Convert golden tests to tasty-golden

[pepeiborra]

I think using utilities from tasty-golden is better in terms of golden file management (it allows us to update golden file automatically).

Originally posted by @Ailrun in #191

[jneira]

It seems 67744c4 changed eval plugin tests to make it use golden files, ¿do more tests need be changed to use tasty-golden?

[jneira]

It seems all golden tests are using tasty-golden so we could close this. Feel free to reopen the issue it is not the case (with pointers to concrete tests if possible)