[3.12] gh-105908: fix `barry_as_FLUFL` future import (GH-105909) (#105930)

(cherry picked from commit 28187a9c4f95affe50fd37e0db0db177e2b9c2e9)

Co-authored-by: Crowthebird <78076854+thatbirdguythatuknownot@users.noreply.github.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/Lib/test/test_future.py b/Lib/test/test_future.py
index b8b591a..4730bfa 100644
--- a/Lib/test/test_future.py
+++ b/Lib/test/test_future.py
@@ -4,6 +4,7 @@ import __future__
 import ast
 import unittest
 from test.support import import_helper
+from test.support.script_helper import spawn_python, kill_python
 from textwrap import dedent
 import os
 import re
@@ -121,6 +122,13 @@ class FutureTest(unittest.TestCase):
         exec("from __future__ import unicode_literals; x = ''", {}, scope)
         self.assertIsInstance(scope["x"], str)
 
+    def test_syntactical_future_repl(self):
+        p = spawn_python('-i')
+        p.stdin.write(b"from __future__ import barry_as_FLUFL\n")
+        p.stdin.write(b"2 <> 3\n")
+        out = kill_python(p)
+        self.assertNotIn(b'SyntaxError: invalid syntax', out)
+
 class AnnotationsFutureTestCase(unittest.TestCase):
     template = dedent(
         """