diff options
Diffstat (limited to 'test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp')
-rw-r--r-- | test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp b/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp new file mode 100644 index 000000000000..30081fc3ada3 --- /dev/null +++ b/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp @@ -0,0 +1,58 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// 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. +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03, c++11 + +// <experimental/coroutine> + +// template <class Promise = void> +// struct coroutine_handle; + +// constexpr explicit operator bool() const noexcept + +#include <experimental/coroutine> +#include <type_traits> +#include <cassert> + +#include "test_macros.h" + +namespace coro = std::experimental; + +template <class C> +void do_test() { + static_assert(std::is_nothrow_constructible<bool, C>::value, ""); + static_assert(!std::is_convertible<C, bool>::value, ""); + { + constexpr C c; ((void)c); + static_assert(bool(c) == false, ""); + } + { // null case + const C c = {}; ((void)c); + ASSERT_NOEXCEPT(bool(c)); + if (c) + assert(false); + else + assert(true); + assert(c.address() == nullptr); + assert(bool(c) == false); + } + { // non-null case + char dummy = 42; + C c = C::from_address((void*)&dummy); + assert(c.address() == &dummy); + assert(bool(c) == true); + } +} + +int main() +{ + do_test<coro::coroutine_handle<>>(); + do_test<coro::coroutine_handle<int>>(); +} |