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370 lines
13 KiB
Python
370 lines
13 KiB
Python
"""
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Tests for stuff in django.utils.datastructures.
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"""
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import collections.abc
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import copy
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import pickle
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from django.test import SimpleTestCase
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from django.utils.datastructures import (
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CaseInsensitiveMapping,
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DictWrapper,
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ImmutableList,
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MultiValueDict,
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MultiValueDictKeyError,
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OrderedSet,
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)
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class OrderedSetTests(SimpleTestCase):
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def test_init_with_iterable(self):
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s = OrderedSet([1, 2, 3])
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self.assertEqual(list(s.dict.keys()), [1, 2, 3])
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def test_remove(self):
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s = OrderedSet()
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self.assertEqual(len(s), 0)
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s.add(1)
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s.add(2)
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s.remove(2)
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self.assertEqual(len(s), 1)
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self.assertNotIn(2, s)
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def test_discard(self):
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s = OrderedSet()
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self.assertEqual(len(s), 0)
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s.add(1)
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s.discard(2)
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self.assertEqual(len(s), 1)
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def test_reversed(self):
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s = reversed(OrderedSet([1, 2, 3]))
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self.assertIsInstance(s, collections.abc.Iterator)
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self.assertEqual(list(s), [3, 2, 1])
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def test_contains(self):
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s = OrderedSet()
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self.assertEqual(len(s), 0)
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s.add(1)
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self.assertIn(1, s)
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def test_bool(self):
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# Refs #23664
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s = OrderedSet()
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self.assertFalse(s)
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s.add(1)
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self.assertTrue(s)
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def test_len(self):
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s = OrderedSet()
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self.assertEqual(len(s), 0)
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s.add(1)
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s.add(2)
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s.add(2)
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self.assertEqual(len(s), 2)
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def test_repr(self):
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self.assertEqual(repr(OrderedSet()), "OrderedSet()")
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self.assertEqual(repr(OrderedSet([2, 3, 2, 1])), "OrderedSet([2, 3, 1])")
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class MultiValueDictTests(SimpleTestCase):
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def test_repr(self):
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d = MultiValueDict({"key": "value"})
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self.assertEqual(repr(d), "<MultiValueDict: {'key': 'value'}>")
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def test_multivaluedict(self):
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d = MultiValueDict(
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{"name": ["Adrian", "Simon"], "position": ["Developer"], "empty": []}
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)
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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(
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list(d.items()),
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[("name", "Simon"), ("position", "Developer"), ("empty", [])],
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)
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self.assertEqual(
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list(d.lists()),
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[("name", ["Adrian", "Simon"]), ("position", ["Developer"]), ("empty", [])],
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)
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with self.assertRaisesMessage(MultiValueDictKeyError, "'lastname'"):
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d.__getitem__("lastname")
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self.assertIsNone(d.get("empty"))
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self.assertEqual(d.get("empty", "nonexistent"), "nonexistent")
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self.assertIsNone(d.get("lastname"))
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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(
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d.getlist("doesnotexist", ["Adrian", "Simon"]), ["Adrian", "Simon"]
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)
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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(list(d.values()), ["Simon", "Developer", [], "Willison"])
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d.setlistdefault("lastname", ["Doe"])
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self.assertEqual(d.getlist("lastname"), ["Holovaty", "Willison"])
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d.setlistdefault("newkey", ["Doe"])
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self.assertEqual(d.getlist("newkey"), ["Doe"])
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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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with self.subTest(copy_func):
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d1 = MultiValueDict({"developers": ["Carl", "Fred"]})
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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({"key": [[]]})
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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_deepcopy(self):
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d1 = MultiValueDict({"a": [[123]]})
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d2 = copy.copy(d1)
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d3 = copy.deepcopy(d1)
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self.assertIs(d1["a"], d2["a"])
