import junit.framework.TestCase;
import junit.framework.Assert;

public class MyMathTest extends TestCase
{
    public void testAbsNegative()
    {
        // Purpose:  test that abs() works for a value < 0.

        int testValueX; // Test data for calling method
        int expected;   // Value we expect to see as result
        int actual;     // Actual value that method returns
        
        // Test data for method
        
        testValueX = -4;
        
        // Expected and actual results
        
        expected = 4;
        actual = MyMath.abs( testValueX );
        
        // Check if we have expected results
        
        Assert.assertEquals( expected, actual );
    }   

    public void testAbsPositive()
    {
        // Purpose:  produce a 'fail' result.

        int testValueX; // Test data for calling method
        int expected;   // Value we expect to see as result
        int actual;     // Actual value that method returns
        
        // Test data for method
        
        testValueX = 4;
        
        // Expected and actual results
        
        expected = 4;
        actual = MyMath.abs( testValueX );
        
        // Check if we have expected results
        
        Assert.assertEquals( expected, actual );
    }

}