import junit.framework.*;

// A demonstration of JUnit testing
public class RationalTest extends TestCase
{
	Rational r1, r2;
	
	public RationalTest (String name)
	{
		super (name);
	}
	
    // Create variables to used in each test case
	protected void setUp()
	{
		r1 = new Rational(6, 8);
		r2 = new Rational(1, 3);
	}

	// Test that the "equals" method works properly
	public void testEquals()
	{
		assertTrue(r1.equals(r1));
		assertEquals(r1,r1);
		assertTrue(r1.equals(new Rational(3, 4)));
		assertEquals(r1, new Rational(3, 4));
		assertTrue(!r2.equals(r1));

        // this is less effective because it doesn't use Rational.equals
		assertTrue(r1.toString().equals("3/4"));
	}
	
	public void testOperators()
	{
		assertEquals(r1.add(r2), new Rational(13,12));
		assertEquals(r1.subtract(r2), new Rational(5,12));
		assertEquals(r1.multiply(r2), new Rational(1,4));
		assertEquals(r1.divide(r2), new Rational(9,4));
	}
	
}