use local library source instead to correct some black-box issue for aliyuniot

lib/ArduinoJson/extras/tests/JsonArray/get.cpp

@@ -0,0 +1,16 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonArray::get()") {
+  DynamicJsonDocument doc(4096);
+  deserializeJson(doc, "[1,2,3]");
+  JsonArray array = doc.as<JsonArray>();
+
+  SECTION("Overflow") {
+    REQUIRE(array.getElement(3).isNull());
+  }
+}