def test_simple_sides(self):
"""Test returning the sides of a shape containing a single point"""
origin = Point(4, 4)
shape = Shape.I1(origin)
self.assertEqual(shape.sides(), origin.sides())
def test_sides(self):
"""Test a point's sides"""
point = Point(4, 4)
sides = {Point(5, 4), Point(4, 5), Point(3, 4), Point(4, 3)}
self.assertEqual(point.sides(), sides)