notNull(fieldClass, "Null fieldClass not allowed.");
Validate.notEmpty(values, "Null values array not allowed.");
valueGeneratorFactory.registerGenerator(fieldClass, new GenericValueGenerator(values));
}
public void testBean(Class beanClass) {
Validate.notNull(beanClass, "Null beanClass not allowed.");
testBean(InstantiationUtils.safeNewInstance(beanClass));
}
protected void testBean(Object bean) {
Validate.notNull(bean, "Null bean not allowed.");
try {performBeanTests(bean);}
catch (Exception e) {
throw new BeanTesterException(e)
.addContextValue("bean type", bean.getClass().getName());
}
for (PropertyDescriptor descriptor: PropertyUtils.getPropertyDescriptors(bean)) {
if ( !fieldExclusionSet.contains(descriptor.getName())) {
testProperty(bean, descriptor);
}
}
}
protected void testProperty(Object bean, PropertyDescriptor descriptor) {
try {
performNullTest(bean, descriptor);
for (Object value: generateValues(descriptor.getPropertyType())) {
performValueTest(bean, descriptor, value);
}
}
catch (BeanTesterException are) {
throw are.addContextValue("bean type", bean.getClass().getName())
.addContextValue("field", descriptor.getName());
}
catch (Exception e) {
throw new BeanTesterException(e)
.addContextValue("bean type", bean.getClass().getName())
.addContextValue("field", descriptor.getName());
}
}
protected Object[] generateValues(Class type) {
ValueGenerator generator = valueGeneratorFactory.forClass(type);
if (generator != null) {
return generator.makeValues();
}
if (type.isInterface()) {
InterfaceValueGenerator gen = new InterfaceValueGenerator(type);
this.valueGeneratorFactory.registerGenerator(type, gen);
return gen.makeValues();
}
else if (type.isEnum()) {
return type.getEnumConstants();
}
else if (type.isArray()) {
Array.newInstance(type.getComponentType(), 0);
}
else if (Class.class.equals(type)) {
return new Object[]{Object.class};
}
else {
return new Object[]{InstantiationUtils.safeNewInstance(type)};
}
return new Object[0];
}
protected void performBeanTests(Object bean) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
for (BeanTest test: beanTestList) {
if (!test.testBeanClass(bean.getClass())) {
throw new BeanTesterException("FailedTest")
.addContextValue("test", test.getClass().getName())
.addContextValue("failure reason", test.getFailureReason());
}
}
}
protected void performValueTest(Object bean,
PropertyDescriptor descriptor, Object value) throws IllegalAccessException,
InvocationTargetException {
if (!new ValuePropertyTest().testProperty(bean, descriptor, value)) {
throw new BeanTesterException("Property test failed")
.addContextValue("fieldName", descriptor.getName())
.addContextValue("class", bean.getClass().getName())
.addContextValue("test value", value);
}
}
protected void performNullTest(Object bean,
PropertyDescriptor descriptor) throws IllegalAccessException,
InvocationTargetException {
if (!new ValuePropertyTest().testProperty(bean, descriptor, null)) {
throw new BeanTesterException("Property test failed")
.addContextValue("fieldName", descriptor.getName())
.addContextValue("class", bean.getClass().getName())
.addContextValue("test value", null);
}
}
}