def test_init(self):
"""Partners should init with empty list and stay free of conflicts"""
self.assertEqual(Partners([]), [])
empty = Partners([None] * 6)
self.assertEqual(empty, [None, None, None, None, None, None])
self.assertRaises(ValueError, empty.__setitem__, 2, 2)
empty[2] = 3
self.assertEqual(empty, [None, None, 3, 2, None, None])
empty[3] = 1
self.assertEqual(empty, [None, 3, None, 1, None, None])
empty[3] = 5
self.assertEqual(empty, [None, None, None, 5, None, 3])
empty[1] = None
self.assertEqual(empty, [None, None, None, 5, None, 3])
def test_not_implemented(self):
"""Partners not_implemented should raise error for 'naughty' methods"""
p = Partners([None, 3, 1, 5, 4])
self.assertRaises(NotImplementedError, p.pop)
self.assertRaises(NotImplementedError, p.sort)
self.assertRaises(NotImplementedError, p.__delitem__, 3)
def test_toPairs(self):
"""Partners toPairs() should return a Pairs object"""
p = Partners([None, 3, None, 1, 5, 4])
self.assertEqualItems(p.toPairs(), [(1, 3), (4, 5)])
assert isinstance(p.toPairs(), Pairs)
self.assertEqual(Partners([None] * 10).toPairs(), [])
def test_toPairs(self):
"""Partners toPairs() should return a Pairs object"""
p = Partners([None,3,None,1,5,4])
self.assertEqualItems(p.toPairs(),[(1,3),(4,5)])
assert isinstance(p.toPairs(),Pairs)
self.assertEqual(Partners([None]*10).toPairs(),[])