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322 lines
11 KiB
Python
322 lines
11 KiB
Python
"""
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Tests for stuff in django.utils.datastructures.
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"""
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import copy
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import pickle
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import warnings
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from django.test import SimpleTestCase
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from django.utils.datastructures import (DictWrapper, ImmutableList,
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MultiValueDict, MultiValueDictKeyError, MergeDict, SortedDict)
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from django.utils import six
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class SortedDictTests(SimpleTestCase):
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def setUp(self):
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self.d1 = SortedDict()
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self.d1[7] = 'seven'
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self.d1[1] = 'one'
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self.d1[9] = 'nine'
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self.d2 = SortedDict()
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self.d2[1] = 'one'
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self.d2[9] = 'nine'
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self.d2[0] = 'nil'
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self.d2[7] = 'seven'
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def test_basic_methods(self):
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self.assertEqual(list(six.iterkeys(self.d1)), [7, 1, 9])
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self.assertEqual(list(six.itervalues(self.d1)), ['seven', 'one', 'nine'])
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self.assertEqual(list(six.iteritems(self.d1)), [(7, 'seven'), (1, 'one'), (9, 'nine')])
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def test_overwrite_ordering(self):
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""" Overwriting an item keeps its place. """
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self.d1[1] = 'ONE'
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self.assertEqual(list(six.itervalues(self.d1)), ['seven', 'ONE', 'nine'])
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def test_append_items(self):
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""" New items go to the end. """
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self.d1[0] = 'nil'
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self.assertEqual(list(six.iterkeys(self.d1)), [7, 1, 9, 0])
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def test_delete_and_insert(self):
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"""
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Deleting an item, then inserting the same key again will place it
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at the end.
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"""
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del self.d2[7]
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self.assertEqual(list(six.iterkeys(self.d2)), [1, 9, 0])
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self.d2[7] = 'lucky number 7'
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self.assertEqual(list(six.iterkeys(self.d2)), [1, 9, 0, 7])
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if not six.PY3:
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def test_change_keys(self):
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"""
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Changing the keys won't do anything, it's only a copy of the
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keys dict.
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This test doesn't make sense under Python 3 because keys is
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an iterator.
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"""
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k = self.d2.keys()
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k.remove(9)
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self.assertEqual(self.d2.keys(), [1, 9, 0, 7])
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def test_init_keys(self):
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"""
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Initialising a SortedDict with two keys will just take the first one.
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A real dict will actually take the second value so we will too, but
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we'll keep the ordering from the first key found.
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"""
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tuples = ((2, 'two'), (1, 'one'), (2, 'second-two'))
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d = SortedDict(tuples)
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self.assertEqual(list(six.iterkeys(d)), [2, 1])
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real_dict = dict(tuples)
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self.assertEqual(sorted(six.itervalues(real_dict)), ['one', 'second-two'])
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# Here the order of SortedDict values *is* what we are testing
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self.assertEqual(list(six.itervalues(d)), ['second-two', 'one'])
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def test_overwrite(self):
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self.d1[1] = 'not one'
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self.assertEqual(self.d1[1], 'not one')
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self.assertEqual(list(six.iterkeys(self.d1)), list(six.iterkeys(self.d1.copy())))
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def test_append(self):
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self.d1[13] = 'thirteen'
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self.assertEqual(
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repr(self.d1),
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"{7: 'seven', 1: 'one', 9: 'nine', 13: 'thirteen'}"
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)
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def test_pop(self):
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self.assertEqual(self.d1.pop(1, 'missing'), 'one')
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self.assertEqual(self.d1.pop(1, 'missing'), 'missing')
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# We don't know which item will be popped in popitem(), so we'll
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# just check that the number of keys has decreased.
