On Tue, Aug 31, 2010 at 9:01 PM, Panu Suominen
<[email protected]>wrote:
> Hi all,
>
> I am quite new to smalltalk and I am probably having "cultural"
> difficulties. I mostly work with Java.
> So it is possible that there is trivial answer for my question or my
> question is just wrong. But here
> it goes.
>
> I am implementing object that should make a call to some other object.
> I need to test that the
> caller works correctly based on the return value it receives. So
> basically the code and the test
> looks like this and I need to fill the XXXX part:
>
> Object>>doSomething
> result:=innerObject makeACall.
> "based on result do something"
>
> Test>>test
> "get bogus object for testing from somewhere"
> mockForTest := XXXX.
> (Object new)
> innerObject: mockForTest.
> doSomething.
> "check that something was done."
>
>
Something hacky can be do something like this:
Test>>test
"get bogus object for testing from somewhere"
SystemChangeNotifier uniqueInstance doSilently: [
mockClass := Object
subclass: #MockForTest
instanceVariableNames: ''
classVariableNames: ''
poolDictionaries: ''
category: self class category.
MockForTest compile: 'makeACall
^ ''holaaaa'' '
].
mockForTest := MockForTest new.
(Object new)
innerObject: mockForTest.
doSomething.
"check that something was done."
I didn't check with an email, but it should work. You can also add
#makeACAll in an already existing class. Suppose I do it in TestCase:
TestCase compile: 'makeACall
^ ''holaaaa'' '
mockForTest := TestCase new.
(Object new)
....
Of course, a real project for mocking would be muuuch better.
> I am used to resolve this kind of problems using mock objects. I
> tought it would be easy to implement
> in smalltalk too because it is dynamic language. However with my limited
> searches I did not found much usable code or examples how to do it.
> So, my question is: is there some easy way to resolve this problem or
> does it require
> a bigger library? If it does, is there a library already for that?
>
> --
> Panu
>
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