Now that notmuch_database_find_message_by_filename works on read-only
databases, remove the workaround that disabled it on read-write
databases.
This also adds a regression test for find_message_by_filename.
As reported in
id:"CAEbOPGyuHnz4BPtDutnTPUHcP3eYcRCRkXhYoJR43RUMw671+g@mail.gmail.com"
sometimes gmime tries to access a NULL pointer, e.g. g_mime_iconv_open()
tries to access iconv_cache that is NULL if g_mime_init() is not called.
This causes notmuch to segfault when calling gmime functions.
Calling g_mime_init() initializes iconv_cache and others variables needed
by gmime, making sure they are initialized when notmuch calls gmime
functions.
Test marked fix by db.
One is quoted printable, the other users 8 bit encoding. The latter
triggers a bug in the python bindings due to missing call to
g_mime_init. The corresponding test is marked broken in this commit.
The new test_python() function makes writing Python tests a little easier:
- it sets the environment variables as needed
- it redirects stdout to the OUTPUT file (like test_emacs()).
This commit also declares python as an external prereq.
The stdout redirection is required to avoid trouble when running commands like
"python 'script' | sort > OUTPUT": in such a case, any error due to a missing
external prereq would be "swallowed" by sort, resulting to a failed test instead
of a skipped one.
We start modestly, with a (slightly modified) test case from Kazuo
Teramoto. Originally it just made sure the bindings didn't crash; here
we check that by comparing the output with that of notmuch search.
