diff options
Diffstat (limited to 'test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp')
-rw-r--r-- | test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp b/test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp new file mode 100644 index 000000000000..e91805e9c8e5 --- /dev/null +++ b/test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp @@ -0,0 +1,53 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <optional> + +// T& optional<T>::value(); + +#include <experimental/optional> +#include <type_traits> +#include <cassert> + +#if _LIBCPP_STD_VER > 11 + +using std::experimental::optional; +using std::experimental::bad_optional_access; + +struct X +{ + X() = default; + X(const X&) = delete; + constexpr int test() const {return 3;} + int test() {return 4;} +}; + +#endif // _LIBCPP_STD_VER > 11 + +int main() +{ +#if _LIBCPP_STD_VER > 11 + { + optional<X> opt; + opt.emplace(); + assert(opt.value().test() == 4); + } + { + optional<X> opt; + try + { + opt.value(); + assert(false); + } + catch (const bad_optional_access&) + { + } + } +#endif // _LIBCPP_STD_VER > 11 +} |