Method test_abc_views

Lib/test/test_pprint.py:628–663

(self)

                                     joiner.join(repr(item) for item in i))

    def test_abc_views(self):
        empty = {}
        short = dict(zip('edcba', 'edcba'))
        long = dict((chr(x), chr(x)) for x in range(90, 64, -1))
        lengths = {"empty": empty, "short": short, "long": long}
        # Test that a subclass that doesn't replace __repr__ works with different lengths
        class MV(MappingView): pass

        for name, d in lengths.items():
            with self.subTest(length=name, name="Views"):
                is_short = len(d) < 6
                joiner = ", " if is_short else ",\n "
                i = d.items()
                s = sorted(i)
                joined_items = "({%s})" % joiner.join(["%r: %r" % (k, v) for (k, v) in i])
                sorted_items = "({%s})" % joiner.join(["%r: %r" % (k, v) for (k, v) in s])
                self.assertEqual(pprint.pformat(KeysView(d), sort_dicts=True),
                                 KeysView.__name__ + sorted_items)
                self.assertEqual(pprint.pformat(ItemsView(d), sort_dicts=True),
                                 ItemsView.__name__ + sorted_items)
                self.assertEqual(pprint.pformat(MappingView(d), sort_dicts=True),
                                 MappingView.__name__ + sorted_items)
                self.assertEqual(pprint.pformat(MV(d), sort_dicts=True),
                                 MV.__name__ + sorted_items)
                self.assertEqual(pprint.pformat(ValuesView(d), sort_dicts=True),
                                 ValuesView.__name__ + sorted_items)
                self.assertEqual(pprint.pformat(KeysView(d), sort_dicts=False),
                                 KeysView.__name__ + joined_items)
                self.assertEqual(pprint.pformat(ItemsView(d), sort_dicts=False),
                                 ItemsView.__name__ + joined_items)
                self.assertEqual(pprint.pformat(MappingView(d), sort_dicts=False),
                                 MappingView.__name__ + joined_items)
                self.assertEqual(pprint.pformat(MV(d), sort_dicts=False),
                                 MV.__name__ + joined_items)
                self.assertEqual(pprint.pformat(ValuesView(d), sort_dicts=False),
                                 ValuesView.__name__ + joined_items)

    def test_nested_views(self):
        d = {1: MappingView({1: MappingView({1: MappingView({1: 2})})})}