/*
 *  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 Vladimir N. Molotkov
 */

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

import java.security.NoSuchAlgorithmException;
import java.security.PublicKey;
import java.security.cert.PKIXCertPathValidatorResult;
import java.security.cert.PolicyNode;
import java.security.cert.TrustAnchor;
import java.security.spec.InvalidKeySpecException;

import junit.framework.TestCase;

import org.apache.harmony.security.tests.support.cert.TestUtils;

/**
 * Tests for <code>PKIXCertPathValidatorResult</code>
 */
public class PKIXCertPathValidatorResultTest extends TestCase {
    /**
     * PublicKey stub
     */
    private static PublicKey testPublicKey = new PublicKey() {
        public String getAlgorithm() {
            return "NeverMind";
        }

        public String getFormat() {
            return "NeverMind";
        }

        public byte[] getEncoded() {
            return new byte[] { };
        }
    };

    /**
     * Constructor for PKIXCertPathValidatorResultTest.
     *
     * @param name
     */
    public PKIXCertPathValidatorResultTest(String name) {
        super(name);
    }

    //
    // Tests
    //

    /**
     * Test #1 for <code>PKIXCertPathValidatorResult(TrustAnchor,
     * PolicyNode, PublicKey)</code> constructor<br>
     * Assertion: creates an instance of
     * <code>PKIXCertPathValidatorResult</code>
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testPKIXCertPathValidatorResult01()
            throws InvalidKeySpecException,
            NoSuchAlgorithmException {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }
        new PKIXCertPathValidatorResult(
                ta,
                TestUtils.getPolicyTree(),
                testPublicKey);
    }

    /**
     * Test #2 for <code>PKIXCertPathValidatorResult(TrustAnchor,
     * PolicyNode, PublicKey)</code> constructor<br>
     * Assertion: <code>NullPointerException</code> if
     * <code>TrustAnchor</code> parameter is <code>null</code>
     */
    public final void testPKIXCertPathValidatorResult02() {
        try {
            // pass null
            new PKIXCertPathValidatorResult(
                    null,
                    TestUtils.getPolicyTree(),
                    testPublicKey);
            fail("NPE expected");
        } catch (NullPointerException e) {
        }
    }

    /**
     * Test #3 for <code>PKIXCertPathValidatorResult(TrustAnchor,
     * PolicyNode, PublicKey)</code> constructor<br>
     * Assertion: <code>NullPointerException</code> if
     * <code>PublicKey</code> parameter is <code>null</code>
     */
    public final void testPKIXCertPathValidatorResult03() {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }
        try {
            // pass null
            new PKIXCertPathValidatorResult(
                    ta,
                    TestUtils.getPolicyTree(),
                    null);
            fail("NPE expected");
        } catch (NullPointerException e) {
        }
    }

    /**
     * Test #4 for <code>PKIXCertPathValidatorResult(TrustAnchor,
     * PolicyNode, PublicKey)</code> constructor<br>
     * Assertion: <code>PolicyNode</code>can be <code>null</code>
     */
    public final void testPKIXCertPathValidatorResult04() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        new PKIXCertPathValidatorResult(
                ta,
                null,
                testPublicKey);
    }

    /**
     * Test for <code>getTrustAnchor()</code> method<br>
     * Assertion: returns <code>TrustAnchor</code> (never <code>null</code>)
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testGetTrustAnchor() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        PKIXCertPathValidatorResult vr =
                new PKIXCertPathValidatorResult(
                        ta,
                        null,
                        testPublicKey);

        // must return the same reference passed
        // as a parameter to the constructor
        assertSame(ta, vr.getTrustAnchor());
    }

    /**
     * Test for <code>getPublicKey()</code> method<br>
     * Assertion: returns the subject's public key (never <code>null</code>)
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testGetPublicKey() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        PublicKey pk = testPublicKey;
        PKIXCertPathValidatorResult vr =
                new PKIXCertPathValidatorResult(
                        ta,
                        null,
                        pk);

