Zero the visited flag after encoding an empty array or object

Encoding an empty array or object worked, but encoding it again
(possibly after adding some items) failed, because the visited flag
(used for detecting circular references) wasn't zeroed.

1 files changed, 46 insertions, 0 deletions

diff --git a/test/suites/api/test_dump.c b/test/suites/api/test_dump.c
new file mode 100644
index 0000000..c471159
--- /dev/null
+++ b/test/suites/api/test_dump.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2009, 2010 Petri Lehtinen <petri@digip.org>
+ *
+ * Jansson is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ */
+
+#include <jansson.h>
+#include <string.h>
+#include "util.h"
+
+int main()
+{
+    json_t *json;
+    char *result;
+
+    /* Encode an empty object/array, add an item, encode again */
+
+    json = json_object();
+    result = json_dumps(json, 0);
+    if(!result || strcmp(result, "{}"))
+      fail("json_dumps failed");
+
+    json_object_set_new(json, "foo", json_integer(5));
+    result = json_dumps(json, 0);
+    if(!result || strcmp(result, "{\"foo\": 5}"))
+      fail("json_dumps failed");
+
+    json_decref(json);
+
+    json = json_array();
+    result = json_dumps(json, 0);
+    if(!result || strcmp(result, "[]"))
+      fail("json_dumps failed");
+    free(result);
+
+    json_array_append_new(json, json_integer(5));
+    result = json_dumps(json, 0);
+    if(!result || strcmp(result, "[5]"))
+      fail("json_dumps failed");
+    free(result);
+
+    json_decref(json);
+
+    return 0;
+}