Add list iter __length_hint__ tests

coolreader18 · coolreader18 · commit 7d40f45ff55d · 2020-01-10T11:38:12.000-06:00
diff --git a/tests/snippets/list.py b/tests/snippets/list.py
@@ -619,3 +619,16 @@ def iadd_slice():
 assert_raises(TypeError, iadd_slice)
 
 
+it = iter([1,2,3,4])
+assert it.__length_hint__() == 4
+assert next(it) == 1
+assert it.__length_hint__() == 3
+assert list(it) == [2,3,4]
+assert it.__length_hint__() == 0
+
+it = reversed([1,2,3,4])
+assert it.__length_hint__() == 4
+assert next(it) == 4
+assert it.__length_hint__() == 3
+assert list(it) == [3,2,1]
+assert it.__length_hint__() == 0
