add arduino json lib

#182

lib/ArduinoJson/test/JsonObject/basics.cpp

@@ -0,0 +1,19 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonObject basics") {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+
+  SECTION("InitialSizeIsZero") {
+    REQUIRE(0 == _object.size());
+  }
+
+  SECTION("SuccessIsTrue") {
+    REQUIRE(_object.success());
+  }
+}