gtestutils: Forbid test paths from containing dots
gtestutils: Forbid test paths from containing dots

In order to make some guarantees in an upcoming commit that test path
components won’t clash with file system names used by GLib, add a
restriction that test path components cannot start with a dot.

This is an API break, but one which anyone is unlikely to have hit. If
it is an issue, we can relax the restriction to be a warning.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

https://gitlab.gnome.org/GNOME/glib/issues/538

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib