mirror of
https://github.com/django/django.git
synced 2024-12-27 11:35:53 +00:00
184ea1c91f
git-svn-id: http://code.djangoproject.com/svn/django/trunk@10241 bcc190cf-cafb-0310-a4f2-bffc1f526a37
160 lines
4.3 KiB
Python
160 lines
4.3 KiB
Python
"""
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# Tests for stuff in django.utils.datastructures.
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>>> import pickle
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>>> from django.utils.datastructures import *
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### MergeDict #################################################################
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>>> d1 = {'chris':'cool','camri':'cute','cotton':'adorable','tulip':'snuggable', 'twoofme':'firstone'}
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>>> d2 = {'chris2':'cool2','camri2':'cute2','cotton2':'adorable2','tulip2':'snuggable2'}
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>>> d3 = {'chris3':'cool3','camri3':'cute3','cotton3':'adorable3','tulip3':'snuggable3'}
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>>> d4 = {'twoofme':'secondone'}
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>>> md = MergeDict( d1,d2,d3 )
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>>> md['chris']
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'cool'
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>>> md['camri']
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'cute'
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>>> md['twoofme']
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'firstone'
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>>> md2 = md.copy()
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>>> md2['chris']
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'cool'
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MergeDict can merge MultiValueDicts
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>>> multi1 = MultiValueDict({'key1': ['value1'], 'key2': ['value2', 'value3']})
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>>> multi2 = MultiValueDict({'key2': ['value4'], 'key4': ['value5', 'value6']})
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>>> mm = MergeDict(multi1, multi2)
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# Although 'key2' appears in both dictionaries, only the first value is used.
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>>> mm.getlist('key2')
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['value2', 'value3']
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>>> mm.getlist('key4')
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['value5', 'value6']
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>>> mm.getlist('undefined')
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[]
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### MultiValueDict ##########################################################
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>>> d = MultiValueDict({'name': ['Adrian', 'Simon'], 'position': ['Developer']})
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>>> d['name']
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'Simon'
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>>> d.get('name')
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'Simon'
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>>> d.getlist('name')
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['Adrian', 'Simon']
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>>> list(d.iteritems())
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[('position', 'Developer'), ('name', 'Simon')]
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>>> list(d.iterlists())
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[('position', ['Developer']), ('name', ['Adrian', 'Simon'])]
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>>> d['lastname']
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Traceback (most recent call last):
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...
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MultiValueDictKeyError: "Key 'lastname' not found in <MultiValueDict: {'position': ['Developer'], 'name': ['Adrian', 'Simon']}>"
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>>> d.get('lastname')
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>>> d.get('lastname', 'nonexistent')
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'nonexistent'
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>>> d.getlist('lastname')
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[]
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>>> d.setlist('lastname', ['Holovaty', 'Willison'])
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>>> d.getlist('lastname')
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['Holovaty', 'Willison']
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>>> d.values()
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['Developer', 'Simon', 'Willison']
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>>> list(d.itervalues())
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['Developer', 'Simon', 'Willison']
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### SortedDict #################################################################
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>>> d = SortedDict()
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>>> d['one'] = 'one'
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>>> d['two'] = 'two'
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>>> d['three'] = 'three'
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>>> d['one']
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'one'
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>>> d['two']
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'two'
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>>> d['three']
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'three'
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>>> d.keys()
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['one', 'two', 'three']
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>>> d.values()
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['one', 'two', 'three']
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>>> d['one'] = 'not one'
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>>> d['one']
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'not one'
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>>> d.keys() == d.copy().keys()
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True
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>>> d2 = d.copy()
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>>> d2['four'] = 'four'
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>>> print repr(d)
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{'one': 'not one', 'two': 'two', 'three': 'three'}
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>>> d.pop('one', 'missing')
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'not one'
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>>> d.pop('one', 'missing')
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'missing'
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We don't know which item will be popped in popitem(), so we'll just check that
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the number of keys has decreased.
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>>> l = len(d)
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>>> _ = d.popitem()
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>>> l - len(d)
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1
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Init from sequence of tuples
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>>> d = SortedDict((
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... (1, "one"),
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... (0, "zero"),
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... (2, "two")))
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>>> print repr(d)
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{1: 'one', 0: 'zero', 2: 'two'}
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>>> pickle.loads(pickle.dumps(d, 2))
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{1: 'one', 0: 'zero', 2: 'two'}
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>>> d.clear()
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>>> d
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{}
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>>> d.keyOrder
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[]
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### DotExpandedDict ##########################################################
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>>> d = DotExpandedDict({'person.1.firstname': ['Simon'], 'person.1.lastname': ['Willison'], 'person.2.firstname': ['Adrian'], 'person.2.lastname': ['Holovaty']})
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>>> d['person']['1']['lastname']
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['Willison']
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>>> d['person']['2']['lastname']
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['Holovaty']
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>>> d['person']['2']['firstname']
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['Adrian']
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### ImmutableList ############################################################
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>>> d = ImmutableList(range(10))
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>>> d.sort()
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Traceback (most recent call last):
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File "<stdin>", line 1, in <module>
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File "/var/lib/python-support/python2.5/django/utils/datastructures.py", line 359, in complain
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raise AttributeError, self.warning
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AttributeError: ImmutableList object is immutable.
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>>> repr(d)
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'(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)'
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>>> d = ImmutableList(range(10), warning="Object is immutable!")
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>>> d[1]
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1
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>>> d[1] = 'test'
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Traceback (most recent call last):
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File "<stdin>", line 1, in <module>
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File "/var/lib/python-support/python2.5/django/utils/datastructures.py", line 359, in complain
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raise AttributeError, self.warning
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AttributeError: Object is immutable!
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### DictWrapper #############################################################
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>>> f = lambda x: "*%s" % x
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>>> d = DictWrapper({'a': 'a'}, f, 'xx_')
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>>> "Normal: %(a)s. Modified: %(xx_a)s" % d
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'Normal: a. Modified: *a'
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"""
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