Method testIssue876

test/stream_parser.cpp:1243–1255

    }

    void
    testIssue876()
    {
        stream_parser p;
        p.write_some( R"("\u20")", 5 );

        std::string s = "19";
        for( std::size_t i = 0; i < BOOST_JSON_STACK_BUFFER_SIZE; ++i )
            s += " ";
        s += "\"";
        p.write_some( s.data(), s.size() ); // this asserted because of a bug
        BOOST_TEST( p.release().is_string() );
    }

    // https://github.com/boostorg/json/pull/814
    void