kubernetes/staging/src/k8s.io/cli-runtime/pkg/genericiooptions/io_options.go

type IOStreams …

// NewTestIOStreams returns a valid IOStreams and in, out, errout buffers for unit tests
func NewTestIOStreams() (IOStreams, *bytes.Buffer, *bytes.Buffer, *bytes.Buffer) { … }

// NewTestIOStreamsDiscard returns a valid IOStreams that just discards
func NewTestIOStreamsDiscard() IOStreams { … }