• g_argc : rtest.cpp
• g_argv : rtest.cpp
• g_valid_bmp_file : test_constants.h , test_constants.cpp
• g_valid_image_content : test_constants.cpp , test_constants.h
• g_valid_image_height : test_constants.h , test_constants.cpp
• g_valid_image_res : test_constants.cpp , test_constants.h
• g_valid_image_width : test_constants.cpp , test_constants.h
• g_valid_png_file : test_constants.h , test_constants.cpp