def test_index_method_bounds(self):
c = Change(6)
self.assertRaises(ValueError, lambda: c.find_swap(-1))
self.assertFalse(c.find_swap(0))
self.assertFalse(c.find_swap(4))
self.assertRaises(IndexError, lambda: c.find_swap(5))
self.assertRaises(ValueError, lambda: c.find_place(-1))
self.assertTrue(c.find_place(0))
self.assertTrue(c.find_place(5))
self.assertRaises(IndexError, lambda: c.find_place(6))
self.assertRaises(ValueError, lambda: c.swap_pair(-1))
self.assertTrue(c.swap_pair(0))
self.assertTrue(c.swap_pair(4))
self.assertRaises(IndexError, lambda: c.swap_pair(5))
def test_index_method_bounds(self):
c = Change(6)
self.assertRaises(IndexError, lambda: c.find_swap(-1))
self.assertFalse(c.find_swap(0))
self.assertFalse(c.find_swap(4))
self.assertRaises(IndexError, lambda: c.find_swap(5))
self.assertRaises(IndexError, lambda: c.find_place(-1))
self.assertTrue(c.find_place(0))
self.assertTrue(c.find_place(5))
self.assertRaises(IndexError, lambda: c.find_place(6))
self.assertRaises(IndexError, lambda: c.swap_pair(-1))
self.assertTrue(c.swap_pair(0))
self.assertTrue(c.swap_pair(4))
self.assertRaises(IndexError, lambda: c.swap_pair(5))
def test_change_swappair(self):
c = Change(8, '-')
self.assertFalse(c.swap_pair(0))
self.assertEqual(c, '12')
self.assertTrue(c.swap_pair(1))
self.assertEqual(c, '14')
self.assertTrue(c.swap_pair(0))
self.assertEqual(c, '34')
self.assertTrue(c.swap_pair(2))
self.assertEqual(c, 'X')
self.assertFalse(c.swap_pair(2))
self.assertEqual(c, '34')
self.assertFalse(c.swap_pair(0))
self.assertEqual(c, '1234')
self.assertTrue(c.swap_pair(1))
self.assertEqual(c, '14')
self.assertFalse(c.swap_pair(6))
self.assertEqual(c, '1478')
self.assertRaises(IndexError, lambda: c.swap_pair(11))
self.assertRaises(IndexError, lambda: c.swap_pair(7))
def test_change_swappair(self):
c = Change(8, '-')
self.assertFalse(c.swap_pair(0))
self.assertEqual(c, '12')
self.assertTrue(c.swap_pair(1))
self.assertEqual(c, '14')
self.assertTrue(c.swap_pair(0))
self.assertEqual(c, '34')
self.assertTrue(c.swap_pair(2))
self.assertEqual(c, 'X')
self.assertFalse(c.swap_pair(2))
self.assertEqual(c, '34')
self.assertFalse(c.swap_pair(0))
self.assertEqual(c, '1234')
self.assertTrue(c.swap_pair(1))
self.assertEqual(c, '14')
self.assertFalse(c.swap_pair(6))
self.assertEqual(c, '1478')
self.assertRaises(IndexError, lambda: c.swap_pair(11))
self.assertRaises(IndexError, lambda: c.swap_pair(7))
def test_index_method_types(self):
c = Change(6)
c.find_swap(Bell(0))
c.find_swap('1')
c.find_swap(0)
c.find_place(Bell(0))
c.find_place('1')
c.find_place(0)
c.swap_pair(Bell(0))
c.swap_pair('1')
c.swap_pair(0)
self.assertRaises(TypeError, lambda: c.find_swap(self))
self.assertRaises(TypeError, lambda: c.find_place(self))
self.assertRaises(TypeError, lambda: c.swap_pair(self))
def test_change_many_bells(self):
n = MAX_BELLS + 4
c = Change(n)
self.assertFalse(c.find_swap(n - 2))
self.assertTrue(c.swap_pair(n - 2))
self.assertFalse(c.find_place(n - 1))
self.assertFalse(c.find_place(n - 2))
self.assertTrue(c.find_place(n - 3))
self.assertTrue(c.find_swap(n - 2))
self.assertFalse(c.find_swap(n - 3))
self.assertFalse(c.find_swap(n - 4))
self.assertEqual(c.count_places(), n - 2)
self.assertTrue(c.internal())
self.assertFalse(c.reverse().find_place(0))
self.assertTrue(c.reverse().find_place(3))
self.assertTrue(c.reverse().internal())
def test_change_many_bells(self):
n = Bell.MAX_BELLS + 4
c = Change(n)
self.assertFalse(c.find_swap(n - 2))
self.assertTrue(c.swap_pair(n - 2))
self.assertFalse(c.find_place(n - 1))
self.assertFalse(c.find_place(n - 2))
self.assertTrue(c.find_place(n - 3))
self.assertTrue(c.find_swap(n - 2))
self.assertFalse(c.find_swap(n - 3))
self.assertFalse(c.find_swap(n - 4))
self.assertEqual(c.count_places(), n - 2)
self.assertTrue(c.internal())
self.assertFalse(c.reverse().find_place(0))
self.assertTrue(c.reverse().find_place(3))
self.assertTrue(c.reverse().internal())