Unit Test Help. How do I test for a message output to console?

Question

I am a newbie to unit testing. How do I check the for console output? I have

namespace XXShapes
{
    public abstract class XXShape
    {
        public virt         


        

Answer 1

You don't need to test 'Console.WriteLine' routine because you have to assume it works - it is not your code, so why do you want to test it. You need to test whether you produce correct string that is passed to 'Console.WriteLine'

In other words, instead of:

public override void DrawXXShape()
{
    Console.WriteLine("The XXCircle was drawn.");
}

you could do:

public override void DrawXXShape()
{
    Console.WriteLine(produceXxCircle());
}

public string produceXxCircle()
{
    return "The XXCircle was drawn.";
}

and then in the test case:

Assert.AreEqual(produceXxCircle(), "The XXCircle was drawn.");

Hope it helps. Regads Simon