in internal/testutil/golden.go [102:107]
func golden(t *testing.T, opts *options) (string, error) {
if opts.Extension == "" {
opts.Extension = ".yaml"
}
return filepath.Abs(filepath.Join("../../testdata", opts.SubDir, sanitizeFilename(opts.Prefix+t.Name()+opts.Suffix)) + opts.Extension)
}