common.hpp

#pragma once
 
#include <stdexcept>
 
template <class T>
void are_equal(const T& a, const T& b)
{
    if (!(a == b))
        throw std::runtime_error("values are not equal");
}
 
template <class E, typename F>
void expect_exception(F functor)
{
    try { functor(); }
    catch (const E&) { return; }
    throw std::runtime_error("exception expected");
}