go/src/internal/obscuretestdata/obscuretestdata.go

// Rot13 returns the rot13 encoding or decoding of its input.
func Rot13(data []byte) []byte { … }

// DecodeToTempFile decodes the named file to a temporary location.
// If successful, it returns the path of the decoded file.
// The caller is responsible for ensuring that the temporary file is removed.
func DecodeToTempFile(name string) (path string, err error) { … }

// ReadFile reads the named file and returns its decoded contents.
func ReadFile(name string) ([]byte, error) { … }