RE: [TFUI] Re: [TDD] Testing Dialogs

I would create a modeless window given a choice. But I don't have a
choice.

Perhaps you are suggesting that I use a modeless window for testing,
even if the window is modal in the real program? 

I'd be really interested in an example of the semaphore technique. I
don't have a lot of experience with thread programming, none at all in
.Net really.

-Kelly

________________________________

From: [email protected]
[mailto:[email protected]] On Behalf Of Phlip
Sent: Tuesday, October 17, 2006 8:31 AM
To: [email protected]
Cc: [email protected]
Subject: [TFUI] Re: [TDD] Testing Dialogs 

Anderson, Kelly wrote:

> I have an interesting approach to testing dialogs that I don't recall 
> seeing discussed on this list before, so I thought I'd share the 
> technique. Basically, you bring the dialog up on a separate thread,
then 
> you remote control the dialog and see if you get the expected result.

> t = new Thread(new ThreadStart(OpenDialog));
> t.Start();
> Thread.Sleep(1500); // wait for dialog to come up... then run test.

Tip: Pass a testing object into the thread, and let that throw a
semaphore. 
Then block on the semaphore here.

However, in general, Dialogs often block as a programmatic convenience,
so 
the same function as calls them can collect their return value and keep 
going.

False conveniences are bad for event-driven and test-ready programming.
If 
you instead create a modeless dialog, you can disable the underlying
window, 
and get exactly the same behaviors as a modal dialog. Then your test can

stay in one thread, and can operate the event queue to send the dialog 
messages.





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