support/src/test/java/tests/support/Support_UnmodifiableCollectionTest.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
 *
 *     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 tests.support;

import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.SortedSet;
import java.util.TreeSet;
import junit.framework.TestCase;

public class Support_UnmodifiableCollectionTest extends TestCase {

    Collection<Integer> col;

    // must be a collection containing the Integers 0 to 99 (which will iterate
    // in order)

    public Support_UnmodifiableCollectionTest(String p1) {
        super(p1);
    }

    public Support_UnmodifiableCollectionTest(String p1, Collection<Integer> c) {
        super(p1);
        col = c;
    }

    @Override
    public void runTest() {

        // contains
        assertTrue("UnmodifiableCollectionTest - should contain 0", col
                .contains(new Integer(0)));
        assertTrue("UnmodifiableCollectionTest - should contain 50", col
                .contains(new Integer(50)));
        assertTrue("UnmodifiableCollectionTest - should not contain 100", !col
                .contains(new Integer(100)));

        // containsAll
        HashSet<Integer> hs = new HashSet<Integer>();
        hs.add(new Integer(0));
        hs.add(new Integer(25));
        hs.add(new Integer(99));
        assertTrue(
                "UnmodifiableCollectionTest - should contain set of 0, 25, and 99",
                col.containsAll(hs));
        hs.add(new Integer(100));
        assertTrue(
                "UnmodifiableCollectionTest - should not contain set of 0, 25, 99 and 100",
                !col.containsAll(hs));

        // isEmpty
        assertTrue("UnmodifiableCollectionTest - should not be empty", !col
                .isEmpty());

        // iterator
        Iterator<Integer> it = col.iterator();
        SortedSet<Integer> ss = new TreeSet<Integer>();
        while (it.hasNext()) {
            ss.add(it.next());
        }
        it = ss.iterator();
        for (int counter = 0; it.hasNext(); counter++) {
            int nextValue = it.next().intValue();
            assertTrue(
                    "UnmodifiableCollectionTest - Iterator returned wrong value.  Wanted: "
                            + counter + " got: " + nextValue,
                    nextValue == counter);
        }

        // size
        assertTrue(
                "UnmodifiableCollectionTest - returned wrong size.  Wanted 100, got: "
                        + col.size(), col.size() == 100);

        // toArray
        Object[] objArray;
        objArray = col.toArray();
        for (int counter = 0; it.hasNext(); counter++) {
            assertTrue(
                    "UnmodifiableCollectionTest - toArray returned incorrect array",
                    objArray[counter] == it.next());
        }

        // toArray (Object[])
        objArray = new Object[100];
        col.toArray(objArray);
        for (int counter = 0; it.hasNext(); counter++) {
            assertTrue(
                    "UnmodifiableCollectionTest - toArray(Object) filled array incorrectly",
                    objArray[counter] == it.next());
        }

    }

}