24     E e1(2);  in test1()  local
25     e1();  in test1()
27     e2 = e1;  in test1()
28     assert(e1 == e2);  in test1()
29     assert(e1() == e2());  in test1()
30     E::result_type k = e1();  in test1()
31     assert(e1 != e2);  in test1()
33     assert(e1 == e2);  in test1()
40     E e1(3);  in test2()  local
41     e1();  in test2()
43     e2 = e1;  in test2()
44     assert(e1 == e2);  in test2()
45     assert(e1() == e2());  in test2()
46     E::result_type k = e1();  in test2()
47     assert(e1 != e2);  in test2()
49     assert(e1 == e2);  in test2()