smoke.tst: Fix not to hang on macOS
commita558d41eaf0426cab7a3744668d11ca3cc5f7ef7
authorOlly Betts <olly@survex.com>
Wed, 21 Mar 2018 23:32:11 +0000 (22 12:32 +1300)
committerOlly Betts <olly@survex.com>
Wed, 21 Mar 2018 23:34:47 +0000 (22 12:34 +1300)
treee307058686b6d419d22c1c491cdd61c0b5c0c422
parent949a45989113eee9287f1612ea2fa0351682b251
smoke.tst: Fix not to hang on macOS

Pass --help to aven when we run it to check that an unknown language
doesn't cause a segfault, and check for exit code 0.  Previously we
ran it with no options and with DISPLAY unset - under X that caused
it to exit with code 255, but on other platforms it would start
aven and then wait until a human closed it.
tests/smoke.tst