Changed unit testing framework from Google Test to Catch

third-party/catch/CMakeLists.txt

@@ -0,0 +1,16 @@
+# Copyright Benoit Blanchon 2014-2017
+# MIT License
+# 
+# Arduino JSON library
+# https://bblanchon.github.io/ArduinoJson/
+# If you like this project, please add a star!
+
+add_library(catch
+	catch.hpp
+	catch.cpp
+)
+
+target_include_directories(catch
+	PUBLIC
+	${CMAKE_CURRENT_SOURCE_DIR}
+)

third-party/catch/catch.cpp

@@ -0,0 +1,9 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"