/*
 *  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 Alexander Y. Kleymenov
 * @version $Revision$
 */

package org.apache.harmony.tests.javax.security.cert;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PublicKey;
import java.security.SignatureException;

import javax.security.cert.Certificate;
import javax.security.cert.CertificateEncodingException;
import javax.security.cert.CertificateException;

public class CertificateTest extends TestCase {

    /**
     * The stub class used for testing of non abstract methods.
     */
    private class TBTCert extends Certificate {
        public byte[] getEncoded() throws CertificateEncodingException {
            return null;
        }

        public void verify(PublicKey key) throws CertificateException,
                NoSuchAlgorithmException, InvalidKeyException,
                NoSuchProviderException, SignatureException {
        }

        public void verify(PublicKey key, String sigProvider)
                throws CertificateException, NoSuchAlgorithmException,
                InvalidKeyException, NoSuchProviderException,
                SignatureException {
        }

        public String toString() {
            return "TBTCert";
        }

        public PublicKey getPublicKey() {
            return null;
        }
    }

    /**
     * Test for <code>Certificate()</code> constructor<br>
     */
    public final void testCertificate() {
        TBTCert tbt_cert = new TBTCert();

        assertNull("Public key should be null", tbt_cert.getPublicKey());
        assertEquals("Wrong string representation for Certificate", "TBTCert", tbt_cert.toString());
    }

    /**
     * equals(Object obj) method testing. Tests the correctness of equal
     * operation: it should be reflexive, symmetric, transitive, consistent and
     * should be false on null object.
     */
    public void testEquals() {
        TBTCert tbt_cert = new TBTCert() {
            public byte[] getEncoded() {
                return new byte[] { 1, 2, 3 };
            }
        };

        TBTCert tbt_cert_1 = new TBTCert() {
            public byte[] getEncoded() {
                return new byte[] { 1, 2, 3 };
            }
        };

        TBTCert tbt_cert_2 = new TBTCert() {
            public byte[] getEncoded() {
                return new byte[] { 1, 2, 3 };
            }
        };

        TBTCert tbt_cert_3 = new TBTCert() {
            public byte[] getEncoded() {
                return new byte[] { 3, 2, 1 };
            }
        };

        // checking for reflexive law:
        assertTrue("The equivalence relation should be reflexive.", tbt_cert
                .equals(tbt_cert));

        assertEquals(
                "The Certificates with equal encoded form should be equal",
                tbt_cert, tbt_cert_1);
        // checking for symmetric law:
        assertTrue("The equivalence relation should be symmetric.", tbt_cert_1
                .equals(tbt_cert));

        assertEquals(
                "The Certificates with equal encoded form should be equal",
                tbt_cert_1, tbt_cert_2);
        // checking for transitive law:
        assertTrue("The equivalence relation should be transitive.", tbt_cert
                .equals(tbt_cert_2));

        assertFalse("Should not be equal to null object.", tbt_cert
                .equals(null));

        assertFalse("The Certificates with differing encoded form "
                + "should not be equal", tbt_cert.equals(tbt_cert_3));
        assertFalse("The Certificates should not be equals to the object "
                + "which is not an instance of Certificate", tbt_cert
                .equals(new Object()));
    }

    /**
     * hashCode() method testing.
     */
    public void testHashCode() {
        TBTCert tbt_cert = new TBTCert() {
            public byte[] getEncoded() {
                return new byte[] { 1, 2, 3 };
            }
        };
        TBTCert tbt_cert_1 = new TBTCert() {
            public byte[] getEncoded() {
                return new byte[] { 1, 2, 3 };
            }
        };

        assertTrue("Equal objects should have the same hash codes.", tbt_cert
                .hashCode() == tbt_cert_1.hashCode());
    }

    public static Test suite() {
        return new TestSuite(CertificateTest.class);
    }
}