The value of having the GIF directly in the tests seems not that big to me, since i expect most people to not be able to "convert" those bytes to an image in their head (at least I cannot do it) :wink: 

Therefore I'd move the gif to an `ftw/file/tests/assets` folder and just open it here.

In general I like to have every important information in the test and move everything not important outside of the test.