is it possible to know if an alert dialog box has opened in app designer app?(testing purposes)

I have a loop that loads data form a dropdown list. For some values an alert dialog box is created that says that the data couldnt load due to some whatever reasons. If the alert dialog box is opened I would like

1. to skip the iteration without making the verification test

2. dismissAlertDialog

So is that possible?

Thanks in advance

Answer 1

[Bruno Luong]

Check out function ishandle

Answer 2

[Geoff Hayes]

Michaela - if your code launches the alert dialog, then you should be able to know that it has launched and so can "skip the iteration without making the verification test". You can dismiss the dialog if you save the handle to it. For example, from warning dialog you can do

hWarnDlg = warndlg('Uh oh','Warning');

and then close it with

close(hWarnDlg);

though you will have to be careful in case the user closes the dialog which would make hWarnDlg invalid.

[Michaela Konstantinou]

I may not have been clear sorry, I want to test the behaviour of an existing app designer app. I couldn't know if an alert is launched because the input is random (and I wouldn't want to know, I just want to know it when it happens so that I can continue to another input or test if the value of an edit field is set correctly)

[Geoff Hayes]

So you want to somehow listen to see if an alert has been generated from the running app but listen outside of the app?

[Michaela Konstantinou]

Something like that, I have access to all app's components. (the tests are written with uitest framework)

[Bruno Luong]

Store the handle of the alert box in your App properties, then test if the box is still opened with ishandle() function

[Image Analyst]

Not sure why you just don't popup the message in the first place, like I suggested in my Answer.

[Michaela Konstantinou]

Thank uou Bruno, that should be a solution

[Michaela Konstantinou]

@Image Analyst I could not change the way the confirmation and alert dialog boxes appear since I am not the app's developer. I just want to test the app and uitest framework has some limitations referring the dialog boxes (you cannot perfom choose or press gesture on dialog boxes)

[Image Analyst]

Then you will not be able to store the handle to the dialog box like this answer suggested:

hWarnDlg = warndlg('Uh oh','Warning');  % Not possible without access to sourcee code

[Michaela Konstantinou]

That's true but I can ask them to store the handlers. I dont think they would want to change the app's architecture or the UX.

[Bruno Luong]

It's still possible if the Alert box has distinctive characteristic:

warndlg('Uh oh','Alert','non-modal');
pause(3)
hWarnDlg = findall(0,'Name','Alert'); delete(hWarnDlg)

[Michaela Konstantinou]

I just used timer, matlab.uitest.unlock and java.awt.robot for pressing enter for now. I will also check your reccomendations, thank you

Answer 3

[Image Analyst]

You can set some flag, like "inBatchMode" to true or false and then only show the warning popup message if the flag is set to false, like

if ~inBatchMode
    % Only show popup message if not in batch processing mode.  
    % Only show in interactive mode.  Tell them what file was missing or
    % bad.
    warningMessage = sprintf('Error reading file %s', fullFileName);
    uiwait(warndlg(warningMessage));
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