diff --git a/test/T564-lib-query.sh b/test/T564-lib-query.sh
new file mode 100755
index 00000000..103870a6
--- /dev/null
+++ b/test/T564-lib-query.sh
@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+test_description="notmuch_database_* API"
+
+. $(dirname "$0")/test-lib.sh || exit 1
+
+add_email_corpus
+
+test_begin_subtest "building database"
+test_expect_success "NOTMUCH_NEW"
+
+cat <<EOF > c_head
+#include <stdio.h>
+#include <notmuch.h>
+#include <notmuch-test.h>
+#include <talloc.h>
+int main (int argc, char** argv)
+{
+   notmuch_database_t *db;
+   notmuch_status_t stat;
+   char *msg = NULL;
+
+   stat = notmuch_database_open_verbose (argv[1], NOTMUCH_DATABASE_MODE_READ_WRITE, &db, &msg);
+   if (stat != NOTMUCH_STATUS_SUCCESS) {
+     fprintf (stderr, "error opening database: %d %s\n", stat, msg ? msg : "");
+     exit (1);
+   }
+EOF
+
+cat <<'EOF' > c_tail
+   if (stat) {
+       const char *stat_str = notmuch_database_status_string (db);
+       if (stat_str)
+           fputs (stat_str, stderr);
+    }
+
+}
+EOF
+
+test_begin_subtest "roundtrip query string with closed db"
+cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR}
+    {
+        notmuch_query_t *query;
+        const char *str = "id:1258471718-6781-1-git-send-email-dottedmag@dottedmag.net";
+        const char *ret;
+
+        EXPECT0(notmuch_database_close (db));
+        query = notmuch_query_create (db, str);
+        ret = notmuch_query_get_query_string (query);
+
+        printf("%s\n%s\n", str, ret);
+    }
+EOF
+cat <<EOF > EXPECTED
+== stdout ==
+id:1258471718-6781-1-git-send-email-dottedmag@dottedmag.net
+id:1258471718-6781-1-git-send-email-dottedmag@dottedmag.net
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_done