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()
64   ErrorOr<std::unique_ptr<int>> b2(ErrorOr<int *>(nullptr));  in TEST()
65   ErrorOr<int *> b3(nullptr);  in TEST()
66   ErrorOr<std::unique_ptr<int>> b4(b3);  in TEST()
69 TEST(ErrorOr, Comparison) {  in TEST()  argument
70   ErrorOr<int> x(errc::no_such_file_or_directory);  in TEST()
74 TEST(ErrorOr, ImplicitConversion) {  in TEST()  argument
75   ErrorOr<std::string> x("string literal");  in TEST()
79 TEST(ErrorOr, ImplicitConversionCausesMove) {  in TEST()  argument
86   ErrorOr<Destination> x = s;  in TEST()
90 TEST(ErrorOr, ImplicitConversionNoAmbiguity) {  in TEST()  argument
96   ErrorOr<CastsToErrorCode> x1(casts_to_error_code);  in TEST()
97   ErrorOr<CastsToErrorCode> x2 = casts_to_error_code;  in TEST()
98   ErrorOr<CastsToErrorCode> x3 = {casts_to_error_code};  in TEST()
99   ErrorOr<CastsToErrorCode> x4{casts_to_error_code};  in TEST()
100   ErrorOr<CastsToErrorCode> x5(errc::no_such_file_or_directory);  in TEST()
101   ErrorOr<CastsToErrorCode> x6 = errc::no_such_file_or_directory;  in TEST()
102   ErrorOr<CastsToErrorCode> x7 = {errc::no_such_file_or_directory};  in TEST()
103   ErrorOr<CastsToErrorCode> x8{errc::no_such_file_or_directory};  in TEST()
117     !std::is_convertible<const ErrorOr<int *> &,
118                          ErrorOr<std::unique_ptr<int>>>::value,
124     !std::is_convertible<ErrorOr<int *> &&,
125                          ErrorOr<std::unique_ptr<int>>>::value,
131 static_assert(!std::is_assignable<ErrorOr<std::unique_ptr<int>>,
132                                   const ErrorOr<int *> &>::value,
137 static_assert(!std::is_assignable<ErrorOr<std::unique_ptr<int>>,
138                                   ErrorOr<int *> &&>::value,