[Product-Developers] Functional testing with plone.app.testing and isolation

[Rafael Oliveira]

On Sat, Jul 16, 2011 at 10:13 AM, Martin Aspeli
<optilude+lists at gmail.com> wrote:
> On 14 July 2011 14:06, Rafael Oliveira <rafaelbco at gmail.com> wrote:
>> Hi,
>>
>> I'm using plone.app.testing to do some functional testing using
>> zope.testbrowser. According to the PyPI documentation of p.a.testing I
>> have to call transaction.commit() whenever I add content to the Plone
>> Site and want to inspect it in the testbrowser. However, when I do
>> this it seems the changes I make to ZODB are not cleaned up when the
>> test layer is thorn down.
>>
>> Example: I create a content item in a test and call
>> transaction.commit(). In another test, of another package, belonging
>> to a different layer, I can retrieve the same content item. All layers
>> and tests are wrote in the standard way prescribed in p.a.testing
>> documentation on PyPI.
>>
>> Is this the expected behavior or am I doing something wrong ? Do I
>> have to manualy undo every change to ZODB if I use
>> transaction.commit() ?
>
> You shouldn't have to.
>
>> Code: http://dev.plone.org/collective/browser/collective.cmfeditionsdexteritycompat/trunk/collective/cmfeditionsdexteritycompat
>
> I wonder if this may be a sequencing issue: Instead of doing
> transaction.commit() in setUp(), try to do it in the test_* method
> before the call to browser.open().
>
> It's also useful to look at the test runner output to see which order
> it's setting up the layers in. The FunctionalTesting() layer basically
> stacks a DemoStorage for each and every test (in its testSetUp()
> method) and pops it in testTearDown(), which is how we get isolation.
> If your own setUp() or any other transaction commit is running before
> the stacking, you'll be committing to the underlying DemoStorage,
> which would then be shared between tests.
>

I see. I did the changes and it worked. Thanks !

Rafael Bruno Cavalhero de Oliveira
Analista de Desenvolvimento de Sistemas - SERPRO
http://rafaelb.objectis.net