command

func Emit ¶

func Emit(opts ...any) gloo.Source[[]byte]

Emit returns a Source that emits fixed content. The stdout content is split on newlines and emitted as the output stream; optional stderr content is written to a stderr destination (os.Stderr by default) as a side effect when the source runs. It is handy for seeding and testing pipelines.

Call shapes:

Emit("line1\nline2")                                  // stdout only
Emit("out", EmitStderr("warning"))                    // stdout + stderr
Emit("out", EmitStderr("warning"), EmitStderrTo(&buf)) // capture stderr