beanpredicatetestcase.java

apache beanutils开源项目源码

/*
 * Copyright 2004 The Apache Software Foundation.
 * 
 * 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.apache.commons.beanutils;

import junit.framework.TestCase;

import org.apache.commons.collections.functors.EqualPredicate;
import org.apache.commons.collections.functors.InstanceofPredicate;
import org.apache.commons.collections.functors.NotPredicate;
import org.apache.commons.collections.functors.NullPredicate;

public class BeanPredicateTestCase extends TestCase {
   
    public BeanPredicateTestCase(String name) {
        super(name);
    }

    public void testEqual() {
        BeanPredicate predicate = 
            new BeanPredicate("stringProperty",new EqualPredicate("foo"));
        assertTrue(predicate.evaluate(new TestBean("foo")));
        assertTrue(!predicate.evaluate(new TestBean("bar")));
    }

    public void testNotEqual() {
        BeanPredicate predicate = 
            new BeanPredicate("stringProperty",new NotPredicate( new EqualPredicate("foo")));
        assertTrue(!predicate.evaluate(new TestBean("foo")));
        assertTrue(predicate.evaluate(new TestBean("bar")));
    }

    public void testInstanceOf() {
        BeanPredicate predicate = 
            new BeanPredicate("stringProperty",new InstanceofPredicate( String.class ));
        assertTrue(predicate.evaluate(new TestBean("foo")));
        assertTrue(predicate.evaluate(new TestBean("bar")));
    }

    public void testNull() {
        BeanPredicate predicate = 
            new BeanPredicate("stringProperty", NullPredicate.INSTANCE);
        String nullString = null;
        assertTrue(predicate.evaluate(new TestBean(nullString)));
        assertTrue(!predicate.evaluate(new TestBean("bar")));
    }

}