1 files changed, 30 insertions, 0 deletions
diff --git a/contrib/libcbor/test/tag_encoders_test.c b/contrib/libcbor/test/tag_encoders_test.c
new file mode 100644
index 000000000000..5962dd9d8938
--- /dev/null
+++ b/contrib/libcbor/test/tag_encoders_test.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2014-2020 Pavel Kalvoda <me@pavelkalvoda.com>
+ *
+ * libcbor is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ */
+
+#include "assertions.h"
+#include "cbor.h"
+
+unsigned char buffer[512];
+
+static void test_embedded_tag(void **_CBOR_UNUSED(_state)) {
+  assert_size_equal(1, cbor_encode_tag(1, buffer, 512));
+  assert_memory_equal(buffer, ((unsigned char[]){0xC1}), 1);
+}
+
+static void test_tag(void **_CBOR_UNUSED(_state)) {
+  assert_size_equal(5, cbor_encode_tag(1000000, buffer, 512));
+  assert_memory_equal(buffer, ((unsigned char[]){0xDA, 0x00, 0x0F, 0x42, 0x40}),
+                      5);
+}
+
+int main(void) {
+  const struct CMUnitTest tests[] = {
+      cmocka_unit_test(test_embedded_tag),
+      cmocka_unit_test(test_tag),
+  };
+  return cmocka_run_group_tests(tests, NULL, NULL);
+}