django/tests/utils_tests/test_datastructures.py

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"""
Tests for stuff in django.utils.datastructures.
"""
import copy
from django.test import SimpleTestCase
from django.utils import six
from django.utils.datastructures import (
DictWrapper, ImmutableList, MultiValueDict, MultiValueDictKeyError,
OrderedSet,
)
class OrderedSetTests(SimpleTestCase):
def test_bool(self):
# Refs #23664
s = OrderedSet()
self.assertFalse(s)
s.add(1)
self.assertTrue(s)
class MultiValueDictTests(SimpleTestCase):
def test_multivaluedict(self):
d = MultiValueDict({'name': ['Adrian', 'Simon'],
'position': ['Developer']})
self.assertEqual(d['name'], 'Simon')
self.assertEqual(d.get('name'), 'Simon')
self.assertEqual(d.getlist('name'), ['Adrian', 'Simon'])
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self.assertEqual(
sorted(list(six.iteritems(d))),
[('name', 'Simon'), ('position', 'Developer')]
)
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self.assertEqual(
sorted(list(six.iterlists(d))),
[('name', ['Adrian', 'Simon']), ('position', ['Developer'])]
)
six.assertRaisesRegex(self, MultiValueDictKeyError, 'lastname',
d.__getitem__, 'lastname')
self.assertEqual(d.get('lastname'), None)
self.assertEqual(d.get('lastname', 'nonexistent'), 'nonexistent')
self.assertEqual(d.getlist('lastname'), [])
self.assertEqual(d.getlist('doesnotexist', ['Adrian', 'Simon']),
['Adrian', 'Simon'])
d.setlist('lastname', ['Holovaty', 'Willison'])
self.assertEqual(d.getlist('lastname'), ['Holovaty', 'Willison'])
self.assertEqual(sorted(list(six.itervalues(d))),
['Developer', 'Simon', 'Willison'])
def test_appendlist(self):
d = MultiValueDict()
d.appendlist('name', 'Adrian')
d.appendlist('name', 'Simon')
self.assertEqual(d.getlist('name'), ['Adrian', 'Simon'])
def test_copy(self):
for copy_func in [copy.copy, lambda d: d.copy()]:
d1 = MultiValueDict({
"developers": ["Carl", "Fred"]
})
self.assertEqual(d1["developers"], "Fred")
d2 = copy_func(d1)
d2.update({"developers": "Groucho"})
self.assertEqual(d2["developers"], "Groucho")
self.assertEqual(d1["developers"], "Fred")
d1 = MultiValueDict({
"key": [[]]
})
self.assertEqual(d1["key"], [])
d2 = copy_func(d1)
d2["key"].append("Penguin")
self.assertEqual(d1["key"], ["Penguin"])
self.assertEqual(d2["key"], ["Penguin"])
def test_dict_translation(self):
mvd = MultiValueDict({
'devs': ['Bob', 'Joe'],
'pm': ['Rory'],
})
d = mvd.dict()
self.assertEqual(sorted(six.iterkeys(d)), sorted(six.iterkeys(mvd)))
for key in six.iterkeys(mvd):
self.assertEqual(d[key], mvd[key])
self.assertEqual({}, MultiValueDict().dict())
class ImmutableListTests(SimpleTestCase):
def test_sort(self):
d = ImmutableList(range(10))
# AttributeError: ImmutableList object is immutable.
self.assertRaisesMessage(AttributeError,
'ImmutableList object is immutable.', d.sort)
self.assertEqual(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.assertEqual(d[1], 1)
# AttributeError: Object is immutable!
self.assertRaisesMessage(AttributeError,
'Object is immutable!', d.__setitem__, 1, 'test')
class DictWrapperTests(SimpleTestCase):
def test_dictwrapper(self):
f = lambda x: "*%s" % x
d = DictWrapper({'a': 'a'}, f, 'xx_')
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self.assertEqual(
"Normal: %(a)s. Modified: %(xx_a)s" % d,
'Normal: a. Modified: *a'
)