Golden file testing for Go (library)

 Goldie is a golden file test utility for Go projects. It's typically
 used for testing responses with larger data bodies.
 .
 The concept is straight forward. Valid response data is stored in a
 "golden file". The actual response data will be byte compared with the
 golden file and the test will fail if there is a difference.
 .
 Updating the golden file can be done by running go test -update ./....