--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/utils/datastructures.py Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,256 @@
+"""
+Tests for stuff in django.utils.datastructures.
+"""
+import pickle
+import unittest
+
+from django.utils.datastructures import *
+
+
+class DatastructuresTestCase(unittest.TestCase):
+ def assertRaisesErrorWithMessage(self, error, message, callable,
+ *args, **kwargs):
+ self.assertRaises(error, callable, *args, **kwargs)
+ try:
+ callable(*args, **kwargs)
+ except error, e:
+ self.assertEqual(message, str(e))
+
+
+class SortedDictTests(DatastructuresTestCase):
+ def setUp(self):
+ self.d1 = SortedDict()
+ self.d1[7] = 'seven'
+ self.d1[1] = 'one'
+ self.d1[9] = 'nine'
+
+ self.d2 = SortedDict()
+ self.d2[1] = 'one'
+ self.d2[9] = 'nine'
+ self.d2[0] = 'nil'
+ self.d2[7] = 'seven'
+
+ def test_basic_methods(self):
+ self.assertEquals(self.d1.keys(), [7, 1, 9])
+ self.assertEquals(self.d1.values(), ['seven', 'one', 'nine'])
+ self.assertEquals(self.d1.items(), [(7, 'seven'), (1, 'one'), (9, 'nine')])
+
+ def test_overwrite_ordering(self):
+ """ Overwriting an item keeps it's place. """
+ self.d1[1] = 'ONE'
+ self.assertEquals(self.d1.values(), ['seven', 'ONE', 'nine'])
+
+ def test_append_items(self):
+ """ New items go to the end. """
+ self.d1[0] = 'nil'
+ self.assertEquals(self.d1.keys(), [7, 1, 9, 0])
+
+ def test_delete_and_insert(self):
+ """
+ Deleting an item, then inserting the same key again will place it
+ at the end.
+ """
+ del self.d2[7]
+ self.assertEquals(self.d2.keys(), [1, 9, 0])
+ self.d2[7] = 'lucky number 7'
+ self.assertEquals(self.d2.keys(), [1, 9, 0, 7])
+
+ def test_change_keys(self):
+ """
+ Changing the keys won't do anything, it's only a copy of the
+ keys dict.
+ """
+ k = self.d2.keys()
+ k.remove(9)
+ self.assertEquals(self.d2.keys(), [1, 9, 0, 7])
+
+ def test_init_keys(self):
+ """
+ Initialising a SortedDict with two keys will just take the first one.
+
+ A real dict will actually take the second value so we will too, but
+ we'll keep the ordering from the first key found.
+ """
+ tuples = ((2, 'two'), (1, 'one'), (2, 'second-two'))
+ d = SortedDict(tuples)
+
+ self.assertEquals(d.keys(), [2, 1])
+
+ real_dict = dict(tuples)
+ self.assertEquals(sorted(real_dict.values()), ['one', 'second-two'])
+
+ # Here the order of SortedDict values *is* what we are testing
+ self.assertEquals(d.values(), ['second-two', 'one'])
+
+ def test_overwrite(self):
+ self.d1[1] = 'not one'
+ self.assertEqual(self.d1[1], 'not one')
+ self.assertEqual(self.d1.keys(), self.d1.copy().keys())
+
+ def test_append(self):
+ self.d1[13] = 'thirteen'
+ self.assertEquals(
+ repr(self.d1),
+ "{7: 'seven', 1: 'one', 9: 'nine', 13: 'thirteen'}"
+ )
+
+ def test_pop(self):
+ self.assertEquals(self.d1.pop(1, 'missing'), 'one')
+ self.assertEquals(self.d1.pop(1, 'missing'), 'missing')
+
+ # We don't know which item will be popped in popitem(), so we'll
+ # just check that the number of keys has decreased.
+ l = len(self.d1)
+ self.d1.popitem()
+ self.assertEquals(l - len(self.d1), 1)
+
+ def test_dict_equality(self):
+ d = SortedDict((i, i) for i in xrange(3))
+ self.assertEquals(d, {0: 0, 1: 1, 2: 2})
+
+ def test_tuple_init(self):
+ d = SortedDict(((1, "one"), (0, "zero"), (2, "two")))
+ self.assertEquals(repr(d), "{1: 'one', 0: 'zero', 2: 'two'}")
+
+ def test_pickle(self):
+ self.assertEquals(
+ pickle.loads(pickle.dumps(self.d1, 2)),
+ {7: 'seven', 1: 'one', 9: 'nine'}
+ )
+
+ def test_clear(self):
+ self.d1.clear()
+ self.assertEquals(self.d1, {})
+ self.assertEquals(self.d1.keyOrder, [])
+
+class MergeDictTests(DatastructuresTestCase):
+
+ def test_simple_mergedict(self):
+ d1 = {'chris':'cool', 'camri':'cute', 'cotton':'adorable',
+ 'tulip':'snuggable', 'twoofme':'firstone'}
+
+ d2 = {'chris2':'cool2', 'camri2':'cute2', 'cotton2':'adorable2',
+ 'tulip2':'snuggable2'}
+
+ d3 = {'chris3':'cool3', 'camri3':'cute3', 'cotton3':'adorable3',
+ 'tulip3':'snuggable3'}
+
+ d4 = {'twoofme': 'secondone'}
+
+ md = MergeDict(d1, d2, d3)
+
+ self.assertEquals(md['chris'], 'cool')
+ self.assertEquals(md['camri'], 'cute')
+ self.assertEquals(md['twoofme'], 'firstone')
+
+ md2 = md.copy()
+ self.assertEquals(md2['chris'], 'cool')
+
+ def test_mergedict_merges_multivaluedict(self):
+ """ MergeDict can merge MultiValueDicts """
+
+ multi1 = MultiValueDict({'key1': ['value1'],
+ 'key2': ['value2', 'value3']})
+
+ multi2 = MultiValueDict({'key2': ['value4'],
+ 'key4': ['value5', 'value6']})
+
+ mm = MergeDict(multi1, multi2)
+
+ # Although 'key2' appears in both dictionaries,
+ # only the first value is used.
