Source code for sas.data_util.ordereddicttest

#!/usr/bin/env python

from random import shuffle
import copy
import inspect
import pickle
import unittest


from ordereddict import OrderedDict


[docs]class TestOrderedDict(unittest.TestCase):
[docs] def test_init(self): self.assertRaises(TypeError, OrderedDict, ([('a', 1), ('b', 2)], None)) # too many args 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__'])[0], ['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)])
[docs] def test_update(self): self.assertRaises(TypeError, OrderedDict().update, [('a', 1), ('b', 2)], None) # too many args 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)])
[docs] 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)
[docs] def test_delitem(self): pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)] od = OrderedDict(pairs) del od['a'] self.assert_('a' not in od) self.assertRaises(KeyError, od.__delitem__, 'a') self.assertEqual(list(od.items()), pairs[:2] + pairs[3:])
[docs] 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)])
[docs] 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(list(od.keys()), [t[0] for t in pairs]) self.assertEqual(list(od.values()), [t[1] for t in pairs]) self.assertEqual(list(od.items()), pairs) self.assertEqual(list(reversed(od)), [t[0] for t in reversed(pairs)])
[docs] 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()) self.assertRaises(KeyError, od.popitem) self.assertEqual(len(od), 0)
[docs] 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) self.assertRaises(KeyError, od.pop, 'xyz') self.assertEqual(len(od), 0) self.assertEqual(od.pop(k, 12345), 12345)
[docs] def test_equality(self): pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)] shuffle(pairs) od1 = OrderedDict(pairs) od2 = OrderedDict(pairs) self.assertEqual(od1, od2) # same order implies equality pairs = pairs[2:] + pairs[:2] od2 = OrderedDict(pairs) self.assertNotEqual(od1, od2) # different order implies inequality # comparison to regular dict is not order sensitive self.assertEqual(od1, dict(od2)) self.assertEqual(dict(od2), od1) # different length implied inequality self.assertNotEqual(od1, OrderedDict(pairs[:-1]))
[docs] 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.assert_(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))
[docs] def test_repr(self): od = OrderedDict([('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]) self.assertEqual(repr(od), "OrderedDict([('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)])") self.assertEqual(eval(repr(od)), od) self.assertEqual(repr(OrderedDict()), "OrderedDict()")
[docs] 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))
[docs] 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)])
if __name__ == "__main__": unittest.main()