cpython/Lib/test/test_dictviews.py

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import unittest
from test import support
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class DictSetTest(unittest.TestCase):
def test_constructors_not_callable(self):
kt = type({}.keys())
self.assertRaises(TypeError, kt, {})
self.assertRaises(TypeError, kt)
it = type({}.items())
self.assertRaises(TypeError, it, {})
self.assertRaises(TypeError, it)
vt = type({}.values())
self.assertRaises(TypeError, vt, {})
self.assertRaises(TypeError, vt)
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def test_dict_keys(self):
d = {1: 10, "a": "ABC"}
keys = d.keys()
self.assertEqual(len(keys), 2)
self.assertEqual(set(keys), {1, "a"})
self.assertEqual(keys, {1, "a"})
self.assertNotEqual(keys, {1, "a", "b"})
self.assertNotEqual(keys, {1, "b"})
self.assertNotEqual(keys, {1})
self.assertNotEqual(keys, 42)
self.assertIn(1, keys)
self.assertIn("a", keys)
self.assertNotIn(10, keys)
self.assertNotIn("Z", keys)
self.assertEqual(d.keys(), d.keys())
e = {1: 11, "a": "def"}
self.assertEqual(d.keys(), e.keys())
del e["a"]
self.assertNotEqual(d.keys(), e.keys())
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def test_dict_items(self):
d = {1: 10, "a": "ABC"}
items = d.items()
self.assertEqual(len(items), 2)
self.assertEqual(set(items), {(1, 10), ("a", "ABC")})
self.assertEqual(items, {(1, 10), ("a", "ABC")})
self.assertNotEqual(items, {(1, 10), ("a", "ABC"), "junk"})
self.assertNotEqual(items, {(1, 10), ("a", "def")})
self.assertNotEqual(items, {(1, 10)})
self.assertNotEqual(items, 42)
self.assertIn((1, 10), items)
self.assertIn(("a", "ABC"), items)
self.assertNotIn((1, 11), items)
self.assertNotIn(1, items)
self.assertNotIn((), items)
self.assertNotIn((1,), items)
self.assertNotIn((1, 2, 3), items)
self.assertEqual(d.items(), d.items())
e = d.copy()
self.assertEqual(d.items(), e.items())
e["a"] = "def"
self.assertNotEqual(d.items(), e.items())
def test_dict_mixed_keys_items(self):
d = {(1, 1): 11, (2, 2): 22}
e = {1: 1, 2: 2}
self.assertEqual(d.keys(), e.items())
self.assertNotEqual(d.items(), e.keys())
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def test_dict_values(self):
d = {1: 10, "a": "ABC"}
values = d.values()
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self.assertEqual(set(values), {10, "ABC"})
self.assertEqual(len(values), 2)
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def test_main():
support.run_unittest(DictSetTest)
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if __name__ == "__main__":
test_main()