303 lines
13 KiB
Python
303 lines
13 KiB
Python
import copy
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import pickle
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from random import shuffle
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import unittest
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from collections import OrderedDict
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from collections import MutableMapping
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from test import mapping_tests, test_support
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class TestOrderedDict(unittest.TestCase):
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def test_init(self):
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with self.assertRaises(TypeError):
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OrderedDict([('a', 1), ('b', 2)], None) # too many args
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pairs = [('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)]
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self.assertEqual(sorted(OrderedDict(dict(pairs)).items()), pairs) # dict input
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self.assertEqual(sorted(OrderedDict(**dict(pairs)).items()), pairs) # kwds input
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self.assertEqual(list(OrderedDict(pairs).items()), pairs) # pairs input
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self.assertEqual(list(OrderedDict([('a', 1), ('b', 2), ('c', 9), ('d', 4)],
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c=3, e=5).items()), pairs) # mixed input
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# make sure no positional args conflict with possible kwdargs
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self.assertEqual(list(OrderedDict(self=42).items()), [('self', 42)])
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self.assertEqual(list(OrderedDict(other=42).items()), [('other', 42)])
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self.assertRaises(TypeError, OrderedDict, 42)
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self.assertRaises(TypeError, OrderedDict, (), ())
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self.assertRaises(TypeError, OrderedDict.__init__)
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# Make sure that direct calls to __init__ do not clear previous contents
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d = OrderedDict([('a', 1), ('b', 2), ('c', 3), ('d', 44), ('e', 55)])
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d.__init__([('e', 5), ('f', 6)], g=7, d=4)
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self.assertEqual(list(d.items()),
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[('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5), ('f', 6), ('g', 7)])
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def test_update(self):
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with self.assertRaises(TypeError):
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OrderedDict().update([('a', 1), ('b', 2)], None) # too many args
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pairs = [('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)]
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od = OrderedDict()
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od.update(dict(pairs))
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self.assertEqual(sorted(od.items()), pairs) # dict input
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od = OrderedDict()
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od.update(**dict(pairs))
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self.assertEqual(sorted(od.items()), pairs) # kwds input
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od = OrderedDict()
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od.update(pairs)
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self.assertEqual(list(od.items()), pairs) # pairs input
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od = OrderedDict()
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od.update([('a', 1), ('b', 2), ('c', 9), ('d', 4)], c=3, e=5)
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self.assertEqual(list(od.items()), pairs) # mixed input
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# Issue 9137: Named argument called 'other' or 'self'
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# shouldn't be treated specially.
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od = OrderedDict()
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od.update(self=23)
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self.assertEqual(list(od.items()), [('self', 23)])
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od = OrderedDict()
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od.update(other={})
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self.assertEqual(list(od.items()), [('other', {})])
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od = OrderedDict()
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od.update(red=5, blue=6, other=7, self=8)
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self.assertEqual(sorted(list(od.items())),
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[('blue', 6), ('other', 7), ('red', 5), ('self', 8)])
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# Make sure that direct calls to update do not clear previous contents
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# add that updates items are not moved to the end
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d = OrderedDict([('a', 1), ('b', 2), ('c', 3), ('d', 44), ('e', 55)])
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d.update([('e', 5), ('f', 6)], g=7, d=4)
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self.assertEqual(list(d.items()),
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[('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5), ('f', 6), ('g', 7)])
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self.assertRaises(TypeError, OrderedDict().update, 42)
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self.assertRaises(TypeError, OrderedDict().update, (), ())
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self.assertRaises(TypeError, OrderedDict.update)
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def test_abc(self):
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self.assertIsInstance(OrderedDict(), MutableMapping)
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self.assertTrue(issubclass(OrderedDict, MutableMapping))
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def test_clear(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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shuffle(pairs)
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od = OrderedDict(pairs)
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self.assertEqual(len(od), len(pairs))
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od.clear()
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self.assertEqual(len(od), 0)
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def test_delitem(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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od = OrderedDict(pairs)
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del od['a']
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self.assertNotIn('a', od)
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with self.assertRaises(KeyError):
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del od['a']
