In a large pot, heat oil over medium heat. Add garlic and cook for a few minutes until garlic is fragrant. Add water, tomatoes, and juice. Increase heat to high and bring to a boil. Boil for 5 minutes.
In a small bowl, mash half the beans. Add mashed and unmashed beans to pot. Add pasta. Stir briefly. Bring back to a boil, then reduce heat and simmer until pasta is tender. Ladle into bowls and drizzle a little oil on the top of each serving.
Notes: A cup (250mL) frozen vegetables could be added to the simmering soup.