def test_serialization(self):
'''Test serializing and deserializing data to `__json__`'''
inst = reverse.BidirectionalDict({i: i**2 for i in range(10)})
serialized = inst.__json__()
deserialized = inst.loadjson(serialized['__data__'])
self.assertEquals(deserialized, inst)
def test_update(self):
'''Test `update` updates both forward and reverse dicts'''
inst = reverse.BidirectionalDict()
inst.update({1: 3})
self.assertIn(1, inst)
self.assertIn(3, inst.reverse)
def test_setdefault(self):
'''Test `setdefault` updates both forward and reverse dicts'''
inst = reverse.BidirectionalDict()
value = inst.setdefault(1, 3)
self.assertIn(1, inst)
self.assertIn(3, inst.reverse)
self.assertEquals(value, 3)
def test_clear(self):
'''Test `clear` updates both forward and reverse dicts'''
inst = reverse.BidirectionalDict()
inst[1] = 3
inst.clear()
self.assertFalse(inst)
self.assertFalse(inst.reverse)
def test_lookups(self):
'''Test forward and reverse lookups'''
inst = reverse.BidirectionalDict()
inst[1] = 3
self.assertEquals(inst[1], 3)
self.assertEquals(inst(3), 1)
def test_pop(self):
'''Test `pop` updates both forward and reverse dicts'''
inst = reverse.BidirectionalDict()
inst[1] = 3
value = inst.pop(1)
self.assertFalse(inst)
self.assertFalse(inst.reverse)
self.assertEquals(value, 3)
def test_popitem(self):
'''Test `popitem` updates both forward and reverse dicts'''
inst = reverse.BidirectionalDict()
inst[1] = 3
item = inst.popitem()
self.assertFalse(inst)
self.assertFalse(inst.reverse)
self.assertEquals(item, (1, 3))
def test_hashability(self):
'''Test both key and value must be hashable'''
inst = reverse.BidirectionalDict()
inst[1] = 3
with self.assertRaises(TypeError):
inst[{1}] = 3
with self.assertRaises(TypeError):
inst[3] = {1}