19 ErrorOr<int> t1() {return 1;}  in t1()
20 ErrorOr<int> t2() { return errc::invalid_argument; }  in t2()
22 TEST(ErrorOr, SimpleValue) {  in TEST()  argument
23   ErrorOr<int> a = t1();  in TEST()
29   ErrorOr<int> b = a;  in TEST()
40 ErrorOr<std::unique_ptr<int> > t3() {  in t3()
44 TEST(ErrorOr, Types) {  in TEST()  argument
46   ErrorOr<int&> a(x);  in TEST()
57 TEST(ErrorOr, Covariant) {  in TEST()  argument
58   ErrorOr<B*> b(ErrorOr<D*>(nullptr));  in TEST()
59   b = ErrorOr<D*>(nullptr);  in TEST()
61   ErrorOr<std::unique_ptr<B> > b1(ErrorOr<std::unique_ptr<D> >(nullptr));  in TEST()
62   b1 = ErrorOr<std::unique_ptr<D> >(nullptr);  in TEST()