xref: /external/apache-harmony/crypto/src/test/impl/java.injected/org/apache/harmony/crypto/internal/NullCipherSpiTest.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.
 */

/**
 * @author Boris V. Kuznetsov
 */

package org.apache.harmony.crypto.internal;

import java.nio.ByteBuffer;
import java.util.Arrays;

import javax.crypto.ShortBufferException;

import org.apache.harmony.crypto.internal.NullCipherSpi;
import junit.framework.TestCase;

/**
 * Tests for NullCipher implementation
 */
public class NullCipherSpiTest extends TestCase {

    public void testEngineGetBlockSize() {
        NullCipherSpi spi = new NullCipherSpi();
        assertEquals("incorrect block size", 1, spi.engineGetBlockSize());
    }

    public void testEngineGetOutputSize() {
        NullCipherSpi spi = new NullCipherSpi();
        assertEquals("incorrect output size", 100, spi.engineGetOutputSize(100));
    }

    public void testEngineGetIV() {
        NullCipherSpi spi = new NullCipherSpi();
        assertTrue("Incorrect IV", Arrays.equals(spi.engineGetIV(), new byte[8]));
    }

    /*
      * Class under test for byte[] engineUpdate(byte[], int, int)
      */
    public void testEngineUpdatebyteArrayintint() {
        NullCipherSpi spi = new NullCipherSpi();
        byte[] b = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        byte[] b1 = spi.engineUpdate(b, 3, 4);
        for (int i = 0; i < 4; i++) {
            assertEquals("incorrect update result", b[3 + i], b1[i]);
        }
    }

    /*
      * Class under test for int engineUpdate(byte[], int, int, byte[], int)
      */
    public void testEngineUpdatebyteArrayintintbyteArrayint() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        byte[] b = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        byte[] b1 = new byte[10];
        assertEquals("incorrect update result", 4, spi.engineUpdate(b, 3, 4, b1, 5));
        for (int i = 0; i < 4; i++) {
            assertEquals("incorrect update result", b[3 + i], b1[5 + i]);
        }
    }

    /*
      * Class under test for byte[] engineDoFinal(byte[], int, int)
      */
    public void testEngineDoFinalbyteArrayintint() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        byte[] b = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        byte[] b1 = null;
        b1 = spi.engineDoFinal(b, 3, 4);
        for (int i = 0; i < 4; i++) {
            assertEquals("incorrect doFinal result", b[3 + i], b1[i]);
        }
    }

    /*
      * Class under test for int engineDoFinal(byte[], int, int, byte[], int)
      */
    public void testEngineDoFinalbyteArrayintintbyteArrayint() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        byte[] b = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        byte[] b1 = new byte[10];
        assertEquals("incorrect doFinal result", 4, spi.engineDoFinal(b, 3, 4, b1, 5));
        for (int i = 0; i < 4; i++) {
            assertEquals("incorrect doFinal result", b[3 + i], b1[5 + i]);
        }

    }

    /*
      * Class under test for int engineUpdate(ByteBuffer, ByteBuffer)
      */
    public void testEngineUpdateByteBufferByteBuffer() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        byte[] b = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

        ByteBuffer inbuf = ByteBuffer.wrap(b, 0, b.length);
        ByteBuffer outbuf = ByteBuffer.allocate(6);

        try {
            spi.engineUpdate(null, outbuf);
            fail("No expected NullPointerException");
        } catch (NullPointerException e) {
        }

        try {
            spi.engineUpdate(inbuf, null);
            fail("No expected NullPointerException");
        } catch (NullPointerException e) {
        }

        inbuf.get();
        inbuf.get();
        inbuf.get();
        inbuf.get();
        int result = spi.engineUpdate(inbuf, outbuf);
        assertEquals("incorrect result", b.length - 4, result);
        for (int i = 0; i < result; i++) {
            assertEquals("incorrect outbuf", i + 4, outbuf.get(i));
        }

        inbuf = ByteBuffer.wrap(b, 0, b.length);
        outbuf = ByteBuffer.allocate(5);
        inbuf.get();
        inbuf.get();
        inbuf.get();
        inbuf.get();
        try {
            spi.engineUpdate(inbuf, outbuf);
            fail("No expected ShortBufferException");
        } catch (ShortBufferException e) {
        }
    }

    /*
      * Class under test for int engineDoFinal(ByteBuffer, ByteBuffer)
      */
    public void testEngineDoFinalByteBufferByteBuffer() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        byte[] b = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

        ByteBuffer inbuf = ByteBuffer.wrap(b, 0, b.length);
        ByteBuffer outbuf = ByteBuffer.allocate(6);

        try {
            spi.engineDoFinal(null, outbuf);
            fail("No expected NullPointerException");
        } catch (NullPointerException e) {
        }

        try {
            spi.engineDoFinal(inbuf, null);
            fail("No expected NullPointerException");
        } catch (NullPointerException e) {
        }

        inbuf.get();
        inbuf.get();
        inbuf.get();
        inbuf.get();
        int result = spi.engineDoFinal(inbuf, outbuf);
        assertEquals("incorrect result", b.length - 4, result);
        for (int i = 0; i < result; i++) {
            assertEquals("incorrect outbuf", i + 4, outbuf.get(i));
        }

        inbuf = ByteBuffer.wrap(b, 0, b.length);
        outbuf = ByteBuffer.allocate(5);
        inbuf.get();
        inbuf.get();
        inbuf.get();
        inbuf.get();
        try {
            spi.engineDoFinal(inbuf, outbuf);
            fail("No expected ShortBufferException");
        } catch (ShortBufferException e) {
        }
    }

    /*
      * Class under test for byte[] engineWrap(Key)
      */
    public void testEngineWrapKey() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        try {
            spi.engineWrap(null);
            fail("No expected UnsupportedOperationException");
        } catch (UnsupportedOperationException e) {
        }
    }

    /*
      * Class under test for Key engineUnwrap(byte[], String, int)
      */
    public void testEngineUnwrapbyteArrayStringint() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        try {
            spi.engineUnwrap(new byte[3], "", 10);
            fail("No expected UnsupportedOperationException");
        } catch (UnsupportedOperationException e) {
        }
    }

    /*
      * Class under test for int engineGetKeySize(Key)
      */
    public void testEngineGetKeySize() throws Exception {
        NullCipherSpi spi = new NullCipherSpi();
        try {
            spi.engineGetKeySize(null);
            fail("No expected UnsupportedOperationException");
        } catch (UnsupportedOperationException e) {
        }
    }

}