text: // ArduinoJson - arduinojson.org
  // Copyright Benoit Blanchon 2014-2018
  // MIT License
  
  #include <ArduinoJson.h>
  #include <catch.hpp>
  
  using namespace Catch::Matchers;
  
  TEST_CASE("JsonObject::invalid()") {
    JsonObject& obj = JsonObject::invalid();
  
    SECTION("SubscriptFails") {
      REQUIRE_FALSE(obj["key"].success());
    }
  
    SECTION("AddFails") {
      obj.set("hello", "world");
      REQUIRE(0 == obj.size());
    }
  
    SECTION("CreateNestedArrayFails") {
      REQUIRE_FALSE(obj.createNestedArray("hello").success());
    }
  
    SECTION("CreateNestedObjectFails") {
      REQUIRE_FALSE(obj.createNestedObject("world").success());
    }
  
    SECTION("PrintToWritesBraces") {
      char buffer[32];
      obj.printTo(buffer, sizeof(buffer));
      REQUIRE_THAT(buffer, Equals("{}"));
    }
  }
  