[Zope3-dev] testrunner layers

[Florent Guillaume]

I didn't find the info I was looking for in the unit tests and docs  
for the testrunner:

How are layers defined? Are they just a class with a setUp and  
tearDown classmethod?
Is it enough to provide a layer attribute in the layer class? Is  
there a use of a 'base' attribute or is it just the unit tests for  
the testrunners that have it (they are full of "# Internal to  
samples. Not part of layer API" so it's hard to know).

How does a test class reference a layer? Just by setting the layer  
attribute to the dotted name of the class? Or to the class itself?

Along what algorithm does the --layer directive match layers? Is it  
an exact match, or a substring? A prefix? How does the base come into  
play?

Also, what's the intent behind no-tearDown layers?

Thanks,

Florent

-- 
Florent Guillaume, Nuxeo (Paris, France)   Director of R&D
+33 1 40 33 71 59   http://nuxeo.com   fg at nuxeo.com