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self.assertEqual(list(od.items()), pairs[:2] + pairs[3:])
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def test_setitem(self):
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od = OrderedDict([('d', 1), ('b', 2), ('c', 3), ('a', 4), ('e', 5)])
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od['c'] = 10 # existing element
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od['f'] = 20 # new element
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self.assertEqual(list(od.items()),
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[('d', 1), ('b', 2), ('c', 10), ('a', 4), ('e', 5), ('f', 20)])
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def test_iterators(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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shuffle(pairs)
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od = OrderedDict(pairs)
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self.assertEqual(list(od), [t[0] for t in pairs])
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self.assertEqual(od.keys()[:], [t[0] for t in pairs])
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self.assertEqual(od.values()[:], [t[1] for t in pairs])
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self.assertEqual(od.items()[:], pairs)
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self.assertEqual(list(od.iterkeys()), [t[0] for t in pairs])
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self.assertEqual(list(od.itervalues()), [t[1] for t in pairs])
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self.assertEqual(list(od.iteritems()), pairs)
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self.assertEqual(list(reversed(od)),
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[t[0] for t in reversed(pairs)])
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def test_popitem(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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shuffle(pairs)
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od = OrderedDict(pairs)
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while pairs:
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self.assertEqual(od.popitem(), pairs.pop())
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with self.assertRaises(KeyError):
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od.popitem()
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self.assertEqual(len(od), 0)
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def test_pop(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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shuffle(pairs)
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od = OrderedDict(pairs)
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shuffle(pairs)
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while pairs:
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k, v = pairs.pop()
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self.assertEqual(od.pop(k), v)
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with self.assertRaises(KeyError):
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od.pop('xyz')
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self.assertEqual(len(od), 0)
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self.assertEqual(od.pop(k, 12345), 12345)
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# make sure pop still works when __missing__ is defined
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class Missing(OrderedDict):
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def __missing__(self, key):
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return 0
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m = Missing(a=1)
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self.assertEqual(m.pop('b', 5), 5)
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self.assertEqual(m.pop('a', 6), 1)
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self.assertEqual(m.pop('a', 6), 6)
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with self.assertRaises(KeyError):
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m.pop('a')
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def test_equality(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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shuffle(pairs)
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od1 = OrderedDict(pairs)
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od2 = OrderedDict(pairs)
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self.assertEqual(od1, od2) # same order implies equality
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pairs = pairs[2:] + pairs[:2]
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od2 = OrderedDict(pairs)
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self.assertNotEqual(od1, od2) # different order implies inequality
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# comparison to regular dict is not order sensitive
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self.assertEqual(od1, dict(od2))
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self.assertEqual(dict(od2), od1)
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# different length implied inequality
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self.assertNotEqual(od1, OrderedDict(pairs[:-1]))
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def test_copying(self):
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# Check that ordered dicts are copyable, deepcopyable, picklable,
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# and have a repr/eval round-trip
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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od = OrderedDict(pairs)
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update_test = OrderedDict()
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update_test.update(od)
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for i, dup in enumerate([
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od.copy(),
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copy.copy(od),
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copy.deepcopy(od),
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pickle.loads(pickle.dumps(od, 0)),
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pickle.loads(pickle.dumps(od, 1)),
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pickle.loads(pickle.dumps(od, 2)),
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pickle.loads(pickle.dumps(od, -1)),
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eval(repr(od)),
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update_test,
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OrderedDict(od),
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]):
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self.assertTrue(dup is not od)
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self.assertEqual(dup, od)
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self.assertEqual(list(dup.items()), list(od.items()))
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self.assertEqual(len(dup), len(od))
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self.assertEqual(type(dup), type(od))
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def test_yaml_linkage(self):
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# Verify that __reduce__ is setup in a way that supports PyYAML's dump() feature.
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# In yaml, lists are native but tuples are not.
