def test_clear(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
self.assertEqual(len(od), len(pairs))
od.clear()
self.assertEqual(len(od), 0)
def test_init(self):
try:
OrderedDict([('a', 1), ('b', 2)], None) # too many args
assert False
except TypeError:
pass
else:
assert False
pairs = [('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)]
self.assertEqual(sorted(OrderedDict(dict(pairs)).items()), pairs) # dict input
self.assertEqual(sorted(OrderedDict(**dict(pairs)).items()), pairs) # kwds input
self.assertEqual(list(OrderedDict(pairs).items()), pairs) # pairs input
self.assertEqual(list(OrderedDict([('a', 1), ('b', 2), ('c', 9), ('d', 4)],
c=3, e=5).items()), pairs) # mixed input
# make sure no positional args conflict with possible kwdargs
self.assertEqual(inspect.getargspec(OrderedDict.__dict__['__init__']).args,
['self'])
# Make sure that direct calls to __init__ do not clear previous contents
d = OrderedDict([('a', 1), ('b', 2), ('c', 3), ('d', 44), ('e', 55)])
d.__init__([('e', 5), ('f', 6)], g=7, d=4)
self.assertEqual(list(d.items()),
[('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5), ('f', 6), ('g', 7)])
def test_reduce_not_too_fat(self):
# do not save instance dictionary if not needed
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
od = OrderedDict(pairs)
self.assertEqual(len(od.__reduce__()), 2)
od.x = 10
self.assertEqual(len(od.__reduce__()), 3)
def test_yaml_linkage(self):
# Verify that __reduce__ is setup in a way that supports PyYAML's dump() feature.
# In yaml, lists are native but tuples are not.
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
od = OrderedDict(pairs)
# yaml.dump(od) -->
# '!!python/object/apply:__main__.OrderedDict\n- - [a, 1]\n - [b, 2]\n'
self.assertTrue(all(type(pair)==list for pair in od.__reduce__()[1]))
def test_reinsert(self):
# Given insert a, insert b, delete a, re-insert a,
# verify that a is now later than b.
od = OrderedDict()
od['a'] = 1
od['b'] = 2
del od['a']
od['a'] = 1
self.assertEqual(list(od.items()), [('b', 2), ('a', 1)])
def test_delitem(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
od = OrderedDict(pairs)
del od['a']
self.assertNotIn('a', od)
try:
del od['a']
assert False
except KeyError:
pass
else:
assert False
self.assertEqual(list(od.items()), pairs[:2] + pairs[3:])
def test_popitem(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
while pairs:
self.assertEqual(od.popitem(), pairs.pop())
try:
od.popitem()
assert False
except:
pass
else:
assert False
self.assertEqual(len(od), 0)
def test_pop(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
shuffle(pairs)
while pairs:
k, v = pairs.pop()
self.assertEqual(od.pop(k), v)
try:
od.pop('xyz')
assert False
except KeyError:
pass
else:
assert False
self.assertEqual(len(od), 0)
self.assertEqual(od.pop(k, 12345), 12345)
def test_iterators(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
self.assertEqual(list(od), [t[0] for t in pairs])
self.assertEqual(od.keys()[:], [t[0] for t in pairs])
self.assertEqual(od.values()[:], [t[1] for t in pairs])
self.assertEqual(od.items()[:], pairs)
self.assertEqual(list(od.iterkeys()), [t[0] for t in pairs])
self.assertEqual(list(od.itervalues()), [t[1] for t in pairs])
self.assertEqual(list(od.iteritems()), pairs)
self.assertEqual(list(reversed(od)),
[t[0] for t in reversed(pairs)])
def test_setdefault(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
pair_order = list(od.items())
self.assertEqual(od.setdefault('a', 10), 3)
# make sure order didn't change
self.assertEqual(list(od.items()), pair_order)
self.assertEqual(od.setdefault('x', 10), 10)
# make sure 'x' is added to the end
self.assertEqual(list(od.items())[-1], ('x', 10))
def test_copying(self):
# Check that ordered dicts are copyable, deepcopyable, picklable,
# and have a repr/eval round-trip
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
od = OrderedDict(pairs)
update_test = OrderedDict()
update_test.update(od)
for i, dup in enumerate([
od.copy(),
copy.copy(od),
copy.deepcopy(od),
pickle.loads(pickle.dumps(od, 0)),
pickle.loads(pickle.dumps(od, 1)),
pickle.loads(pickle.dumps(od, 2)),
pickle.loads(pickle.dumps(od, -1)),
eval(repr(od)),
update_test,
OrderedDict(od),
]):
self.assertTrue(dup is not od)
self.assertEquals(dup, od)
self.assertEquals(list(dup.items()), list(od.items()))
self.assertEquals(len(dup), len(od))
self.assertEquals(type(dup), type(od))
def test_update(self):
try:
OrderedDict().update([('a', 1), ('b', 2)], None) # too many args
assert False
except TypeError:
pass
else:
assert False
pairs = [('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)]
od = OrderedDict()
od.update(dict(pairs))
self.assertEqual(sorted(od.items()), pairs) # dict input
od = OrderedDict()
od.update(**dict(pairs))
self.assertEqual(sorted(od.items()), pairs) # kwds input
od = OrderedDict()
od.update(pairs)
self.assertEqual(list(od.items()), pairs) # pairs input
od = OrderedDict()
od.update([('a', 1), ('b', 2), ('c', 9), ('d', 4)], c=3, e=5)
self.assertEqual(list(od.items()), pairs) # mixed input
# Make sure that direct calls to update do not clear previous contents
# add that updates items are not moved to the end
d = OrderedDict([('a', 1), ('b', 2), ('c', 3), ('d', 44), ('e', 55)])
d.update([('e', 5), ('f', 6)], g=7, d=4)
self.assertEqual(list(d.items()),
[('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5), ('f', 6), ('g', 7)])
def test_setitem(self):
od = OrderedDict([('d', 1), ('b', 2), ('c', 3), ('a', 4), ('e', 5)])
od['c'] = 10 # existing element
od['f'] = 20 # new element
self.assertEqual(list(od.items()),
[('d', 1), ('b', 2), ('c', 10), ('a', 4), ('e', 5), ('f', 20)])
