OK, good to know!

Igloo uses showhouse::Stringizer to display actual and expected values.
If there is a specialization of showhouse::Stringizer (in this case for std::tuple) igloo will automatically use it.
You don't need to modify the tests.

Cheers!

OK, lots of thanks! I will try. How do I use it in the tests?

You're talking about the C++ version, right?

@g964
You can use the full power of igloo / snowhouse by putting the following in the "Preloaded" section:

#include <sstream>
#include <tuple>

namespace snowhouse {
    template<class Tuple, std::size_t N>
    struct TuplePrinter {
        static void print(std::ostream& out, const Tuple& t) {
            TuplePrinter<Tuple, N - 1>::print(out, t);
            out << ", " << Stringizer<decltype(std::get<N-1>(t))>::ToString(std::get<N-1>(t));
        }
    };
    template<class Tuple>
    struct TuplePrinter<Tuple, 1> {
        static void print(std::ostream& out, const Tuple& t) {
            out << Stringizer<decltype(std::get<0>(t))>::ToString(std::get<0>(t));
        }
    };
    template<typename... Args>
    struct Stringizer<std::tuple<Args...>> {
        static std::string ToString(const std::tuple<Args...>& tuple) {
            std::ostringstream out;
            out << "(";
            if (sizeof...(Args))
                TuplePrinter<decltype(tuple), sizeof...(Args)>::print(out, tuple);
            out << ")";
            return out.str();
        }
    };
}

Then

Expected: equal to [ [unsupported type], [unsupported type] ]
Actual: [ [unsupported type], [unsupported type] ]

becomes

Expected: equal to [ (2, 4, 2000), (4, 0, 103) ]
Actual: [ (6, 1, 123), (16, 2, 4444) ]

It happens when there is a flaw in your code.

Expected: equal to [ [unsupported type], [unsupported type] ]
Actual: [ [unsupported type], [unsupported type] ]
why it happened this???

(100+sqrt(200200-100100)+sqrt(250250-200200)+sqrt(300300-250250)+300+0.5)/1