Function getMethodsForDirection

tests/unit/include/test_derivs.cxx:174–189

Get all the available methods for this direction and turn it from a collection of strings to a collection of tuples of the direction, order, and strings so that the test fixture knows which direction we're using

// order, and strings so that the test fixture knows which direction
// we're using
auto getMethodsForDirection(DERIV derivative_order, DIRECTION direction)
    -> std::vector<std::tuple<DIRECTION, DERIV, std::string>> {

  auto available_methods = DerivativeStore<Field3D>::getInstance().getAvailableMethods(
      derivative_order, direction);

  // Method names together with the current direction and derivative type
  std::vector<std::tuple<DIRECTION, DERIV, std::string>> methods{};

  std::transform(std::begin(available_methods), std::end(available_methods),
                 std::back_inserter(methods), [&](std::string method) {
                   return std::make_tuple(direction, derivative_order, method);
                 });

  return methods;
};

// Returns the method out of the direction/order/method tuple for
// printing the test name