Function require_eq

tests/unittests/test_assert.h:17–23

template <typename T, typename U>
void require_eq(const T & actual, const U & expected, const std::string & label) {
    if (!(actual == expected)) {
        std::ostringstream oss;
        oss << label << " mismatch: expected=" << expected << " actual=" << actual;
        throw std::runtime_error(oss.str());
    }
}

inline void require_close(float actual, float expected, float tolerance, const std::string & label) {
    const float diff = std::fabs(actual - expected);