Split unit test into several executables

test/JsonBuffer/CMakeLists.txt

@@ -0,0 +1,17 @@
+# 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_executable(JsonBufferTests
+	nested.cpp
+	nestingLimit.cpp
+	parse.cpp
+	parseArray.cpp
+	parseObject.cpp
+)
+
+target_link_libraries(JsonBufferTests gtest)
+add_test(JsonBuffer JsonBufferTests)