ci(tests): add test framework (#1603)

src/platform/linux/graphics.cpp

@@ -22,7 +22,9 @@ extern "C" {
 #define fourcc_mod_code(vendor, val) ((((uint64_t) vendor) << 56) | ((val) &0x00ffffffffffffffULL))
 #define DRM_FORMAT_MOD_INVALID fourcc_mod_code(0, ((1ULL << 56) - 1))
 
-#define SUNSHINE_SHADERS_DIR SUNSHINE_ASSETS_DIR "/shaders/opengl"
+#if !defined(SUNSHINE_SHADERS_DIR)  // for testing this needs to be defined in cmake as we don't do an install
+  #define SUNSHINE_SHADERS_DIR SUNSHINE_ASSETS_DIR "/shaders/opengl"
+#endif
 
 using namespace std::literals;
 namespace gl {