def test_clear_bidirectionally(self):
bd = utils.bidict()
bd['foo'] = 'bar'
bd.clear()
self.assertEqual(bd, {})
self.assertEqual(bd.inverse, {})
def test_inverse_set_correctly(self):
bd = utils.bidict()
bd['foo'] = 'bar'
self.assertEqual(bd.inverse['bar'], 'foo')
bd['foo'] = 'baz'
self.assertEqual(bd.inverse['baz'], 'foo')
def test_on_delete_remove_pair(self):
bd = utils.bidict()
bd['foo'] = 'bar'
del bd['foo']
self.assertEqual(bd, {})
self.assertEqual(bd.inverse, {})
def test_on_pop_pair(self):
bd = utils.bidict()
bd['foo'] = 'bar'
value, inverse_value = bd.pop('foo')
self.assertEqual(value, 'bar')
self.assertEqual(inverse_value, 'foo')