git-svn: fix 'info' tests for unknown items
The previous tests all expected the results from SVN and Git to be
identical, and expected both to return success. This cannot be
guaranteed: SVN changed the message style between 1.4 and 1.5, and
in 1.5, sets a failure exit code.
Change the tests to verify that 'git svn info <item>' sets a failure
exit code, and that its output contains the file name. This should
hopefully catch all other errors.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Acked-by: Eric Wong <normalperson@yhbt.net>