plone.namedfile deletes read-mode open files.

Hi,

I just found a strange/surprising behavior in plone.namedfile

Background: I had unicode problems in plone.app.contenttypes indexers. 
This is completly unrelated, but while debugging here I refined the 
tests to cover all three api cases for file field input: string, unicode 
and open file.

Latter worked fine, except that the open file disappeared from 
filesystem, so running the test a second time failed.

Now I had no idea what happens and added a failing test documenting the 
behavior.

https://github.com/plone/plone.app.contenttypes/commit/2f758c15298f0f012e2f568accaad7f64060e5cb#L2R206

I also filed a bug at:

https://github.com/plone/plone.app.contenttypes/issues/57

Fact is: Using plone.namedfile api to create a NamedBlobFile with 'data' 
kwarg set to an open (read-mode) file will remove the file from filesystem.

So this is not an plone.app.contenttypes issue.

I consider it as black magic: If some api kills files I pass over as 
read mode open files the api is a bad citizen.

How can we handle this?

regards Jens
-- 
Klein & Partner KG, member of BlueDynamics Alliance


------------------------------------------------------------------------------
Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more!
Discover the easy way to master current and previous Microsoft technologies
and advance your career. Get an incredible 1,500+ hours of step-by-step
tutorial videos with LearnDevNow. Subscribe today and save!
http://pubads.g.doubleclick.net/gampad/clk?id=58040911&iu=/4140/ostg.clktrk