/*
 * 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 tests.security.cert;

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

import java.math.BigInteger;
import java.security.cert.CRLException;
import java.security.cert.X509CRLEntry;
import java.util.Date;
import java.util.Set;

/**
 */
public class X509CRLEntryTest extends TestCase {

    X509CRLEntry tbt_crlentry;

    /**
     * The stub class used for testing of non abstract methods.
     */
    private class TBTCRLEntry extends X509CRLEntry {
        public TBTCRLEntry() {
            super();
        }

        public Set<String> getNonCriticalExtensionOIDs() {
            return null;
        }

        public Set<String> getCriticalExtensionOIDs() {
            return null;
        }

        public byte[] getExtensionValue(String oid) {
            return null;
        }

        public boolean hasUnsupportedCriticalExtension() {
            return false;
        }

        public byte[] getEncoded() throws CRLException {
            return null;
        }

        public BigInteger getSerialNumber() {
            return null;
        }

        public Date getRevocationDate() {
            return null;
        }

        public boolean hasExtensions() {
            return false;
        }

        public String toString() {
            return null;
        }
    }

    public X509CRLEntryTest() {
        tbt_crlentry = new TBTCRLEntry() {
            public byte[] getEncoded() throws CRLException {
                return new byte[] {1, 2, 3};
            }
        };
    }

    /**
     * X509CRLEntry() method testing. Tests for creating object.
     */
    public void testX509CRLEntry() {
        TBTCRLEntry tbt_crlentry = new TBTCRLEntry();

        assertNull(tbt_crlentry.getCertificateIssuer());
        assertNull(tbt_crlentry.getCriticalExtensionOIDs());
        try {
            assertNull(tbt_crlentry.getEncoded());
        } catch (CRLException e) {
            fail("Unexpected exception " + e.getMessage());
        }
        assertNull(tbt_crlentry.getNonCriticalExtensionOIDs());
        assertNull(tbt_crlentry.getRevocationDate());

    }

    /**
     * equals(Object other) 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() {
        TBTCRLEntry tbt_crlentry_1 = new TBTCRLEntry() {
            public byte[] getEncoded() {
                return new byte[] {1, 2, 3};
            }
        };

        TBTCRLEntry tbt_crlentry_2 = new TBTCRLEntry() {
            public byte[] getEncoded() {
                return new byte[] {1, 2, 3};
            }
        };

        TBTCRLEntry tbt_crlentry_3 = new TBTCRLEntry() {
            public byte[] getEncoded() {
                return new byte[] {3, 2, 1};
            }
        };

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

        assertEquals("The CRL Entries with equals encoded form should be equal",
                                            tbt_crlentry, tbt_crlentry_1);
        // checking for symmetric law:
        assertTrue("The equivalence relation should be symmetric.",
                                            tbt_crlentry_1.equals(tbt_crlentry));

        assertEquals("The CRL Entries with equals encoded form should be equal",
                                            tbt_crlentry_1, tbt_crlentry_2);
        // checking for transitive law:
        assertTrue("The equivalence relation should be transitive.",
                                            tbt_crlentry.equals(tbt_crlentry_2));

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

        assertFalse("The CRL Entries with differing encoded form "
                                            + "should not be equal.",
                                            tbt_crlentry.equals(tbt_crlentry_3));
        assertFalse("The CRL Entries should not be equals to the object "
                                + "which is not an instance of X509CRLEntry.",
                                            tbt_crlentry.equals(new Object()));
    }

    /**
     * hashCode() method testing. Tests that for equal objects hash codes
     * are equal.
     */
    public void testHashCode() {
        TBTCRLEntry tbt_crlentry_1 = new TBTCRLEntry() {
            public byte[] getEncoded() {
                return new byte[] {1, 2, 3};
            }
        };
        assertTrue("Equal objects should have the same hash codes.",
                        tbt_crlentry.hashCode() == tbt_crlentry_1.hashCode());
    }

    /**
     * getCertificateIssuer() method testing. Tests if the method throws
     * appropriate exception.
     */
    public void testGetCertificateIssuer() {
        assertNull("The default implementation should return null.",
                tbt_crlentry.getCertificateIssuer());
    }

    public void testAbstractMethods() {
        TBTCRLEntry tbt = new TBTCRLEntry() {
            public byte[] getEncoded() {
                return new byte[] {1, 2, 3};
            }
        };

        try {
            tbt.getEncoded();
            tbt.getRevocationDate();
            tbt.getSerialNumber();
            tbt.hasExtensions();
            tbt.toString();
        } catch (Exception e) {
            fail("Unexpected exception");
        }
    }

    public static Test suite() {
        return new TestSuite(X509CRLEntryTest.class);
    }
}