+ self.assertEquals(mm.getlist('key2'), ['value2', 'value3'])
+ self.assertEquals(mm.getlist('key4'), ['value5', 'value6'])
+ self.assertEquals(mm.getlist('undefined'), [])
+
+ self.assertEquals(sorted(mm.keys()), ['key1', 'key2', 'key4'])
+ self.assertEquals(len(mm.values()), 3)
+
+ self.assertTrue('value1' in mm.values())
+
+ self.assertEquals(sorted(mm.items(), key=lambda k: k[0]),
+ [('key1', 'value1'), ('key2', 'value3'),
+ ('key4', 'value6')])
+
+ self.assertEquals([(k,mm.getlist(k)) for k in sorted(mm)],
+ [('key1', ['value1']),
+ ('key2', ['value2', 'value3']),
+ ('key4', ['value5', 'value6'])])
+
+class MultiValueDictTests(DatastructuresTestCase):
+
+ def test_multivaluedict(self):
+ d = MultiValueDict({'name': ['Adrian', 'Simon'],
+ 'position': ['Developer']})
+
+ self.assertEquals(d['name'], 'Simon')
+ self.assertEquals(d.get('name'), 'Simon')
+ self.assertEquals(d.getlist('name'), ['Adrian', 'Simon'])
+ self.assertEquals(list(d.iteritems()),
+ [('position', 'Developer'), ('name', 'Simon')])
+
+ self.assertEquals(list(d.iterlists()),
+ [('position', ['Developer']),
+ ('name', ['Adrian', 'Simon'])])
+
+ # MultiValueDictKeyError: "Key 'lastname' not found in
+ # <MultiValueDict: {'position': ['Developer'],
+ # 'name': ['Adrian', 'Simon']}>"
+ self.assertRaisesErrorWithMessage(MultiValueDictKeyError,
+ '"Key \'lastname\' not found in <MultiValueDict: {\'position\':'\
+ ' [\'Developer\'], \'name\': [\'Adrian\', \'Simon\']}>"',
+ d.__getitem__, 'lastname')
+
+ self.assertEquals(d.get('lastname'), None)
+ self.assertEquals(d.get('lastname', 'nonexistent'), 'nonexistent')
+ self.assertEquals(d.getlist('lastname'), [])
+
+ d.setlist('lastname', ['Holovaty', 'Willison'])
+ self.assertEquals(d.getlist('lastname'), ['Holovaty', 'Willison'])
+ self.assertEquals(d.values(), ['Developer', 'Simon', 'Willison'])
+ self.assertEquals(list(d.itervalues()),
+ ['Developer', 'Simon', 'Willison'])
+
+
+class DotExpandedDictTests(DatastructuresTestCase):
+
+ def test_dotexpandeddict(self):
+
+ d = DotExpandedDict({'person.1.firstname': ['Simon'],
+ 'person.1.lastname': ['Willison'],
+ 'person.2.firstname': ['Adrian'],
+ 'person.2.lastname': ['Holovaty']})
+
+ self.assertEquals(d['person']['1']['lastname'], ['Willison'])
+ self.assertEquals(d['person']['2']['lastname'], ['Holovaty'])
+ self.assertEquals(d['person']['2']['firstname'], ['Adrian'])
+
+
+class ImmutableListTests(DatastructuresTestCase):
+
+ def test_sort(self):
+ d = ImmutableList(range(10))
+
+ # AttributeError: ImmutableList object is immutable.
+ self.assertRaisesErrorWithMessage(AttributeError,
+ 'ImmutableList object is immutable.', d.sort)
+
+ self.assertEquals(repr(d), '(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)')
+
+ def test_custom_warning(self):
+ d = ImmutableList(range(10), warning="Object is immutable!")
+
+ self.assertEquals(d[1], 1)
+
+ # AttributeError: Object is immutable!
+ self.assertRaisesErrorWithMessage(AttributeError,
+ 'Object is immutable!', d.__setitem__, 1, 'test')
+
+
+class DictWrapperTests(DatastructuresTestCase):
+
+ def test_dictwrapper(self):
+ f = lambda x: "*%s" % x
+ d = DictWrapper({'a': 'a'}, f, 'xx_')
+ self.assertEquals("Normal: %(a)s. Modified: %(xx_a)s" % d,
+ 'Normal: a. Modified: *a')