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l = len(self.d1)
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self.d1.popitem()
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self.assertEqual(l - len(self.d1), 1)
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def test_dict_equality(self):
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d = SortedDict((i, i) for i in range(3))
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self.assertEqual(d, {0: 0, 1: 1, 2: 2})
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def test_tuple_init(self):
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d = SortedDict(((1, "one"), (0, "zero"), (2, "two")))
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self.assertEqual(repr(d), "{1: 'one', 0: 'zero', 2: 'two'}")
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def test_pickle(self):
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self.assertEqual(
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pickle.loads(pickle.dumps(self.d1, 2)),
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{7: 'seven', 1: 'one', 9: 'nine'}
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)
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def test_copy(self):
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orig = SortedDict(((1, "one"), (0, "zero"), (2, "two")))
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copied = copy.copy(orig)
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self.assertEqual(list(six.iterkeys(orig)), [1, 0, 2])
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self.assertEqual(list(six.iterkeys(copied)), [1, 0, 2])
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def test_clear(self):
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self.d1.clear()
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self.assertEqual(self.d1, {})
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self.assertEqual(self.d1.keyOrder, [])
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def test_reversed(self):
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self.assertEqual(list(self.d1), [7, 1, 9])
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self.assertEqual(list(self.d2), [1, 9, 0, 7])
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self.assertEqual(list(reversed(self.d1)), [9, 1, 7])
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self.assertEqual(list(reversed(self.d2)), [7, 0, 9, 1])
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def test_insert(self):
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d = SortedDict()
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter("always")
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d.insert(0, "hello", "world")
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assert w[0].category is DeprecationWarning
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def test_value_for_index(self):
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d = SortedDict({"a": 3})
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter("always")
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self.assertEqual(d.value_for_index(0), 3)
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assert w[0].category is DeprecationWarning
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class MergeDictTests(SimpleTestCase):
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def test_simple_mergedict(self):
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d1 = {'chris':'cool', 'camri':'cute', 'cotton':'adorable',
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'tulip':'snuggable', 'twoofme':'firstone'}
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d2 = {'chris2':'cool2', 'camri2':'cute2', 'cotton2':'adorable2',
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'tulip2':'snuggable2'}
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d3 = {'chris3':'cool3', 'camri3':'cute3', 'cotton3':'adorable3',
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'tulip3':'snuggable3'}
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d4 = {'twoofme': 'secondone'}
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md = MergeDict(d1, d2, d3)
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self.assertEqual(md['chris'], 'cool')
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self.assertEqual(md['camri'], 'cute')
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self.assertEqual(md['twoofme'], 'firstone')
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md2 = md.copy()
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self.assertEqual(md2['chris'], 'cool')
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def test_mergedict_merges_multivaluedict(self):
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""" MergeDict can merge MultiValueDicts """
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multi1 = MultiValueDict({'key1': ['value1'],
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'key2': ['value2', 'value3']})
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multi2 = MultiValueDict({'key2': ['value4'],
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'key4': ['value5', 'value6']})
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mm = MergeDict(multi1, multi2)
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# Although 'key2' appears in both dictionaries,
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# only the first value is used.
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self.assertEqual(mm.getlist('key2'), ['value2', 'value3'])
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self.assertEqual(mm.getlist('key4'), ['value5', 'value6'])
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self.assertEqual(mm.getlist('undefined'), [])
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self.assertEqual(sorted(six.iterkeys(mm)), ['key1', 'key2', 'key4'])
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self.assertEqual(len(list(six.itervalues(mm))), 3)
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self.assertTrue('value1' in six.itervalues(mm))
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self.assertEqual(sorted(six.iteritems(mm), key=lambda k: k[0]),
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[('key1', 'value1'), ('key2', 'value3'),
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('key4', 'value6')])
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self.assertEqual([(k,mm.getlist(k)) for k in sorted(mm)],
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[('key1', ['value1']),
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('key2', ['value2', 'value3']),
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('key4', ['value5', 'value6'])])
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def test_bool_casting(self):
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empty = MergeDict({}, {}, {})
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not_empty = MergeDict({}, {}, {"key": "value"})
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self.assertFalse(empty)
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self.assertTrue(not_empty)
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def test_key_error(self):
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"""
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Test that the message of KeyError contains the missing key name.
