modules/security/src/test/impl/java/org/apache/harmony/security/tests/java/security/PermissionCollection_ImplTest.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 org.apache.harmony.security.tests.java.security;

import java.security.Permission;
import java.security.PermissionCollection;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;

import junit.framework.TestCase;

/**
 * Tests for <code>PermissionCollection</code>
 */
public class PermissionCollection_ImplTest extends TestCase {
    // Bare extension to instantiate abstract PermissionCollection class
    private static final class RealPermissionCollection extends
            PermissionCollection {
        final private Collection col;

        public RealPermissionCollection(Collection<Permission> col) {
            this.col = col;
        }

        public void add(Permission permission) {
        }

        public Enumeration<Permission> elements() {
            return col == null ? null : Collections.enumeration(col);
        }

        public boolean implies(Permission permission) {
            return false;
        }
    }

    /** Test toString() transformation with different elements. */
    public void testToString() {
        // no elements
        PermissionCollection pc = new RealPermissionCollection(null);
        try {
            assertNotNull("No elements", pc.toString());
        } catch (NullPointerException e) {
            // Allowed
        }

        // several elements
        List<Permission> bpList = new ArrayList<Permission>();
        bpList.add(new RuntimePermission("aaa"));
        bpList.add(new RuntimePermission("bbb"));
        bpList.add(new RuntimePermission("ccc"));
        String pcString = new RealPermissionCollection(bpList).toString();
        assertTrue("Failed to find aaa", pcString.contains("aaa"));
        assertTrue("Failed to find bbb", pcString.contains("bbb"));
        assertTrue("Failed to find ccc", pcString.contains("ccc"));
    }
}