diff --git a/test/JsonVariant_Undefined_Tests.cpp b/test/JsonVariant_Undefined_Tests.cpp
new file mode 100644
index 00000000..2082025e
--- /dev/null
+++ b/test/JsonVariant_Undefined_Tests.cpp
@@ -0,0 +1,75 @@
+// Copyright Benoit Blanchon 2014
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+
+#include <gtest/gtest.h>
+#include <ArduinoJson/JsonArray.hpp>
+#include <ArduinoJson/JsonObject.hpp>
+#include "Printers.hpp"
+
+using namespace ArduinoJson;
+
+class JsonVariant_Undefined_Tests : public ::testing::Test {
+ protected:
+  JsonVariant variant;
+};
+
+TEST_F(JsonVariant_Undefined_Tests, SuccessReturnsFalse) {
+  EXPECT_FALSE(variant.success());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, AsLongReturns0) {
+  EXPECT_EQ(0, variant.as<long>());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, AsStringReturnsNull) {
+  EXPECT_EQ(0, variant.asString());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, AsDoubleReturns0) {
+  EXPECT_EQ(0, variant.as<double>());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, AsBoolReturnsFalse) {
+  EXPECT_FALSE(variant.as<bool>());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, AsArrayReturnInvalid) {
+  EXPECT_EQ(JsonArray::invalid(), variant.asArray());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, AsObjectReturnInvalid) {
+  EXPECT_EQ(JsonObject::invalid(), variant.asObject());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, CanBeSetToLong) {
+  variant = 0L;
+  EXPECT_TRUE(variant.success());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, CanBeSetToDouble) {
+  variant = 0.0;
+  EXPECT_TRUE(variant.success());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, CanBeSetToString) {
+  variant = static_cast<const char*>(NULL);
+  EXPECT_TRUE(variant.success());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, CanBeSetToBool) {
+  variant = false;
+  EXPECT_TRUE(variant.success());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, CanBeSetToArray) {
+  variant = JsonArray::invalid();
+  EXPECT_TRUE(variant.success());
+}
+
+TEST_F(JsonVariant_Undefined_Tests, CanBeSetToObject) {
+  variant = JsonObject::invalid();
+  EXPECT_TRUE(variant.success());
+}