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//
// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail 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)
//
// Official repository: https://github.com/boostorg/beast
//
#ifndef BOOST_BEAST_TEST_FAIL_COUNT_HPP
#define BOOST_BEAST_TEST_FAIL_COUNT_HPP
#include <boost/beast/core/detail/config.hpp>
#include <boost/beast/_experimental/test/error.hpp>
#include <cstdlib>
namespace boost {
namespace beast {
namespace test {
/** A countdown to simulated failure
On the Nth operation, the class will fail with the specified
error code, or the default error code of @ref error::test_failure.
Instances of this class may be used to build objects which
are specifically designed to aid in writing unit tests, for
interfaces which can throw exceptions or return `error_code`
values representing failure.
*/
class fail_count
{
std::size_t n_;
std::size_t i_ = 0;
error_code ec_;
public:
fail_count(fail_count&&) = default;
/** Construct a counter
@param n The 0-based index of the operation to fail on or after
@param ev An optional error code to use when generating a simulated failure
*/
BOOST_BEAST_DECL
explicit
fail_count(
std::size_t n,
error_code ev = error::test_failure);
/// Throw an exception on the Nth failure
BOOST_BEAST_DECL
void
fail();
/// Set an error code on the Nth failure
BOOST_BEAST_DECL
bool
fail(error_code& ec);
};
} // test
} // beast
} // boost
#ifdef BOOST_BEAST_HEADER_ONLY
#include <boost/beast/_experimental/test/impl/fail_count.ipp>
#endif
#endif
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