Split unit test into several executables

test/Polyfills/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_executable(PolyfillsTests 
+	isFloat.cpp
+	isInteger.cpp
+	parseFloat.cpp
+	parseInteger.cpp
+)
+
+target_link_libraries(PolyfillsTests gtest)
+add_test(Polyfills PolyfillsTests)