def test_calculate_next_position(self):
'''
Tests the calculate_next_position method of Calculator class.
'''
alpha = 0.05
test_map = 20.0
self.assertEqual(1, \
Calculator.calculate_next_position(1.0, 9.0, \
test_map, alpha, 2.0))
self.assertAlmostEqual(1.08333, \
Calculator.calculate_next_position(1.0, 4.0, \
test_map, alpha, 2.0), \
places=5)
# testing the torus points 2 and 19
self.assertAlmostEqual(1.916666, \
Calculator.calculate_next_position(2.0, 19.0, \
test_map, alpha, 2.0), \
places=5)
