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"""
Tests for stuff in django.utils.datastructures.
"""
import copy
from django.test import SimpleTestCase
from django.utils.datastructures import (
CaseInsensitiveMapping, 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)
def test_len(self):
s = OrderedSet()
self.assertEqual(len(s), 0)
s.add(1)
s.add(2)
s.add(2)
self.assertEqual(len(s), 2)
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'])
self.assertEqual(
sorted(d.items()),
[('name', 'Simon'), ('position', 'Developer')]
)
self.assertEqual(
sorted(d.lists()),
[('name', ['Adrian', 'Simon']), ('position', ['Developer'])]
)
with self.assertRaises(MultiValueDictKeyError) as cm:
d.__getitem__('lastname')
self.assertEqual(str(cm.exception), "'lastname'")
self.assertIsNone(d.get('lastname'))
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(d.values()), ['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(d), sorted(mvd))
for key in mvd:
self.assertEqual(d[key], mvd[key])
self.assertEqual({}, MultiValueDict().dict())
def test_getlist_doesnt_mutate(self):
x = MultiValueDict({'a': ['1', '2'], 'b': ['3']})
values = x.getlist('a')
values += x.getlist('b')
self.assertEqual(x.getlist('a'), ['1', '2'])
def test_internal_getlist_does_mutate(self):
x = MultiValueDict({'a': ['1', '2'], 'b': ['3']})
values = x._getlist('a')
values += x._getlist('b')
self.assertEqual(x._getlist('a'), ['1', '2', '3'])
def test_getlist_default(self):
x = MultiValueDict({'a': [1]})
MISSING = object()
values = x.getlist('b', default=MISSING)
self.assertIs(values, MISSING)
def test_getlist_none_empty_values(self):
x = MultiValueDict({'a': None, 'b': []})
self.assertIsNone(x.getlist('a'))
self.assertEqual(x.getlist('b'), [])
class ImmutableListTests(SimpleTestCase):
def test_sort(self):
d = ImmutableList(range(10))
# AttributeError: ImmutableList object is immutable.
with 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!
with self.assertRaisesMessage(AttributeError, 'Object is immutable!'):
d.__setitem__(1, 'test')
class DictWrapperTests(SimpleTestCase):
def test_dictwrapper(self):
def f(x):
return "*%s" % x
d = DictWrapper({'a': 'a'}, f, 'xx_')
self.assertEqual(
"Normal: %(a)s. Modified: %(xx_a)s" % d,
'Normal: a. Modified: *a'
)
class CaseInsensitiveMappingTests(SimpleTestCase):
def setUp(self):
self.dict1 = CaseInsensitiveMapping({
'Accept': 'application/json',
'content-type': 'text/html',
})
def test_create_with_invalid_values(self):
msg = 'dictionary update sequence element #1 has length 4; 2 is required'
with self.assertRaisesMessage(ValueError, msg):
CaseInsensitiveMapping([('Key1', 'Val1'), 'Key2'])
def test_create_with_invalid_key(self):
msg = 'Element key 1 invalid, only strings are allowed'
with self.assertRaisesMessage(ValueError, msg):
CaseInsensitiveMapping([(1, '2')])
def test_list(self):
self.assertEqual(sorted(list(self.dict1)), sorted(['Accept', 'content-type']))
def test_dict(self):
self.assertEqual(dict(self.dict1), {'Accept': 'application/json', 'content-type': 'text/html'})
def test_repr(self):
dict1 = CaseInsensitiveMapping({'Accept': 'application/json'})
dict2 = CaseInsensitiveMapping({'content-type': 'text/html'})
self.assertEqual(repr(dict1), repr({'Accept': 'application/json'}))
self.assertEqual(repr(dict2), repr({'content-type': 'text/html'}))
def test_str(self):
dict1 = CaseInsensitiveMapping({'Accept': 'application/json'})
dict2 = CaseInsensitiveMapping({'content-type': 'text/html'})
self.assertEqual(str(dict1), str({'Accept': 'application/json'}))
self.assertEqual(str(dict2), str({'content-type': 'text/html'}))
def test_equal(self):
self.assertEqual(self.dict1, {'Accept': 'application/json', 'content-type': 'text/html'})
self.assertNotEqual(self.dict1, {'accept': 'application/jso', 'Content-Type': 'text/html'})
self.assertNotEqual(self.dict1, 'string')
def test_items(self):
other = {'Accept': 'application/json', 'content-type': 'text/html'}
self.assertEqual(sorted(self.dict1.items()), sorted(other.items()))
def test_copy(self):
copy = self.dict1.copy()
self.assertIs(copy, self.dict1)
self.assertEqual(copy, self.dict1)
def test_getitem(self):
self.assertEqual(self.dict1['Accept'], 'application/json')
self.assertEqual(self.dict1['accept'], 'application/json')
self.assertEqual(self.dict1['aCCept'], 'application/json')
self.assertEqual(self.dict1['content-type'], 'text/html')
self.assertEqual(self.dict1['Content-Type'], 'text/html')
self.assertEqual(self.dict1['Content-type'], 'text/html')
def test_in(self):
self.assertIn('Accept', self.dict1)
self.assertIn('accept', self.dict1)
self.assertIn('aCCept', self.dict1)
self.assertIn('content-type', self.dict1)
self.assertIn('Content-Type', self.dict1)
def test_del(self):
self.assertIn('Accept', self.dict1)
msg = "'CaseInsensitiveMapping' object does not support item deletion"
with self.assertRaisesMessage(TypeError, msg):
del self.dict1['Accept']
self.assertIn('Accept', self.dict1)
def test_set(self):
self.assertEqual(len(self.dict1), 2)
msg = "'CaseInsensitiveMapping' object does not support item assignment"
with self.assertRaisesMessage(TypeError, msg):
self.dict1['New Key'] = 1
self.assertEqual(len(self.dict1), 2)
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