chore: added mock methods for both SetErrWriter and SetWriter (#451)

* chore: added missing SetErrWriter mock method

* chore: added comments to not use SetErrWriter and SetWriter in  test

Author: Aerex

testhelpers/terminal/test_ui.go

@@ -27,6 +27,9 @@ type FakeUI struct {
 	PasswordPrompts []string
 	ChoicesPrompts  []choicesPrompt
 	WarnOutputs     []string
+	stdoutWriter    io.Writer
+	stdErrWriter    io.Writer
+	stdInWriter     io.Reader
 
 	inputs bytes.Buffer
 	stdOut bytes.Buffer
@@ -225,6 +228,18 @@ func (ui *FakeUI) ErrWriter() io.Writer {
 	return &ui.stdErr
 }
 
+// NOTE: SetErrWriter is added here since the method is part of the UI type Interface interface
+// the method is not needed for testing
+func (ui *FakeUI) SetErrWriter(buf io.Writer) {
+	panic("unimplemented")
+}
+
+// NOTE: SetErrWriter is added here since the method is part of the UI type Interface interface
+// the method is not needed for testing
+func (ui *FakeUI) SetWriter(buf io.Writer) {
+	panic("unimplemented")
+}
+
 func (ui *FakeUI) SetQuiet(quiet bool) {
 	ui.quiet = quiet
 }