[RFC] readonly branch and repository tests
robertc at robertcollins.net
Fri Jun 22 03:35:28 BST 2007
We have several scenarios where we want to make sure bzr can do readonly
operations on branches and repositories, but not read-write ones.
- Bundle 5 is likely to be a branch-as-a-bundle (or at least I think
its well worth trying for) - this is a readonly repository and branch
implementation, so mutating tests are pointless.
- bzr-hg, bzr-git, bzr-cvs if it is created - none of these should be
required to write to the backend losslessly, and being able to just
'pull' with confidence would be a great win. And we cannot represent in
these other systems all the things that we do - forcing a real-time
export (which is what write support to a foreign format is) - as the
price to be able to test these things is basically ugly.
So I'm thinking about how to structure our per-implementation tests to
cater for this.
I'm thinking that there are three basic steps:
- tag readonly implementations somehow - starting with Branch4
- split out the tests of mutating interfaces somehow.
* Possibly decorate them
* possibly split the directories to keep our simple approach
* possibly a different list in the per-FOO/__init__.py.
- change the readonly tests to call a method on self after setting up
the scenario, which will transform the branch/repository into the real
format needed, and then the test can proceed. I see this working much
like the InterTree adaption function works - which has been quite
successful I thought in letting us test things that interact with
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