-test_expect_code 1 "No tag operations" 'notmuch tag One'
-test_expect_code 1 "No query" 'notmuch tag +tag2'
+test_begin_subtest "No tag operations"
+test_expect_code 1 'notmuch tag One'
+
+test_begin_subtest "No query"
+test_expect_code 1 'notmuch tag +tag2'