Re: Simple Bouncing Ball Demo

Kaoru Hosokawa wrote:

> When I write apps with GUI, I just can't wait to see
> what the graphic 
> output looks like and so I tend to do as you do -
> write a bit of model 
> and also a bit of the GUI. I also try to TDD the
> GUI. For your example, 
> I would write a test like this. This is a test to
> test the creation of 
> the PongPanel. You seem to do some setup in the
> constructor and with 
> this test  you can make sure that the setup is OK.

When I TDD GUIs, I also can't wait to see what the
graphical output looks like. So I often add a line
like this:

> 	public void testCreatePongPanel() {
> 		PongPanel pongPanel = new PongPanel();
> 		assertEquals(Color.yellow,
> pongPanel.getBackground());
> 		// ...
> 		assertTrue(pongPanel.isDoubleBuffered());

    reveal(pongPanel);

> 	}

For each kind of GUI Toolkit, I research how to write
a robust temporary test function called "reveal()".
Then when I run that test suite, the window pops up in
its tested state. I can visually confirm that an
assertion on a graphical state is on-track.

Then I comment out the "reveal()" before integration.


=====
Phlip
  http://industrialxp.org/community/bin/view/Main/TestFirstUserInterfaces


		
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