//
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// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Official repository: https://github.com/boostorg/beast
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//
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#ifndef BOOST_BEAST_TEST_FAIL_COUNT_HPP
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#define BOOST_BEAST_TEST_FAIL_COUNT_HPP
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#include <boost/beast/core/detail/config.hpp>
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#include <boost/beast/_experimental/test/error.hpp>
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#include <cstdlib>
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namespace boost {
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namespace beast {
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namespace test {
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/** A countdown to simulated failure
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On the Nth operation, the class will fail with the specified
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error code, or the default error code of @ref error::test_failure.
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Instances of this class may be used to build objects which
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are specifically designed to aid in writing unit tests, for
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interfaces which can throw exceptions or return `error_code`
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values representing failure.
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*/
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class fail_count
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{
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std::size_t n_;
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std::size_t i_ = 0;
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error_code ec_;
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public:
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fail_count(fail_count&&) = default;
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/** Construct a counter
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@param n The 0-based index of the operation to fail on or after
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@param ev An optional error code to use when generating a simulated failure
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*/
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BOOST_BEAST_DECL
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explicit
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fail_count(
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std::size_t n,
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error_code ev = error::test_failure);
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/// Throw an exception on the Nth failure
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BOOST_BEAST_DECL
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void
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fail();
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/// Set an error code on the Nth failure
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BOOST_BEAST_DECL
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bool
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fail(error_code& ec);
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};
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} // test
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} // beast
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} // boost
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#ifdef BOOST_BEAST_HEADER_ONLY
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#include <boost/beast/_experimental/test/impl/fail_count.ipp>
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#endif
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#endif
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