Add water to a depth of 3cm to a pot. Add the onion, carrots, leeks and garlic and cook over a low heat for 6-7 minutes until they are soft.
Add some black pepper to the pot then add the tomatoes and stock and bring to a simmer.
Add the wholewheat pasta to the pot and cook until the pasta is cooked through but still retains its shape.
Serve into warm soup bowls.