feat(CMake): Add GoogleTest as dependencies

Reference: https://google.github.io/googletest/quickstart-cmake.html

Author: htbkoo

CMakeLists.txt

@@ -4,4 +4,21 @@ project(cplusplus)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+###
+# START - For setting up Google Test
+# Reference: https://google.github.io/googletest/quickstart-cmake.html#set-up-a-project
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FetchContent)
+FetchContent_Declare(
+        googletest
+        URL https://github.com/google/googletest/archive/03597a01ee50ed33e9dfd640b249b4be3799d395.zip
+)
+# For Windows: Prevent overriding the parent project's compiler/linker settings
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
+
+# END  - For setting up Google Test
+###
+
 add_executable(cplusplus main.cpp)