Method bad_impl

test/parse.cpp:56–69

    template <class ErrorCode>
    void
    bad_impl(string_view s)
    {
        ErrorCode ec;
        auto jv = parse(s, ec);
        BOOST_TEST(ec);
        BOOST_TEST(hasLocation(ec));

        ec = {};
        std::stringstream ss(s);
        auto jv2 = parse(ss, ec);
        BOOST_TEST(ec);
        BOOST_TEST(hasLocation(ec));
    }

    void
    good(string_view s)