def test_point_distance(self):
"""Test the point_distance method."""
p1 = np.array([0, 0])
p2 = np.array([0, 7])
self.assertEquals(ConvexHull.point_distance(p1, p2), 7)
p1 = np.array([3.5, 7.4])
p2 = np.array([-6, -9.2])
self.assertEquals(ConvexHull.point_distance(p1, p2), 19.126160095534075)
