Compare With Each Other
Since: 
Last Modified: $Date: 2007/09/05 19:30:00 $
Compare a resource with other resource
The action
	- The action should appear only when there are 2 or 3 resources
	selected.
- If there are 3 resources selected you should be prompted to
	select the common ancestor.
Look
	- Ensure that all titles and labels are ok (e.g. dialog title,
	structure pane title, compare editor labels...).
- Ensure that all buttons in the toolbar are properly enabled
	(e.g. Copy All/Copy Current, Next/Prev Difference/Change).
- Ensure that difference markers are properly display at start
Navigation
	- If you reach the first/last difference you should be prompted
	to go to the end/start of the current element.
- Ensure that you can correctly navigate through differences
	using the difference markers on the right side of the editor.
Merging
	- Ensure that Copy All/Copy Current actions work as expected.
- Ensure that when the Copy All action is used all difference
	markers disappear.
- Ensure that when the Copy Current action is used a proper
	difference marker disappears.
- Ensure you can Undo an action.
Saving
	- If you edit a local resource the dirty state indicator should
	appear over the resource.
- If you edit a local resource and the resource is also opened
	in a different editor the dirty state should appear on that editor too.
- If you edit both of the resources being compare (both are
	local), changes should be saved to both of them.
- If you edit a resource and close the editor you should be
	prompted to save or abandon changes.
- If you edit both of the resources and close the editor you
	should be prompted to select which resources to save using the Save
	Resources dialog.
- Ensure you can Undo a change.
- Ensure that changes are saved correctly to the underlying
	resource.
Concurrent edition
	- Scenario 1
	
		- Compare two local resources using the Compare Editor.
- Open one of them in the default editor (F3) and edit it.
- Ensure that the resource gets the dirty state indicator over
		both editors (i.e default and Compare).
- If you save the resource in the default editor the dirty
		state indicator should go off for both editors.
- Ensure that changes are saved correctly to the underlying
		resource.
 
- Scenario 2a
	
		- Compare two local resources using the Compare Editor.
- Open one of them in the default editor (F3) and edit it.
- Ensure that the resource gets the dirty state indicator over
		both editors (i.e default and Compare).
- If you close the default editor you should be prompted to
		save changes, exiting without saving or cancel.
- Select exit without saving (button named "No").
- Ensure that the resource under the Compare Editor is still in
		the dirty state.
- Ensure that changes are the same as made using the default
		editor.
- Ensure that changes can be saved to the underlying resource
		from the Compare Editor.
- Ensure that changes are saved correctly to the underlying
		resource.
 
- Scenario 2b
	
		- Compare two local resources using the Compare Editor.
- Open one of them in the default editor (F3) and edit it.
- Ensure that the resource gets the dirty state indicator over
		both editors (i.e default and Compare).
- If you close the default editor you should be prompted to
		save changes, exiting without saving or cancel.
- Select to save changes (button named "Yes").
- Ensure that the dirty state indicator for the resource goes
		off.
- Ensure that changes are saved correctly to the underlying
		resource.
- Ensure you can Undo changes.
 
- Scenario 3
	
		- Compare two local resources using the Compare Editor.
- Open both files in default editors (F3) and edit them.
- Ensure that the resource gets the dirty state indicator over
		all editors (i.e two default and Compare).
- Ensure that changes made in one of editors are correctly
		handled by others.
- Ensure that changes are saved correctly to underlying
		resources.
- Ensure you can Undo changes.
 
Common Ancestor
	- Ensure that a resource acting as a common ancestor is the one
	selected in the dialog.
- Ensure you can switch between Two- and Three-way compare when
	a common ancestor is available.
- Ensure you can show/hide the Common Ancestor Pane.