test "link granting project permissions to unreadable user is invalid" do
refute new_active_link_valid?(tail_uuid: users(:admin).uuid)
end
+
+ test "permission link can't exist on past collection versions" do
+ refute new_active_link_valid?(tail_uuid: groups(:public).uuid,
+ head_uuid: collections(:w_a_z_file_version_1).uuid)
+ end
end