Base64Test.java

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package com.sun.jersey.core.util;

import junit.framework.TestCase;
import static junit.framework.Assert.assertTrue;
import java.util.Arrays;

/**
 *
 * @author robc
 */
public class Base64Test extends TestCase {
    
    public void testRoundtripLengthMod3Equals0() {
        byte[] data = {0, 1, 2, 3, 4, 5, 6, 7, 8};
        byte[] result = Base64.decode(Base64.encode(data));
        assertTrue("failed to roundtrip value to base64", Arrays.equals(data, result));
    }

    public void testRoundtripLengthMod3Equals1() {
        byte[] data = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        byte[] result = Base64.decode(Base64.encode(data));
        assertTrue("failed to roundtrip value to base64", Arrays.equals(data, result));
    }

    public void testRoundtripLengthMod3Equals2() {
        byte[] data = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
        byte[] result = Base64.decode(Base64.encode(data));
        assertTrue("failed to roundtrip value to base64", Arrays.equals(data, result));
    }

    public void testRoundtripOneByteGreaterThan127() {
        byte[] data = {(byte)128};
        byte[] result = Base64.decode(Base64.encode(data));
        assertTrue("failed to roundtrip value to base64", Arrays.equals(data, result));
    }

    public void testRoundtripAssortedValues() {
        byte[] data = {0, 1, 63, 64, 65, (byte)127, (byte)128, (byte)1299, (byte)254, (byte)255};
        byte[] result = Base64.decode(Base64.encode(data));
        assertTrue("failed to roundtrip value to base64", Arrays.equals(data, result));
    }

    public void testEncodeByteArray() {
        String expectedResult = "//79/Pv6+fj39vX08/Lx8O/u7ezr6uno5+bl5OPi4eDf3t3c29rZ2NfW1dTT0tHQz87NzMvKycjHxsXEw8LBwL++vby7urm4t7a1tLOysbCvrq2sq6qpqKempaSjoqGgn56dnJuamZiXlpWUk5KRkI+OjYyLiomIh4aFhIOCgYB/fn18e3p5eHd2dXRzcnFwb25tbGtqaWhnZmVkY2JhYF9eXVxbWllYV1ZVVFNSUVBPTk1MS0pJSEdGRURDQkFAPz49PDs6OTg3NjU0MzIxMC8uLSwrKikoJyYlJCMiISAfHh0cGxoZGBcWFRQTEhEQDw4NDAsKCQgHBgUEAwIBAA==";
        byte[] data = new byte[256];
        for (int i = 0; i < 256; ++i) {
            data[i] = (byte)(255 - i);
        }
        String result = new String(Base64.encode(data));
        assertEquals("incorrect value", result, expectedResult);
    }
    
    public void testDecodeString() {
        String data = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==";
        byte[] result = Base64.decode(data);
        assertEquals("incorrect length", result.length, 256);
        for (int i = 0; i < 256; ++i) {
            assertEquals("incorrect value", result[i], (byte)i);
        }
    }
}