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self.assertIsNot(d1["a"], d3["a"])
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def test_pickle(self):
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x = MultiValueDict({"a": ["1", "2"], "b": ["3"]})
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self.assertEqual(x, pickle.loads(pickle.dumps(x)))
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def test_dict_translation(self):
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mvd = MultiValueDict(
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{
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"devs": ["Bob", "Joe"],
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"pm": ["Rory"],
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}
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)
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d = mvd.dict()
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self.assertEqual(list(d), list(mvd))
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for key in mvd:
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self.assertEqual(d[key], mvd[key])
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self.assertEqual({}, MultiValueDict().dict())
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def test_getlist_doesnt_mutate(self):
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x = MultiValueDict({"a": ["1", "2"], "b": ["3"]})
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values = x.getlist("a")
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values += x.getlist("b")
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self.assertEqual(x.getlist("a"), ["1", "2"])
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def test_internal_getlist_does_mutate(self):
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x = MultiValueDict({"a": ["1", "2"], "b": ["3"]})
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values = x._getlist("a")
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values += x._getlist("b")
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self.assertEqual(x._getlist("a"), ["1", "2", "3"])
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def test_getlist_default(self):
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x = MultiValueDict({"a": [1]})
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MISSING = object()
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values = x.getlist("b", default=MISSING)
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self.assertIs(values, MISSING)
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def test_getlist_none_empty_values(self):
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x = MultiValueDict({"a": None, "b": []})
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self.assertIsNone(x.getlist("a"))
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self.assertEqual(x.getlist("b"), [])
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def test_setitem(self):
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x = MultiValueDict({"a": [1, 2]})
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x["a"] = 3
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self.assertEqual(list(x.lists()), [("a", [3])])
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def test_setdefault(self):
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x = MultiValueDict({"a": [1, 2]})
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a = x.setdefault("a", 3)
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b = x.setdefault("b", 3)
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self.assertEqual(a, 2)
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self.assertEqual(b, 3)
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self.assertEqual(list(x.lists()), [("a", [1, 2]), ("b", [3])])
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def test_update_too_many_args(self):
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x = MultiValueDict({"a": []})
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msg = "update expected at most 1 argument, got 2"
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with self.assertRaisesMessage(TypeError, msg):
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x.update(1, 2)
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def test_update_no_args(self):
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x = MultiValueDict({"a": []})
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x.update()
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self.assertEqual(list(x.lists()), [("a", [])])
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def test_update_dict_arg(self):
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x = MultiValueDict({"a": [1], "b": [2], "c": [3]})
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x.update({"a": 4, "b": 5})
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self.assertEqual(list(x.lists()), [("a", [1, 4]), ("b", [2, 5]), ("c", [3])])
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def test_update_multivaluedict_arg(self):
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x = MultiValueDict({"a": [1], "b": [2], "c": [3]})
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x.update(MultiValueDict({"a": [4], "b": [5]}))
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self.assertEqual(list(x.lists()), [("a", [1, 4]), ("b", [2, 5]), ("c", [3])])
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def test_update_kwargs(self):
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x = MultiValueDict({"a": [1], "b": [2], "c": [3]})
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x.update(a=4, b=5)
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self.assertEqual(list(x.lists()), [("a", [1, 4]), ("b", [2, 5]), ("c", [3])])
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def test_update_with_empty_iterable(self):
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for value in ["", b"", (), [], set(), {}]:
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d = MultiValueDict()
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d.update(value)
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self.assertEqual(d, MultiValueDict())
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def test_update_with_iterable_of_pairs(self):
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for value in [(("a", 1),), [("a", 1)], {("a", 1)}]:
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d = MultiValueDict()
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d.update(value)
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self.assertEqual(d, MultiValueDict({"a": [1]}))
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def test_update_raises_correct_exceptions(self):
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# MultiValueDict.update() raises equivalent exceptions to
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# dict.update().
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# Non-iterable values raise TypeError.
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for value in [None, True, False, 123, 123.45]:
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with self.subTest(value), self.assertRaises(TypeError):
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MultiValueDict().update(value)
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# Iterables of objects that cannot be unpacked raise TypeError.
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for value in [b"123", b"abc", (1, 2, 3), [1, 2, 3], {1, 2, 3}]:
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with self.subTest(value), self.assertRaises(TypeError):
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MultiValueDict().update(value)
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# Iterables of unpackable objects with incorrect number of items raise
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# ValueError.
