Function execute

internal/cli/cli_test.go:18–29

execute runs the App once with the given args and returns the captured streams + exit code. Tests share this helper so changes to App.Run flow only need to be applied in one place.

(t *testing.T, args ...string)

// streams + exit code.  Tests share this helper so changes to App.Run flow
// only need to be applied in one place.
func execute(t *testing.T, args ...string) (stdout string, stderr string, code int) {
	t.Helper()
	var out, err bytes.Buffer
	app := cli.New(cli.Options{
		Version: "test-version",
		Stdout:  &out,
		Stderr:  &err,
		Stdin:   &bytes.Buffer{},
	})
	code = app.Run(args)
	return out.String(), err.String(), code
}

// writeTempFile creates a file inside a t.TempDir with the given content and
// returns its absolute path.  Used by `add`-style command tests that need a