[rspec-users] mock expectation in before block

Andrea Fazzi andrea.fazzi at alca.le.it
Tue Apr 29 09:34:04 EDT 2008


Matt Berther ha scritto:
> Hi Andrea,
>
> I generally put stub! calls in the before block and then have the mock 
> expectation in the example block.
>
> -- 
> Matt Berther
> http://www.mattberther.com
>
>
>
>
> On Apr 29, 2008, at 5:59 AM, Andrea Fazzi wrote:
>
>> Hi all,
>>
>> consider a class Foo that send, in its constructor, some message to 
>> an object of class Bar:
>>
>> class Foo
>> def initialize(bar)
>>   @bar = bar
>>   @bar.some_message
>> end
>>
>> ...
>>
>> end
>>
>> Now, in order to test Foo, I'd like to decouple it from Bar mocking 
>> bar object, so:
>>
>> describe Foo do
>>
>> before do
>>   @bar = mock('bar')
>>   @bar.should_receive(:some_message)
>>   @foo = Foo.new(bar)
>> end
>>
>> it 'should ...'
>> it 'should ...'
>>
>> ...
>>
>> end
>>
>> The question is: is it appropriate to put a mock expectation inside a 
>> before block? Or mock expectations are relegated to example blocks?
>>
>> Thanks in advance.
>> Andrea
>>
>>
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>
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Thank you for your answer Matt. I think I've cought the point.

Stub methods return canned responses so they are not intended to 
underline interactions between the mock object and the object under testing.

Thank you again.
Andrea



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