[PATCH v4 0/1] MR320: riched20/tests: Test for ITextDocument::Undo and ITextDocument::Redo (#53289).

[Jinoh Kang (@iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/riched20/tests/richole.c:
> +      }
> +      if (SUCCEEDED(hr) && inst->undo_ctl_state == undoStateDisabled)
> +      {
> +        inst->undo_ctl_state = undoStateActive;
> +        inst->last_undo_status = TRUE;
> +      }
> +      break;
> +    case undoActionDisable:
> +      hr = ITextDocument_Undo(inst->doc, tomFalse, count);
> +      todo_wine
> +      ok(hr == S_OK, "Undo: %#lx\n", hr);
> +      if (SUCCEEDED(hr))
> +      {
> +        inst->undo_ctl_state = undoStateDisabled;
> +        inst->last_undo_status = FALSE;
> +        inst->last_redo_status = FALSE;
This models the complex behaviour of riched20's undo/redo status return.
Note that removing any of both statements or flipping any boolean value makes the test fail.

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/320#note_3239