+# Ensure NOTMUCH_SRCDIR and NOTMUCH_BUILDDIR are set.
+. $(dirname "$0")/export-dirs.sh || exit 1
+
+# It appears that people try to run tests without building...
+if [[ ! -x "$NOTMUCH_BUILDDIR/notmuch" ]]; then
+ echo >&2 'You do not seem to have built notmuch yet.'
+ exit 1
+fi
+