Test methods have names like testFoo
Test results are verified by assertEquals()
A simple test for addition:
public void testAdd() {
Complex z1 = new Complex(1, 1);
Complex z2 = new Complex(1, 1);
Complex z3 = z1.add(z2);
assertEquals(2, z3.getRealPart());
assertEquals(2, z3.getImaginaryPart());
}
Let's look at this in Eclipse