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diff --git a/boost/beast/experimental/test/impl/fail_count.ipp b/boost/beast/experimental/test/impl/fail_count.ipp
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+++ b/boost/beast/experimental/test/impl/fail_count.ipp
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+//
+// Copyright (c) 2016-2017 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_IMPL_FAIL_COUNT_IPP
+#define BOOST_BEAST_TEST_IMPL_FAIL_COUNT_IPP
+
+#include <boost/beast/core/error.hpp>
+#include <boost/beast/experimental/test/error.hpp>
+#include <boost/throw_exception.hpp>
+
+namespace boost {
+namespace beast {
+namespace test {
+
+inline
+fail_count::
+fail_count(
+    std::size_t n,
+    error_code ev)
+    : n_(n)
+    , ec_(ev)
+{
+}
+
+inline
+void
+fail_count::
+fail()
+{
+    if(i_ < n_)
+        ++i_;
+    if(i_ == n_)
+        BOOST_THROW_EXCEPTION(system_error{ec_});
+}
+
+inline
+bool
+fail_count::
+fail(error_code& ec)
+{
+    if(i_ < n_)
+        ++i_;
+    if(i_ == n_)
+    {
+        ec = ec_;
+        return true;
+    }
+    ec.assign(0, ec.category());
+    return false;
+}
+
+} // test
+} // beast
+} // boost
+
+#endif