On Thu, Jun 30, 2016 at 02:27:19PM -0700, Aaron Rosen wrote:
> This patch exposes the c function expr_parse_string() to be called via
> python. The motivation for this is so that clients interfacing with
> ovn can call this method in order to validate the data they are writting
> to ovn.
> 
> Previously, there were several bugs in the neutron/ovn integration
> that went unnoticed due to the client writing invalid data. This should
> hopefully help catch errors like this earlier as it can now be detected on
> the client side and an error can be raised.

I'm OK with the idea of moving the code to create a symtab for testing
purposes into the OVN library, but I think that it should go into
expr.[ch] since that's what implements expressions, and it should have a
name and comment that makes it clear that it's for testing.

I don't yet understand how to use this, though.  When I run a normal
"make check" I get failures like this:

    #                             -*- compilation -*-
    2132. test-ovn-utils.at:12: testing test-ovn-utils - Python2 ...
    ../../tests/test-ovn-utils.at:12: $PYTHON $srcdir/test-ovn-utils.py
    stderr:
    Traceback (most recent call last):
      File "../../../../tests/test-ovn-utils.py", line 17, in <module>
        from ovs import ovn_utils
    ImportError: cannot import name ovn_utils
    stdout:
    ../../tests/test-ovn-utils.at:12: exit code was 1, expected 0
    2132. test-ovn-utils.at:12: 2132. test-ovn-utils - Python2 
(test-ovn-utils.at:12): FAILED (test-ovn-utils.at:12)

Is some extra step required?

Thanks,

Ben.
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