test: Fix the search and dump-restore tests to operator on non-empty mail store.

We do this with a new add_email_corpus function that establishes a
mail store with 50 messages from the notmuch mailing list.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/notmuch-test b/test/notmuch-test
index fc1a66b..13c5d80 100755
--- a/test/notmuch-test
+++ b/test/notmuch-test
@@ -22,4 +22,4 @@ done
 ./aggregate-results.sh test-results/*
 
 # Clean up
-rm -r test-results
+rm -r test-results corpus.mail