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