Very preliminary work on dict views.

Lib/test/test_dictviews.py

@@ -0,0 +1,25 @@
+import unittest
+from test import test_support
+
+class DictSetTest(unittest.TestCase):
+
+    def test_dict_keys(self):
+        d = {1: 10, "a": "ABC"}
+        keys = d.KEYS()
+        self.assertEqual(set(keys), {1, "a"})
+
+    def test_dict_items(self):
+        d = {1: 10, "a": "ABC"}
+        items = d.ITEMS()
+        self.assertEqual(set(items), {(1, 10), ("a", "ABC")})
+
+    def test_dict_values(self):
+        d = {1: 10, "a": "ABC"}
+        values = d.VALUES()
+        self.assertEqual(set(values), {10, "ABC"})
+
+def test_main():
+    test_support.run_unittest(DictSetTest)
+
+if __name__ == "__main__":
+    test_main()