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for value in ["123", "abc", ("a", "b", "c"), ["a", "b", "c"], {"a", "b", "c"}]:
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with self.subTest(value), self.assertRaises(ValueError):
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MultiValueDict().update(value)
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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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with self.assertRaisesMessage(
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AttributeError, "ImmutableList object is immutable."
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):
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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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with self.assertRaisesMessage(AttributeError, "Object is immutable!"):
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d.__setitem__(1, "test")
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class DictWrapperTests(SimpleTestCase):
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def test_dictwrapper(self):
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def f(x):
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return "*%s" % x
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d = DictWrapper({"a": "a"}, f, "xx_")
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self.assertEqual(
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"Normal: %(a)s. Modified: %(xx_a)s" % d, "Normal: a. Modified: *a"
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)
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class CaseInsensitiveMappingTests(SimpleTestCase):
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def setUp(self):
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self.dict1 = CaseInsensitiveMapping(
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{
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"Accept": "application/json",
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"content-type": "text/html",
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}
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)
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def test_create_with_invalid_values(self):
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msg = "dictionary update sequence element #1 has length 4; 2 is required"
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with self.assertRaisesMessage(ValueError, msg):
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CaseInsensitiveMapping([("Key1", "Val1"), "Key2"])
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def test_create_with_invalid_key(self):
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msg = "Element key 1 invalid, only strings are allowed"
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with self.assertRaisesMessage(ValueError, msg):
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CaseInsensitiveMapping([(1, "2")])
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def test_list(self):
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self.assertEqual(list(self.dict1), ["Accept", "content-type"])
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def test_dict(self):
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self.assertEqual(
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dict(self.dict1),
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{"Accept": "application/json", "content-type": "text/html"},
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)
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def test_repr(self):
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dict1 = CaseInsensitiveMapping({"Accept": "application/json"})
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dict2 = CaseInsensitiveMapping({"content-type": "text/html"})
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self.assertEqual(repr(dict1), repr({"Accept": "application/json"}))
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self.assertEqual(repr(dict2), repr({"content-type": "text/html"}))
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def test_str(self):
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dict1 = CaseInsensitiveMapping({"Accept": "application/json"})
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dict2 = CaseInsensitiveMapping({"content-type": "text/html"})
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self.assertEqual(str(dict1), str({"Accept": "application/json"}))
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self.assertEqual(str(dict2), str({"content-type": "text/html"}))
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def test_equal(self):
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self.assertEqual(
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self.dict1, {"Accept": "application/json", "content-type": "text/html"}
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)
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self.assertNotEqual(
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self.dict1, {"accept": "application/jso", "Content-Type": "text/html"}
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)
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self.assertNotEqual(self.dict1, "string")
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def test_items(self):
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other = {"Accept": "application/json", "content-type": "text/html"}
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self.assertEqual(sorted(self.dict1.items()), sorted(other.items()))
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def test_copy(self):
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copy = self.dict1.copy()
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self.assertIs(copy, self.dict1)
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self.assertEqual(copy, self.dict1)
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def test_getitem(self):
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self.assertEqual(self.dict1["Accept"], "application/json")
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self.assertEqual(self.dict1["accept"], "application/json")
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self.assertEqual(self.dict1["aCCept"], "application/json")
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self.assertEqual(self.dict1["content-type"], "text/html")
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self.assertEqual(self.dict1["Content-Type"], "text/html")
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self.assertEqual(self.dict1["Content-type"], "text/html")
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def test_in(self):
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self.assertIn("Accept", self.dict1)
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self.assertIn("accept", self.dict1)
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self.assertIn("aCCept", self.dict1)
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self.assertIn("content-type", self.dict1)
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self.assertIn("Content-Type", self.dict1)
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def test_del(self):
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self.assertIn("Accept", self.dict1)
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msg = "'CaseInsensitiveMapping' object does not support item deletion"
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with self.assertRaisesMessage(TypeError, msg):
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del self.dict1["Accept"]
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self.assertIn("Accept", self.dict1)
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def test_set(self):
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self.assertEqual(len(self.dict1), 2)
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msg = "'CaseInsensitiveMapping' object does not support item assignment"
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with self.assertRaisesMessage(TypeError, msg):
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self.dict1["New Key"] = 1
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self.assertEqual(len(self.dict1), 2)
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