src/tests/junit/org/apache/tools/ant/util/CollectionUtilsTest.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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
 *
 *      https://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.tools.ant.util;

import java.util.Hashtable;
import java.util.Properties;
import java.util.Stack;
import java.util.Vector;

import org.junit.Test;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

/**
 * Tests for org.apache.tools.ant.util.CollectionUtils.
 *
 */
public class CollectionUtilsTest {


    @Test
    public void testVectorEquals() {
        assertFalse(CollectionUtils.equals(null, new Vector()));
        assertFalse(CollectionUtils.equals(new Vector(), null));
        assertTrue(CollectionUtils.equals(new Vector(), new Vector()));
        Vector<String> v1 = new Vector<>();
        Stack<String> s2 = new Stack<>();
        v1.addElement("foo");
        s2.push("foo");
        assertTrue(CollectionUtils.equals(v1, s2));
        assertTrue(CollectionUtils.equals(s2, v1));
        v1.addElement("bar");
        assertFalse(CollectionUtils.equals(v1, s2));
        assertFalse(CollectionUtils.equals(s2, v1));
        s2.push("bar");
        assertTrue(CollectionUtils.equals(v1, s2));
        assertTrue(CollectionUtils.equals(s2, v1));
        s2.push("baz");
        assertFalse(CollectionUtils.equals(v1, s2));
        assertFalse(CollectionUtils.equals(s2, v1));
        v1.addElement("baz");
        assertTrue(CollectionUtils.equals(v1, s2));
        assertTrue(CollectionUtils.equals(s2, v1));
        v1.addElement("zyzzy");
        s2.push("zyzzy2");
        assertFalse(CollectionUtils.equals(v1, s2));
        assertFalse(CollectionUtils.equals(s2, v1));
    }

    @Test
    public void testDictionaryEquals() {
        assertFalse(CollectionUtils.equals(null, new Hashtable()));
        assertFalse(CollectionUtils.equals(new Hashtable(), null));
        assertTrue(CollectionUtils.equals(new Hashtable(), new Properties()));
        Hashtable<String, String> h1 = new Hashtable<>();
        Properties p2 = new Properties();
        h1.put("foo", "");
        p2.put("foo", "");
        assertTrue(CollectionUtils.equals(h1, p2));
        assertTrue(CollectionUtils.equals(p2, h1));
        h1.put("bar", "");
        assertFalse(CollectionUtils.equals(h1, p2));
        assertFalse(CollectionUtils.equals(p2, h1));
        p2.put("bar", "");
        assertTrue(CollectionUtils.equals(h1, p2));
        assertTrue(CollectionUtils.equals(p2, h1));
        p2.put("baz", "");
        assertFalse(CollectionUtils.equals(h1, p2));
        assertFalse(CollectionUtils.equals(p2, h1));
        h1.put("baz", "");
        assertTrue(CollectionUtils.equals(h1, p2));
        assertTrue(CollectionUtils.equals(p2, h1));
        h1.put("zyzzy", "");
        p2.put("zyzzy2", "");
        assertFalse(CollectionUtils.equals(h1, p2));
        assertFalse(CollectionUtils.equals(p2, h1));
        p2.put("zyzzy", "");
        h1.put("zyzzy2", "");
        assertTrue(CollectionUtils.equals(h1, p2));
        assertTrue(CollectionUtils.equals(p2, h1));
        h1.put("dada", "1");
        p2.put("dada", "2");
        assertFalse(CollectionUtils.equals(h1, p2));
        assertFalse(CollectionUtils.equals(p2, h1));
    }
}