def test_consistentD_delete(self):
foo = util.ConsistentDict(a=1, b=2)
del foo['a']
self.assertEqual(foo['b'], 2)
self.assertEqual(len(foo), 1)
foo = util.ConsistentDict(a=1, b=2)
bar = foo.pop('a')
self.assertEqual(bar, 1)
self.assertEqual(len(foo), 1)
foo = util.ConsistentDict(a=1, b=2)
bar, baz = foo.popitem()
self.assertEqual(bar, 'a')
self.assertEqual(baz, 1)
self.assertEqual(len(foo), 1)
def test_consistentD_normal_operation(self):
foo = util.ConsistentDict(a=1, b=2)
self.assertTrue(isinstance(
foo, dict)) # should really be testing for MutableMapping
self.assertEqual(foo['b'], 2)
# all dicts are OrderedDicts starting with 3.7
self.assertEqual(tuple(foo.keys()), ('a', 'b'))
self.assertEqual(tuple(foo.values()), (1, 2))
self.assertEqual(tuple(str(k) + str(v) for k, v in foo.items()),
('a1', 'b2'))
foo.update({'c': 3, 'd': 4})
self.assertEqual(foo['d'], 4)
self.assertEqual(len(foo), 4)
test = foo.setdefault('d', 5)
self.assertEqual(test, 4)
self.assertEqual(foo['d'], 4)
def test_consistentD_overwrite_same(self):
foo = util.ConsistentDict(a=1, b=2)
raised_exc = False
try:
foo['b'] = 2
except Exception:
raised_exc = True
self.assertFalse(raised_exc)
raised_exc = False
try:
foo.update({'c': 3, 'a': 1})
except Exception:
raised_exc = True
self.assertFalse(raised_exc)
self.assertEqual(foo['a'], 1)
self.assertEqual(foo['b'], 2)
self.assertEqual(foo['c'], 3)
def test_consistentD_overwrite_different(self):
foo = util.ConsistentDict(a=1, b=2)
with self.assertRaises(exceptions.WormKeyError):
foo['a'] = 3
with self.assertRaises(exceptions.WormKeyError):
foo.update({'c': 3, 'a': 4})