test: Add test for messages with missing headers

Currently the JSON tests for search and show are broken because
notmuch attempts to dereference a NULL pointer.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/notmuch-test b/test/notmuch-test
index ea39dfc7..cc732c3c 100755
--- a/test/notmuch-test
+++ b/test/notmuch-test
@@ -59,6 +59,7 @@ TESTS="
   emacs-address-cleaning
   emacs-hello
   emacs-show
+  missing-headers
 "
 TESTS=${NOTMUCH_TESTS:=$TESTS}