TestCase.java

/**
 * Verify correct operation of the StringShifter class.
 *
 * @file TestCase.java
 * @author oz <oz@freqlabs.com>
 * @date 2013-11-17
 */

/*
Copyright 2013 Freq Labs

Licensed 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.
*/

public class TestCase
{
    public static void main(String[] args)
    {
        String cleartext = "ENCRYPTION";
        String ciphertext = "QZODKBFUAZ";

        int encode_shift = 12;
        int decode_shift = 26 - encode_shift;
        int high_shift = 29;
        int low_shift = -2;

        StringShifter shifter;
        String output;
        boolean result;


        System.out.print("Testing encode: ");

        shifter = new StringShifter(cleartext);
        output = shifter.shift(encode_shift);
        result = output.equals(ciphertext);

        if (result == true)
            System.out.println("PASS.");
        else
            System.out.printf("FAIL. Output: %s\n", output);


        System.out.print("Testing decode: ");

        shifter = new StringShifter(ciphertext);
        output = shifter.shift(decode_shift);
        result = output.equals(cleartext);

        if (result == true)
            System.out.println("PASS.");
        else
            System.out.printf("FAIL. Output: %s\n", output);


        System.out.print("Testing high shift: ");

        shifter = new StringShifter(cleartext);
        output = shifter.shift(high_shift);
        result = output.equals(cleartext);

        if (result == true)
            System.out.println("PASS.");
        else
            System.out.printf("FAIL. Output: %s\n", output);


        System.out.print("Testing low shift: ");

        output = shifter.shift(low_shift);
        result = output.equals(cleartext);

        if (result == true)
            System.out.println("PASS.");
        else
            System.out.printf("FAIL. Output: %s\n", output);


        System.out.println("Tests completed.");
    }
}