Add list iter __length_hint__ tests

2020-01-10 11:38:12 -06:00
parent abedbfdce8
commit 7d40f45ff5
1 changed files with 13 additions and 0 deletions
--- a/tests/snippets/list.py
+++ b/tests/snippets/list.py
@@ -619,3 +619,16 @@ assert_raises(TypeError, iadd_int)
 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