/*
 *  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.
 */

/**
 * @author Alexey V. Varlamov
 */

package org.ietf.jgss;

import java.security.Provider;
import java.security.Security;

import junit.framework.TestCase;


/**
 * Tests GSSManager class
 */
public class GSSManagerTest extends TestCase {
    /**
     * Tests loading of a default provider with valid class references.
     */
    public void testGetInstance_valid() {
        String oldProvider = Security.getProperty(GSSManager.MANAGER);
        try {
            Security.setProperty(GSSManager.MANAGER, TestManager.class
                .getName());
            GSSManager m = GSSManager.getInstance();
            assertNotNull(m);
            assertEquals(TestManager.class.getName(), m.getClass().getName());
        } finally {
            Security.setProperty(GSSManager.MANAGER, (oldProvider == null) ? ""
                : oldProvider);
        }
    }
    
    /**
     * Tests loading of a default provider with invalid class references.
     */
    public void testGetInstance_invalid() {
        String oldProvider = Security.getProperty(GSSManager.MANAGER);
        try {
            try {
                Security.setProperty(GSSManager.MANAGER, "a.b.c.D");
                GSSManager.getInstance();
                fail("should throw SecurityException for invalid klass");
            } catch (SecurityException ok) {
            }
            try {
                Security.setProperty(GSSManager.MANAGER, "");
                GSSManager.getInstance();
                fail("should throw SecurityException for empty klass");
            } catch (SecurityException ok) {
            }
        } finally {
            Security.setProperty(GSSManager.MANAGER, (oldProvider == null) ? ""
                : oldProvider);
        }
    }

    public static class TestManager extends GSSManager {

        @Override
        public void addProviderAtEnd(Provider p, Oid mech) throws GSSException {
        }

        @Override
        public void addProviderAtFront(Provider p, Oid mech)
            throws GSSException {
        }

        @Override
        public GSSContext createContext(byte[] interProcessToken)
            throws GSSException {
            return null;
        }

        @Override
        public GSSContext createContext(GSSCredential myCred)
            throws GSSException {
            return null;
        }

        @Override
        public GSSContext createContext(GSSName peer, Oid mech,
                                        GSSCredential myCred, int lifetime)
            throws GSSException {
            return null;
        }

        @Override
        public GSSCredential createCredential(GSSName name, int lifetime,
                                              Oid mech, int usage)
            throws GSSException {
            return null;
        }

        @Override
        public GSSCredential createCredential(GSSName name, int lifetime,
                                              Oid[] mechs, int usage)
            throws GSSException {
            return null;
        }

        @Override
        public GSSCredential createCredential(int usage) throws GSSException {
            return null;
        }

        @Override
        public GSSName createName(byte[] name, Oid nameType, Oid mech)
            throws GSSException {
            return null;
        }

        @Override
        public GSSName createName(byte[] name, Oid nameType)
            throws GSSException {
            return null;
        }

        @Override
        public GSSName createName(String nameStr, Oid nameType, Oid mech)
            throws GSSException {
            return null;
        }

        @Override
        public GSSName createName(String nameStr, Oid nameType)
            throws GSSException {
            return null;
        }

        @Override
        public Oid[] getMechs() {
            return null;
        }

        @Override
        public Oid[] getMechsForName(Oid nameType) {
            return null;
        }

        @Override
        public Oid[] getNamesForMech(Oid mech) throws GSSException {
            return null;
        }
    }
}