        // must return the same reference passed
        // as a parameter to the constructor
        assertSame(pk, vr.getPublicKey());
    }

    /**
     * Test for <code>getPolicyTree()</code> method<br>
     * Assertion: returns the root node of the valid
     * policy tree or <code>null</code> if there are
     * no valid policies
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testGetPolicyTree01() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        // valid policy tree case;
        PolicyNode pn = TestUtils.getPolicyTree();
        PKIXCertPathValidatorResult vr =
                new PKIXCertPathValidatorResult(
                        ta,
                        pn,
                        testPublicKey);

        // must return the same reference passed
        // as a parameter to the constructor
        assertSame(pn, vr.getPolicyTree());
    }

    /**
     * Test for <code>getPolicyTree()</code> method<br>
     * Assertion: returns the root node of the valid
     * policy tree or <code>null</code> if there are
     * no valid policies
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testGetPolicyTree02() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        // no valid policy tree case (null)
        PKIXCertPathValidatorResult vr =
                new PKIXCertPathValidatorResult(
                        ta,
                        null,
                        testPublicKey);

        // must return the same reference passed
        // as a parameter to the constructor
        assertNull(vr.getPolicyTree());
    }

    /**
     * Test for <code>clone()</code> method<br>
     * Assertion: returns a copy of this object
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testClone() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        PKIXCertPathValidatorResult vr1 =
                new PKIXCertPathValidatorResult(
                        ta,
                        TestUtils.getPolicyTree(),
                        testPublicKey);

        PKIXCertPathValidatorResult vr2 =
                (PKIXCertPathValidatorResult) vr1.clone();

        // check that method makes shallow copy
        assertNotSame("notSame", vr1, vr2);
        assertSame("trustAncor", vr1.getTrustAnchor(), vr2.getTrustAnchor());
        assertSame("policyTree", vr1.getPolicyTree(), vr2.getPolicyTree());
        assertSame("publicKey", vr1.getPublicKey(), vr2.getPublicKey());

        // Regression for HARMONY-2786.
        byte[] encoding = { 0x01 };
        MyPKIXCertPathBuilderResult my = new MyPKIXCertPathBuilderResult(ta,
                TestUtils.getPolicyTree(), testPublicKey, encoding);
        MyPKIXCertPathBuilderResult myClone = (MyPKIXCertPathBuilderResult) my
                .clone();
        assertSame(my.getPolicyTree(), myClone.getPolicyTree());
        assertSame(my.getPublicKey(), myClone.getPublicKey());
        assertSame(my.getTrustAnchor(), myClone.getTrustAnchor());
        assertSame(my.enc, myClone.enc);
    }

    class MyPKIXCertPathBuilderResult extends PKIXCertPathValidatorResult {

        public byte[] enc; // byte array is cloneable

        public MyPKIXCertPathBuilderResult(TrustAnchor trustAnchor,
                PolicyNode policyTree, PublicKey subjectPublicKey, byte[] enc) {
            super(trustAnchor, policyTree, subjectPublicKey);

            this.enc = enc;
        }
    }

    /**
     * Test #1 for <code>toString()</code> method<br>
     * Assertion: Returns a formatted string describing this object
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testToString01() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        PKIXCertPathValidatorResult vr =
                new PKIXCertPathValidatorResult(
                        ta,
                        TestUtils.getPolicyTree(),
                        testPublicKey);

        assertNotNull(vr.toString());
    }

    /**
     * Test #2 for <code>toString()</code> method<br>
     * Assertion: Returns a formatted string describing this object
     *
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public final void testToString02() throws Exception {
        TrustAnchor ta = TestUtils.getTrustAnchor();
        if (ta == null) {
            fail(getName() + ": not performed (could not create test TrustAnchor)");
        }

        PKIXCertPathValidatorResult vr =
                new PKIXCertPathValidatorResult(
                        ta,
                        null,
                        testPublicKey);

        assertNotNull(vr.toString());
    }

}