Hi Larry,

On 02/05/2015 06:57 AM, Larry Martell wrote:
> On Thu, Feb 5, 2015 at 7:29 AM, Jani Tiainen <rede...@gmail.com> wrote:
>> On Tue, 3 Feb 2015 19:38:31 -0500
>> Larry Martell <larry.mart...@gmail.com> wrote:
>>
>>> I have a django app that uses a temp table. In the real world this is
>>> no issue, as each invocation of the app runs in its own MySQL session
>>> so there cannot be any conflict with the temp tables. But in my tests
>>> there are multiple requests sent, and apparently they are all in the
>>> same session, as on the second request I get an error because the temp
>>> table already exists. I tried logging out between requests, and I
>>> tried creating a new Client instance for each request, but I still got
>>> the error. Then I tried deleting the Client object, but I got Client
>>> object has no attribute __del__.
>>>
>>> What I can do so that each request in a test has its own MySQL session?
>>
>>
>> Instead of Django standard TestCase (which internally wraps all in single 
>> transaction and makes transactions as a no-op), you should use 
>> TransactionalTestCase.
>>
>> https://docs.djangoproject.com/en/1.7/topics/testing/tools/#transactiontestcase
> 
> Thanks for the reply Jani. We're using 1.5 and I don't think this is
> available in that version. We'll probably be moving to 1.6 soon
> though, and it is there.

TransactionTestCase has been around for quite a long time (since 1.1,
IIRC). It's definitely in 1.5.

> But I'm not sure how this will be useful to
> me. The docs say "A TransactionTestCase resets the database after the
> test runs by truncating all tables."  My test code is something like
> this:
> 
>         # load test data
>         # login
>         response = self.client.get('...')
>         self.assertEqual(response.status_code, 200)
>         # collect results
> 
>         response = self.client.get('...')
>         self.assertEqual(response.status_code, 200)
>         # collect results
> 
> and so on. I need the temp table to get dropped between each get call.
> The best way to do this is if each is in its own MySQL session. Having
> the table truncated doesn't really accomplish this. I think I will
> have to modify the code to drop the temp table after it's used. I hate
> to muck with working production code to accommodate a test, but I also
> don't want the test branch to have a different code base from the
> production branch. I'll probably go with the former option.

I agree, I don't think TransactionTestCase will help with this situation.

I find the production design a bit questionable, but taking it as a
given that it meets your needs adequately and you don't want to change
it, you could also address this problem by simply dropping the temp
table in a tearDown() method, no?

Carl

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