test: treat undefined feature variables as 0

[notmuch] / test / T160-json.sh

diff --git a/test/T160-json.sh b/test/T160-json.sh
index 4a797f6aad14dfe13c18c8a69d3eac617dcee80e..f61c3f2dfee4ffaf01333ecd084c7582b9e1aa99 100755 (executable)
--- a/test/T160-json.sh
+++ b/test/T160-json.sh
@@ -66,7 +66,7 @@ test_expect_equal_json "$output" "[{\"thread\": \"XXX\",
  \"unread\"]}]"
 
 test_begin_subtest "Search message: json, 64-bit timestamp"
-if [ $NOTMUCH_HAVE_64BIT_TIME_T -ne 1 ]; then
+if [ "${NOTMUCH_HAVE_64BIT_TIME_T-0}" != "1" ]; then
     test_subtest_known_broken
 fi
 add_message "[subject]=\"json-search-64bit-timestamp-subject\"" "[date]=\"Tue, 01 Jan 2999 12:00:00 -0000\"" "[body]=\"json-search-64bit-timestamp-message\""