26     E e1(2);  in test1()  local
27     e1();  in test1()
29     e2 = e1;  in test1()
30     assert(e1 == e2);  in test1()
31     assert(e1() == e2());  in test1()
32     E::result_type k = e1();  in test1()
33     assert(e1 != e2);  in test1()
35     assert(e1 == e2);  in test1()
42     E e1(3);  in test2()  local
43     e1();  in test2()
45     e2 = e1;  in test2()
46     assert(e1 == e2);  in test2()
47     assert(e1() == e2());  in test2()
48     E::result_type k = e1();  in test2()
49     assert(e1 != e2);  in test2()
51     assert(e1 == e2);  in test2()