testpredicatedcollection.java

iBATIS似乎已远离众说纷纭的OR框架之列

/*
 * Copyright 1999-2004 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.collections;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;


public abstract class TestPredicatedCollection extends BulkTest {

    public TestPredicatedCollection(String name) {
        super(name);
    }


    protected abstract Collection predicatedCollection();

    protected Predicate getPredicate() {
        return new Predicate() {
            public boolean evaluate(Object o) {
                return o instanceof String;
            }
        };
    }


    public void testIllegalAdd() {
        Collection c = predicatedCollection();
        Integer i = new Integer(3);
        try {
            c.add(i);
            fail("Integer should fail string predicate.");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains(i));   
    }


    public void testIllegalAddAll() {
        Collection c = predicatedCollection();
        List elements = new ArrayList();
        elements.add("one");
        elements.add("two");
        elements.add(new Integer(3));
        elements.add("four");
        try {
            c.addAll(elements);
            fail("Integer should fail string predicate.");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains("one"));   
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains("two"));   
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains(new Integer(3)));   
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains("four"));   
    }

}