Method test_bool

Lib/test/test_collections.py:169–173

(self)

        self.assertEqual(ChainMap({1:2}).maps, [{1:2}])                # 1 arg --> list

    def test_bool(self):
        self.assertFalse(ChainMap())
        self.assertFalse(ChainMap({}, {}))
        self.assertTrue(ChainMap({1:2}, {}))
        self.assertTrue(ChainMap({}, {1:2}))

    def test_missing(self):
        class DefaultChainMap(ChainMap):