1 files changed, 10 insertions, 0 deletions
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index 54a3b35b7a..021ae95bb2 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -140,6 +140,16 @@ class AST_Tests(unittest.TestCase):
                 self.assertEquals(to_tuple(ast_tree), o)
                 self._assert_order(ast_tree, (0, 0))
 
+    def test_slice(self):
+        slc = ast.parse("x[::]").body[0].value.slice
+        self.assertIsNone(slc.upper)
+        self.assertIsNone(slc.lower)
+        self.assertIsNone(slc.step)
+
+    def test_from_import(self):
+        im = ast.parse("from . import y").body[0]
+        self.assertIsNone(im.module)
+
     def test_nodeclasses(self):
         x = ast.BinOp(1, 2, 3, lineno=0)
         self.assertEquals(x.left, 1)