add arduino json lib

#182

lib/ArduinoJson/test/JsonVariant/undefined.cpp

@@ -0,0 +1,54 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonVariant undefined") {
+  JsonVariant variant;
+
+  SECTION("AsLongReturns0") {
+    REQUIRE(0 == variant.as<long>());
+  }
+
+  SECTION("AsUnsignedReturns0") {
+    REQUIRE(0 == variant.as<unsigned>());
+  }
+
+  SECTION("AsStringReturnsNull") {
+    REQUIRE(0 == variant.as<char*>());
+  }
+
+  SECTION("AsDoubleReturns0") {
+    REQUIRE(0 == variant.as<double>());
+  }
+
+  SECTION("AsBoolReturnsFalse") {
+    REQUIRE(false == variant.as<bool>());
+  }
+
+  SECTION("AsArrayReturnInvalid") {
+    REQUIRE(JsonArray::invalid() == variant.as<JsonArray&>());
+  }
+
+  SECTION("AsConstArrayReturnInvalid") {
+    REQUIRE(JsonArray::invalid() == variant.as<const JsonArray&>());
+  }
+
+  SECTION("AsObjectReturnInvalid") {
+    REQUIRE(JsonObject::invalid() == variant.as<JsonObject&>());
+  }
+
+  SECTION("AsConstObjectReturnInvalid") {
+    REQUIRE(JsonObject::invalid() == variant.as<const JsonObject&>());
+  }
+
+  SECTION("AsArrayWrapperReturnInvalid") {
+    REQUIRE(JsonArray::invalid() == variant.as<JsonArray>());
+  }
+
+  SECTION("AsObjectWrapperReturnInvalid") {
+    REQUIRE(JsonObject::invalid() == variant.as<JsonObject>());
+  }
+}