Re: OCUnit
Re: OCUnit
- Subject: Re: OCUnit
- From: Ben Dougall <email@hidden>
- Date: Thu, 21 Aug 2003 20:59:00 +0100
On Thursday, August 21, 2003, at 08:32 pm, Thomas Davie wrote:
On Thursday, August 21, 2003, at 08:20 pm, Ben Dougall wrote:
On Thursday, August 21, 2003, at 12:36 pm, Thomas Davie wrote:
Hi,
I was wondering if anyone here had any experience of getting
OCUnit working with Cocoa. I am trying to test an NSMutableArray
subclass with it, but am getting some strange errors. The error I
have at the moment is:
-[TestTaskList testAddAndRetrieveTask] : *** -addObject: only
defined for abstract class. Define -[TaskList addObject:]!
I do not call addObject directly in the test, instead I call
-(void)addTask:(Task *)newTask, which in turn calls -(void)addObject
(along with a couple of other things). Does anyone know where the
above error is coming from? It seems extremely odd, seing as
NSMutableArray is not an abstract class.
i don't have a solution but i can say that an NSMutableArray is an
abstract class, more specifically it's part of a class cluster that
makes up NSMutableArray and NSArray. they're both abstract classes.
Could you explain a little farther, my understanding was that if you
could instantiate a class then it wasn't an abstract class - As far as
I understood an abstract class contained an interface on which to base
a group of subclasses, but not the code to make the class it's self
useful.
i don't know the absolute details but NSMutableArray is an abstract
class to a class cluster. that means that when you use an
NSMutableArray you're not actually using the NSMutableArray class
itself, even though it looks like you are. you're indirectly via
NSMutableArray using a sub class of NSMutableArray and which subclass,
and what subclasses there actually are beneath NSMutableArray are
invisable to you, so NSMutableArray acts like a front for multiple
versions of NSMutableArray.
probably best to read the class cluster page on apple's document site:
<
http://developer.apple.com/documentation/Cocoa/Conceptual/Foundation/
Concepts/ClassClusters.html>
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| | >Re: OCUnit (From: Thomas Davie <email@hidden>) |