[Python-checkins] bpo-31847: Fix commented out tests in test_syntax. (#4084)

[Serhiy Storchaka]

https://github.com/python/cpython/commit/3b66ebe7727dba68c2c6ccf0cd85a4c31255b9b4
commit: 3b66ebe7727dba68c2c6ccf0cd85a4c31255b9b4
branch: master
author: Serhiy Storchaka <storchaka at gmail.com>
committer: GitHub <noreply at github.com>
date: 2017-10-24T00:27:14+03:00
summary:

bpo-31847: Fix commented out tests in test_syntax. (#4084)

SyntaxError now is raised instead of SyntaxWarning.

files:
M Lib/test/test_syntax.py

diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 5d398e6688b..7ce3d75a892 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -415,6 +415,15 @@
      ...
    SyntaxError: name 'x' is used prior to nonlocal declaration
 
+   >>> def f():
+   ...     x = 1
+   ...     def g():
+   ...         x = 2
+   ...         nonlocal x
+   Traceback (most recent call last):
+     ...
+   SyntaxError: name 'x' is assigned to before nonlocal declaration
+
    >>> def f(x):
    ...     nonlocal x
    Traceback (most recent call last):
@@ -440,24 +449,7 @@
      ...
    SyntaxError: nonlocal declaration not allowed at module level
 
-TODO(jhylton): Figure out how to test SyntaxWarning with doctest.
-
-##   >>> def f(x):
-##   ...     def f():
-##   ...         print(x)
-##   ...         nonlocal x
-##   Traceback (most recent call last):
-##     ...
-##   SyntaxWarning: name 'x' is assigned to before nonlocal declaration
-
-##   >>> def f():
-##   ...     x = 1
-##   ...     nonlocal x
-##   Traceback (most recent call last):
-##     ...
-##   SyntaxWarning: name 'x' is assigned to before nonlocal declaration
-
- From https://bugs.python.org/issue25973
+From https://bugs.python.org/issue25973
    >>> class A:
    ...     def f(self):
    ...         nonlocal __x