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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od = OrderedDict(pairs)
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# yaml.dump(od) -->
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# '!!python/object/apply:__main__.OrderedDict\n- - [a, 1]\n - [b, 2]\n'
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self.assertTrue(all(type(pair)==list for pair in od.__reduce__()[1]))
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def test_reduce_not_too_fat(self):
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# do not save instance dictionary if not needed
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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od = OrderedDict(pairs)
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self.assertEqual(len(od.__reduce__()), 2)
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od.x = 10
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self.assertEqual(len(od.__reduce__()), 3)
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def test_repr(self):
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od = OrderedDict([('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)])
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self.assertEqual(repr(od),
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"OrderedDict([('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)])")
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self.assertEqual(eval(repr(od)), od)
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self.assertEqual(repr(OrderedDict()), "OrderedDict()")
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def test_repr_recursive(self):
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# See issue #9826
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od = OrderedDict.fromkeys('abc')
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od['x'] = od
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self.assertEqual(repr(od),
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"OrderedDict([('a', None), ('b', None), ('c', None), ('x', ...)])")
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def test_setdefault(self):
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pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
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shuffle(pairs)
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od = OrderedDict(pairs)
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pair_order = list(od.items())
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self.assertEqual(od.setdefault('a', 10), 3)
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# make sure order didn't change
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self.assertEqual(list(od.items()), pair_order)
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self.assertEqual(od.setdefault('x', 10), 10)
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# make sure 'x' is added to the end
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self.assertEqual(list(od.items())[-1], ('x', 10))
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# make sure setdefault still works when __missing__ is defined
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class Missing(OrderedDict):
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def __missing__(self, key):
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return 0
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self.assertEqual(Missing().setdefault(5, 9), 9)
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def test_reinsert(self):
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# Given insert a, insert b, delete a, re-insert a,
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# verify that a is now later than b.
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od = OrderedDict()
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od['a'] = 1
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od['b'] = 2
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del od['a']
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od['a'] = 1
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self.assertEqual(list(od.items()), [('b', 2), ('a', 1)])
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def test_views(self):
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s = 'the quick brown fox jumped over a lazy dog yesterday before dawn'.split()
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od = OrderedDict.fromkeys(s)
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self.assertEqual(list(od.viewkeys()), s)
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self.assertEqual(list(od.viewvalues()), [None for k in s])
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self.assertEqual(list(od.viewitems()), [(k, None) for k in s])
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# See http://bugs.python.org/issue24286
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self.assertEqual(od.viewkeys(), dict(od).viewkeys())
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self.assertEqual(od.viewitems(), dict(od).viewitems())
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def test_override_update(self):
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# Verify that subclasses can override update() without breaking __init__()
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class MyOD(OrderedDict):
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def update(self, *args, **kwds):
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raise Exception()
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items = [('a', 1), ('c', 3), ('b', 2)]
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self.assertEqual(list(MyOD(items).items()), items)
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def test_free_after_iterating(self):
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test_support.check_free_after_iterating(self, iter, OrderedDict)
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test_support.check_free_after_iterating(self, lambda d: d.iterkeys(), OrderedDict)
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test_support.check_free_after_iterating(self, lambda d: d.itervalues(), OrderedDict)
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test_support.check_free_after_iterating(self, lambda d: d.iteritems(), OrderedDict)
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test_support.check_free_after_iterating(self, lambda d: iter(d.viewkeys()), OrderedDict)
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test_support.check_free_after_iterating(self, lambda d: iter(d.viewvalues()), OrderedDict)
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test_support.check_free_after_iterating(self, lambda d: iter(d.viewitems()), OrderedDict)
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class GeneralMappingTests(mapping_tests.BasicTestMappingProtocol):
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type2test = OrderedDict
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def test_popitem(self):
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d = self._empty_mapping()
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self.assertRaises(KeyError, d.popitem)
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class MyOrderedDict(OrderedDict):
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pass
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class SubclassMappingTests(mapping_tests.BasicTestMappingProtocol):
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type2test = MyOrderedDict
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def test_popitem(self):
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d = self._empty_mapping()
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self.assertRaises(KeyError, d.popitem)
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def test_main(verbose=None):
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test_classes = [TestOrderedDict, GeneralMappingTests, SubclassMappingTests]
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test_support.run_unittest(*test_classes)
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if __name__ == "__main__":
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test_main(verbose=True)
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