Allow test of overwriting translations of plone domain

[idgserpro]

If I create a product that overrides translations of domain plone following this documentation, I can't test the translations overwritten.

This is because the plone.app.testing always loads the zcml of the Products.CMFPlone (which in turn loads the zcml of the plone.app.locales) before of zcml of my product.

[idgserpro]

@mauritsvanrees you can help here?

[mauritsvanrees]

I guess you could use a different layer for this. Do not use the plone.app.testing layers, but use a lower level one from plone.testing, for example the Zope 2 layer:
https://pypi.python.org/pypi/plone.testing#zope-2
In your layer setup load your own zcml first and maybe then the Products.CMFPlone or the plone.app.locales zcml and then it should work.
Note: I have not tried this.

[idgserpro]

@mauritsvanrees I even tried it. But I had to load all zcmls that my package required, one by one. That doesn't seem right.

[mauritsvanrees]

Loading your own configure.zcml should be enough to load all the zcmls of your package.

Is 'all zcmls' such a long list then? Maybe including dependency packages?

Maybe the list gets too long because you try to test too much. I can imagine that it is tricky to set this up correctly so you can test what a template returns. You could load the zcml that has your i18n:registerTranslations directive and load the configure.zcml from plone.app.locales, and then simply call something like this to get a direct translation:

translate('the msgid you want to test', domain='plone',
          target_language='your favourite language code')

See https://github.com/mauritsvanrees/maurits.i18ntalk/blob/master/talk.rst#explicit-translations