Am 12.07.2013 um 00:17 schrieb Camillo Bruni <camillobr...@gmail.com>:

> 
> On 2013-07-11, at 11:50, Norbert Hartl <norb...@hartl.name> wrote:
> 
>> I'm playing with Phexampe because I think that in my current project the 
>> setup of test scenarios will be a huge part of the testing. So do it in a 
>> structured way reducing doubled initialization procedures should be 
>> something good.
>> I'm just wondering how the state is kept between dependent test cases. A 
>> Phexample test case returns a value so that
>> 
>> value := self given: #shouldHaveCollectedSomeState
>> 
>> transfers the state from the dependent test case into the current. What do 
>> you do if the state produced is more complex than a single value? 
> 
> I don't remember, but calling multiple times #given:, for each part, doesn't 
> solve this problem?

No, in my case a test needs two participants that communicate with each other. 
The first test case checks the validity of the request. The second test case 
checks the validity of the reply. So I need to transfer both communication ends 
to the next test case. For now I've created a TestScenario class that keeps 
both parts just so I can return it as a single value. That is not optimal 
because the number of combinations of objects I need to return together will be 
quite big and creating a class for each of them is not good. Using 
TestResources is not optimal either because I need to manually reset them which 
defeats their purpose. Or I need to have an external class that records the 
side effects.
> 
>> To be honest I don't understand why in a test case that calls #given: a 
>> tearDown/setUp cycle is executed between the first and the second test case. 
>> I think while using #given: I make the second test case explicitly dependent 
>> on the first. Why should I reset state collected by the first before 
>> executing the second?
> 
> I think that is one of the possible approximations. Since in general you 
> cannot say that a testcase is side-effect free (needs teardown) or has some 
> requirements (setup).
> 
I think side-effect freeness is not the point here. SetUp and tearDown are 
useful to isolate a single test case. When using #given: you include one test 
case into another. Meaning the setUp and tearDown needs to surround the 
combination of both and not each individual. Removing side-effects between the 
tests is like calling cleanUpInstanceVariables in the middle of a test case.
 
> On the other hand I would rather expect it not to call the setup, especially 
> in the case where the #given is done on the same class/test suite.
> 
> I only had a look at phexample a while ago, so I don't remember all the 
> details. I think I will do a try this weekend.


Thanks Cami!

Norbert


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