Bug 74339

Summary:	[JUnit] Provide "drill-down" on assertEquals failures for Collection
Product:	[Eclipse Project] JDT	Reporter:	David Corbin <dcorbin>
Component:	UI	Assignee:	JDT-UI-Inbox <jdt-ui-inbox>
Status:	ASSIGNED ---	QA Contact:
Severity:	enhancement
Priority:	P3	CC:	andrej
Version:	3.2
Target Milestone:	---
Hardware:	All
OS:	All
Whiteboard:

Description David Corbin

2004-09-20 14:30:40 EDT

When an assertEquals for two strings fails, there's a nice little drill down
that pops up a "diff dialog".  This would be great for Collections.

Making this an extension point would also be a good idea.

Comment 1 Erich Gamma

2004-09-21 09:32:40 EDT

One trick to get the diff dialog for collections is to externalize them into a 
string.

Comment 2 David Corbin

2004-09-21 11:49:37 EDT

True, but I'm sure you agree that ideally the IDE should change, not the 'code
under development'.

Comment 3 Erich Gamma

2004-09-21 11:58:23 EDT

sure, the issue is that the JUnit's asserts don't know about collections, so 
making progress on this one depends on JUnit

Comment 4 David Corbin

2004-09-22 16:07:37 EDT

Well, I haven't looked at how the String behavior works, but even if JUnit
changes are required, I'm sure you could get them committed and released. :)

Comment 5 Erich Gamma

2006-05-24 05:48:32 EDT

Moving back to the JDT/UI inbox

Comment 6 David Corbin

2006-06-23 16:44:24 EDT

I'd even suggest extending this if possible, to work for ANY Objects. It would be nice to be able to view the objects as side by side trees (like they show in the debuger local variables view).

Comment 7 Andrej Zachar

2014-02-27 17:41:11 EST

Hello All, 
I have implemented an initial set of features, that are capable to compare complex objects visually regardless used technology.

Because the implementation can span far behind Eclipse borders, I created a proposal, that tells about major issues and how to address them.

The architectural proposal for the complete solution can be found at
http://blog.chocolatejar.eu/contribution/2014/02/27/better-visualization-junit-failures/

The implementation home page can be found at  http://blog.chocolatejar.eu/org.eclipse.jdt.ui/ 

Please let me know what do you think about it and what should I do in order to integrated it into Eclipse.


Best regards,
Andrej