Implement GTest and change windows output path

Implement GTest as a testing infrastructure.
Make windows output binaries to the build folder instead of the release type folder (potentially issue further down the line)
Add a simple unit test for DestroyableComponent

CMakeLists.txt

@@ -76,6 +76,15 @@ endif()
 
 # Our output dir
 set(CMAKE_BINARY_DIR ${PROJECT_BINARY_DIR})
+
+# TODO make this not have to override the build type directories
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO ${CMAKE_BINARY_DIR})
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELWITHDEBINFO ${CMAKE_BINARY_DIR})
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO ${CMAKE_BINARY_DIR})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR})
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR})
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR})
+
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
@@ -239,6 +248,11 @@ set(INCLUDED_DIRECTORIES
 	"thirdparty/recastnavigation"
 	"thirdparty/SQLite"
 	"thirdparty/cpplinq"
+
+	"tests"
+	"tests/dCommonTests"
+	"tests/dGameTests"
+	"tests/dGameTests/dComponentsTests"
 	)
 
 # Add system specfic includes for Apple, Windows and Other Unix OS' (including Linux)
@@ -320,8 +334,6 @@ if (UNIX)
 	endif()
 endif()
 
-add_subdirectory(tests)
-
 # Include all of our binary directories
 add_subdirectory(dWorldServer)
 add_subdirectory(dAuthServer)
@@ -354,3 +366,7 @@ target_precompile_headers(
 	tinyxml2 PRIVATE
 	"$<$<COMPILE_LANGUAGE:CXX>:${PROJECT_SOURCE_DIR}/thirdparty/tinyxml2/tinyxml2.h>"
 )
+
+if (${__enable_testing__} MATCHES "1")
+	add_subdirectory(tests)
+endif()