Earlier quoted context omitted.
How would you write the tests to see if the RTL text is being displayed properly on the GUI when switching between LTR and RTL layout mode? How would you write the tests to see if the GLSL shader is displaying the mesh on the screen with the correct gamma correction factor?
I lnow you're saying that when it comes to GUIs you have to do it manually, but as someone working on the back-end this begs the question: is there no unit tests framework or anything for GUIs ?
There is no way to properly test UI/UX experiences, even if the test is correct for a button being displayed with the right label, doesn't mean it looks correctly from user experience point of view, yet the test is green.