start.cpp
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//
// start.cpp
// ~~~~~~~~~
//
// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Disable autolinking for unit tests.
#if !defined(BOOST_ALL_NO_LIB)
#define BOOST_ALL_NO_LIB 1
#endif // !defined(BOOST_ALL_NO_LIB)
// Test that header file is self-contained.
#include "asio/execution/start.hpp"
#include "asio/error_code.hpp"
#include "../unit_test.hpp"
namespace exec = asio::execution;
static int call_count = 0;
struct no_start
{
};
struct const_member_start
{
void start() const ASIO_NOEXCEPT
{
++call_count;
}
};
#if !defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
namespace asio {
namespace traits {
template <>
struct start_member<const const_member_start>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
struct free_start_const_receiver
{
friend void start(const free_start_const_receiver&) ASIO_NOEXCEPT
{
++call_count;
}
};
#if !defined(ASIO_HAS_DEDUCED_START_FREE_TRAIT)
namespace asio {
namespace traits {
template <>
struct start_free<const free_start_const_receiver>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_START_FREE_TRAIT)
struct non_const_member_start
{
void start() ASIO_NOEXCEPT
{
++call_count;
}
};
#if !defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
namespace asio {
namespace traits {
template <>
struct start_member<non_const_member_start>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
struct free_start_non_const_receiver
{
friend void start(free_start_non_const_receiver&) ASIO_NOEXCEPT
{
++call_count;
}
};
#if !defined(ASIO_HAS_DEDUCED_START_FREE_TRAIT)
namespace asio {
namespace traits {
template <>
struct start_free<free_start_non_const_receiver>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_START_FREE_TRAIT)
void test_can_start()
{
ASIO_CONSTEXPR bool b1 = exec::can_start<
no_start&>::value;
ASIO_CHECK(b1 == false);
ASIO_CONSTEXPR bool b2 = exec::can_start<
const no_start&>::value;
ASIO_CHECK(b2 == false);
ASIO_CONSTEXPR bool b3 = exec::can_start<
const_member_start&>::value;
ASIO_CHECK(b3 == true);
ASIO_CONSTEXPR bool b4 = exec::can_start<
const const_member_start&>::value;
ASIO_CHECK(b4 == true);
ASIO_CONSTEXPR bool b5 = exec::can_start<
free_start_const_receiver&>::value;
ASIO_CHECK(b5 == true);
ASIO_CONSTEXPR bool b6 = exec::can_start<
const free_start_const_receiver&>::value;
ASIO_CHECK(b6 == true);
ASIO_CONSTEXPR bool b7 = exec::can_start<
non_const_member_start&>::value;
ASIO_CHECK(b7 == true);
ASIO_CONSTEXPR bool b8 = exec::can_start<
const non_const_member_start&>::value;
ASIO_CHECK(b8 == false);
ASIO_CONSTEXPR bool b9 = exec::can_start<
free_start_non_const_receiver&>::value;
ASIO_CHECK(b9 == true);
ASIO_CONSTEXPR bool b10 = exec::can_start<
const free_start_non_const_receiver&>::value;
ASIO_CHECK(b10 == false);
}
void increment(int* count)
{
++(*count);
}
void test_start()
{
call_count = 0;
const_member_start ex1 = {};
exec::start(ex1);
ASIO_CHECK(call_count == 1);
call_count = 0;
const const_member_start ex2 = {};
exec::start(ex2);
ASIO_CHECK(call_count == 1);
call_count = 0;
exec::start(const_member_start());
ASIO_CHECK(call_count == 1);
call_count = 0;
free_start_const_receiver ex3 = {};
exec::start(ex3);
ASIO_CHECK(call_count == 1);
call_count = 0;
const free_start_const_receiver ex4 = {};
exec::start(ex4);
ASIO_CHECK(call_count == 1);
call_count = 0;
exec::start(free_start_const_receiver());
ASIO_CHECK(call_count == 1);
call_count = 0;
non_const_member_start ex5 = {};
exec::start(ex5);
ASIO_CHECK(call_count == 1);
call_count = 0;
free_start_non_const_receiver ex6 = {};
exec::start(ex6);
ASIO_CHECK(call_count == 1);
}
ASIO_TEST_SUITE
(
"start",
ASIO_TEST_CASE(test_can_start)
ASIO_TEST_CASE(test_start)
)