Eclipse Community Forums: Eclipse Platform » Junit testing command execution?

Help

Home

Home » Eclipse Projects » Eclipse Platform » Junit testing command execution?

Show: Today's Messages :: Show Polls :: Message Navigator

Junit testing command execution? [message #334775]

Fri, 27 February 2009 05:52

Bryan Hunt

Messages: 366
Registered: July 2009

Senior Member

I'm trying to write a junit test that executes a command. When I run
the test, I get the following error:

org.eclipse.core.commands.NotEnabledException: Trying to execute the
disabled command my.command.id

My command handler is enabled when the selection count is one or more,
and I'm calling viewer.setSelection() in the unit test. The command
and handler work properly when running the UI. Any ideas on what I'm
doing wrong in the junit test?

Bryan

Report message to a moderator

Re: Junit testing command execution? [message #334784 is a reply to message #334775]

Fri, 27 February 2009 14:20

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

if your viewer is the ISelectionProvider for your site (usually done
with getSite().setSelectionProvider(viewer) in createPartControl(*)) it
would normally be OK.

When you set the selection, the selection provider updates the
"selection" variable which causes the IEvaluationService to re-evaluate
all enabledWhen expressions that use selection (or the default variable).

When you are calling viewer.setSelection(*), are you setting it to an
ISelection containing one of your model objects?

For some things like TreeViewers, they set the selection on the widget
and then get the selection from the widget. That might not be processed
without spinning the display loop:

while (display.readAndDispatch()) ;

PW

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/ganymede/index.jsp?topic=/org.eclips e.platform.doc.isv/guide/workbench.htm

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

Report message to a moderator

Re: Junit testing command execution? [message #334794 is a reply to message #334784]

Fri, 27 February 2009 15:52

Bryan Hunt

Messages: 366
Registered: July 2009

Senior Member

Paul, thanks for the reply. I tryied adding

while (display.readAndDispatch()) ;

and that didn't help. When I execute the command with

handlerService.executeCommand("my.command.id", null);

I see in the debugger the value of "selection" inside WithExpression is
empty so the fundamental problem is that the selection variable is not
being updated.

I'm setting the selection by calling:

view.setSelection(new StructuredSelection(object));

The view is registered with the siet as an ISelectionProvider. The
call to setSelection() on the view delegates to a TableViewer on which
the view is registered as a selection changed listener. In the
debugger, I see view's selectionChanged() function get called before I
execute the command. Here is the view's selectionChanged()

public void selectionChanged(SelectionChangedEvent event)
{
for (ISelectionChangedListener listener : selectionListeners)
listener.selectionChanged(event);

updateStatus();
}

(Aside: I know the TableViewer can be registered as a selection
provider, but there's a technical reason that I can't do that)

When steppiing through the selectionChanged() function above, I see
several listeners get called. Is there a good breakpoint I can set to
see the code that is supposed to update the "selection" variable?

Bryan

Report message to a moderator

Re: Junit testing command execution? [message #334803 is a reply to message #334794]

Fri, 27 February 2009 17:51

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

org.eclipse.ui.internal.services.CurrentSelectionSourceProvi der should
be providing the selection to the IEvaluationService (in 3.4)

PW

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/ganymede/index.jsp?topic=/org.eclips e.platform.doc.isv/guide/workbench.htm

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

Report message to a moderator

Re: Junit testing command execution? [message #334815 is a reply to message #334803]

Sun, 01 March 2009 04:22

Bryan Hunt

Messages: 366
Registered: July 2009

Senior Member

Paul, thanks for the pointer. I was able to debug my problem and my
unit test is now passing.

Bryan

On 2009-02-27 11:51:25 -0600, Paul Webster <pwebster@ca.ibm.com> said:

> org.eclipse.ui.internal.services.CurrentSelectionSourceProvi der should
> be providing the selection to the IEvaluationService (in 3.4)
>
> PW

Report message to a moderator

Previous Topic:	PartInitException at a plugin view
Next Topic:	Custom marker icon ignored in problems view

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Sat Apr 20 05:43:36 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter