mitm.common.util.MiscArrayUtilsTest.java Source code

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Here is the source code for mitm.common.util.MiscArrayUtilsTest.java

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/*
 * Copyright (c) 2008-2011, Martijn Brinkers, Djigzo.
 * 
 * This file is part of Djigzo email encryption.
 *
 * Djigzo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License 
 * version 3, 19 November 2007 as published by the Free Software 
 * Foundation.
 *
 * Djigzo is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public 
 * License along with Djigzo. If not, see <http://www.gnu.org/licenses/>
 *
 * Additional permission under GNU AGPL version 3 section 7
 * 
 * If you modify this Program, or any covered work, by linking or 
 * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, 
 * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, 
 * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, 
 * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, 
 * wsdl4j-1.6.1.jar (or modified versions of these libraries), 
 * containing parts covered by the terms of Eclipse Public License, 
 * tyrex license, freemarker license, dom4j license, mx4j license,
 * Spice Software License, Common Development and Distribution License
 * (CDDL), Common Public License (CPL) the licensors of this Program grant 
 * you additional permission to convey the resulting work.
 */
package mitm.common.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import org.apache.commons.lang.StringUtils;
import org.junit.Test;

public class MiscArrayUtilsTest {
    @Test
    public void testCompareEqualSizeArray() {
        byte[] a = new byte[] { (byte) 1, (byte) 2, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 2, (byte) 3 };

        assertEquals(0, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testCompareDiffRightEqualSizeArray() {
        byte[] a = new byte[] { (byte) 1, (byte) 2, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 4, (byte) 3 };

        assertEquals(-1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testCompareDiffLeftEqualSizeArray() {
        byte[] a = new byte[] { (byte) 1, (byte) 4, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 2, (byte) 3 };

        assertEquals(1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testSizeDiffLeftSmallerArray() {
        byte[] a = new byte[] { (byte) 1, (byte) 2 };
        byte[] b = new byte[] { (byte) 1, (byte) 2, (byte) 3 };

        assertEquals(-1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testSizeDiffLeftSmallerArrayNeg() {
        byte[] a = new byte[] { (byte) 1, (byte) 2 };
        byte[] b = new byte[] { (byte) 1, (byte) 3, (byte) 3 };

        assertEquals(-1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testSizeDiffLeftSmallerArrayPos() {
        byte[] a = new byte[] { (byte) 1, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 2, (byte) 3 };

        assertEquals(1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testSizeDiffLeftSmallerArray2() {
        byte[] a = new byte[] { (byte) 1, (byte) 2, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 2 };

        assertEquals(1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testSizeDiffLeftSmallerArrayNeg2() {
        byte[] a = new byte[] { (byte) 1, (byte) 3, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 2 };

        assertEquals(1, MiscArrayUtils.compareArray(a, b));
    }

    @Test
    public void testSizeDiffLeftSmallerArrayPos2() {
        byte[] a = new byte[] { (byte) 1, (byte) 2, (byte) 3 };
        byte[] b = new byte[] { (byte) 1, (byte) 3 };

        assertEquals(-1, MiscArrayUtils.compareArray(a, b));
    }

    private void assertClear(char[] array) {
        for (char c : array) {
            assertTrue(c == 0);
        }
    }

    @Test
    public void clearTest() {
        assertClear(MiscArrayUtils.clear("test".toCharArray()));
        assertClear(MiscArrayUtils.clear("".toCharArray()));
        assertNull(MiscArrayUtils.clear(null));
    }

    private void testMaxRadix(byte[] bytes) {
        String radix = MiscArrayUtils.toMaxRadix(bytes);

        assertFalse(StringUtils.startsWith(radix, "-"));

        byte[] fromString = MiscArrayUtils.fromMaxRadix(radix);

        assertEquals(0, MiscArrayUtils.compareArray(bytes, fromString));
    }

    @Test
    public void testMaxRadix() {
        testMaxRadix(new byte[] { -127, -64, -32, -16, -8, -4, -2, -1, 0, 1, 2, 4, 8, 16, 32, 64, 127 });
        testMaxRadix(new byte[] { 1, 2, 3 });
        testMaxRadix(new byte[] { 127 });
        testMaxRadix(new byte[] { 0, 0, 1 });
        testMaxRadix(new byte[] { 0, 0, 0 });
        testMaxRadix(new byte[] {});
    }

    @Test
    public void testSafeGet() {
        assertEquals("1", MiscArrayUtils.safeGet(new String[] { "1", "2" }, 0));
        assertEquals("1", MiscArrayUtils.safeGet(new String[] { "1" }, 0));
        assertEquals(null, MiscArrayUtils.safeGet(new String[] { null }, 0));
        assertEquals("2", MiscArrayUtils.safeGet(new String[] { "1", "2" }, 1));
        assertNull(MiscArrayUtils.safeGet(new String[] { "1", "2" }, 2));
        assertNull(MiscArrayUtils.safeGet(new String[] { "1", "2" }, -1));
        assertNull(MiscArrayUtils.safeGet(null, 0));
    }
}