unicode: add tests for g_utf8_normalize() and empty strings
These are extracted verbatim from !1571 (closed) so that we can merge them now instead of them hanging around unused for any longer.
See: !1571 (closed)
These are extracted verbatim from !1571 (closed) so that we can merge them now instead of them hanging around unused for any longer.
See: !1571 (closed)