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"""
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d1 = MergeDict({'key1': 42})
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with six.assertRaisesRegex(self, KeyError, 'key2'):
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d1['key2']
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class MultiValueDictTests(SimpleTestCase):
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def test_multivaluedict(self):
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d = MultiValueDict({'name': ['Adrian', 'Simon'],
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'position': ['Developer']})
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self.assertEqual(d['name'], 'Simon')
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self.assertEqual(d.get('name'), 'Simon')
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self.assertEqual(d.getlist('name'), ['Adrian', 'Simon'])
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self.assertEqual(sorted(list(six.iteritems(d))),
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[('name', 'Simon'), ('position', 'Developer')])
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self.assertEqual(sorted(list(six.iterlists(d))),
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[('name', ['Adrian', 'Simon']),
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('position', ['Developer'])])
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# MultiValueDictKeyError: "Key 'lastname' not found in
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# <MultiValueDict: {'position': ['Developer'],
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# 'name': ['Adrian', 'Simon']}>"
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six.assertRaisesRegex(self, MultiValueDictKeyError,
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r'"Key \'lastname\' not found in <MultiValueDict',
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d.__getitem__, 'lastname')
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self.assertEqual(d.get('lastname'), None)
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self.assertEqual(d.get('lastname', 'nonexistent'), 'nonexistent')
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self.assertEqual(d.getlist('lastname'), [])
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self.assertEqual(d.getlist('doesnotexist', ['Adrian', 'Simon']),
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['Adrian', 'Simon'])
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d.setlist('lastname', ['Holovaty', 'Willison'])
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self.assertEqual(d.getlist('lastname'), ['Holovaty', 'Willison'])
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self.assertEqual(sorted(list(six.itervalues(d))),
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['Developer', 'Simon', 'Willison'])
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def test_appendlist(self):
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d = MultiValueDict()
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d.appendlist('name', 'Adrian')
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d.appendlist('name', 'Simon')
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self.assertEqual(d.getlist('name'), ['Adrian', 'Simon'])
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def test_copy(self):
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for copy_func in [copy.copy, lambda d: d.copy()]:
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d1 = MultiValueDict({
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"developers": ["Carl", "Fred"]
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})
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self.assertEqual(d1["developers"], "Fred")
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d2 = copy_func(d1)
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d2.update({"developers": "Groucho"})
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self.assertEqual(d2["developers"], "Groucho")
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self.assertEqual(d1["developers"], "Fred")
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d1 = MultiValueDict({
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"key": [[]]
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})
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self.assertEqual(d1["key"], [])
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d2 = copy_func(d1)
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d2["key"].append("Penguin")
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self.assertEqual(d1["key"], ["Penguin"])
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self.assertEqual(d2["key"], ["Penguin"])
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def test_dict_translation(self):
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mvd = MultiValueDict({
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'devs': ['Bob', 'Joe'],
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'pm': ['Rory'],
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})
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d = mvd.dict()
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self.assertEqual(list(six.iterkeys(d)), list(six.iterkeys(mvd)))
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for key in six.iterkeys(mvd):
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self.assertEqual(d[key], mvd[key])
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self.assertEqual({}, MultiValueDict().dict())
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class ImmutableListTests(SimpleTestCase):
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def test_sort(self):
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d = ImmutableList(range(10))
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# AttributeError: ImmutableList object is immutable.
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self.assertRaisesMessage(AttributeError,
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'ImmutableList object is immutable.', d.sort)
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self.assertEqual(repr(d), '(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)')
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def test_custom_warning(self):
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d = ImmutableList(range(10), warning="Object is immutable!")
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self.assertEqual(d[1], 1)
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# AttributeError: Object is immutable!
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self.assertRaisesMessage(AttributeError,
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'Object is immutable!', d.__setitem__, 1, 'test')
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class DictWrapperTests(SimpleTestCase):
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def test_dictwrapper(self):
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f = lambda x: "*%s" % x
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d = DictWrapper({'a': 'a'}, f, 'xx_')
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self.assertEqual("Normal: %(a)s. Modified: %(xx_a)s" % d,
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'Normal: a. Modified: *a')
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