SnowmanTest

void SnowmanTest() {
        {
            Document doc;
            Snowman s(Point{30, 20}, 10.0);
            s.Draw(doc);
            doc.Render(cout);
            cout << endl;
        } {
            Document doc;
            Snowman s(Point{33, 10}, 12.0);
            s.Draw(doc);
            doc.Render(cout);
        }
    }

<?xml version="1.0" encoding="UTF-8" ?>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <circle cx="30" cy="70" r="20" />
  <circle cx="30" cy="40" r="15" />
  <circle cx="30" cy="20" r="10" />
</svg>
<?xml version="1.0" encoding="UTF-8" ?>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <circle cx="33" cy="70" r="24" />
  <circle cx="33" cy="34" r="18" />
  <circle cx="33" cy="10" r="12" />
</svg>