14   struct ttyent *typ = getttyent();  in test1()  local
15   assert(typ && typ->ty_name != nullptr);  in test1()
16   assert(typ->ty_type != nullptr);  in test1()
21   struct ttyent *typ = getttynam("console");  in test2()  local
22   assert(typ && typ->ty_name != nullptr);  in test2()
23   assert(typ->ty_type != nullptr);  in test2()
31   struct ttyent *typ = getttyent();  in test3()  local
32   assert(typ && typ->ty_name != nullptr);  in test3()
33   assert(typ->ty_type != nullptr);  in test3()
42   struct ttyent *typ = getttyent();  in test4()  local
43   assert(typ && typ->ty_name != nullptr);  in test4()
44   assert(typ->ty_type != nullptr);  in test4()
45   assert(typ->ty_class != nullptr);  in test4()