From cf61c6859dcc4ebb70ede5327562142746ca0631 Mon Sep 17 00:00:00 2001
From: anthony sottile <asottile@umich.edu>
Date: Tue, 22 Sep 2026 17:22:34 -0400
Subject: [PATCH] add test for check(...) of non-string

---
 pyflakes/test/test_api.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pyflakes/test/test_api.py b/pyflakes/test/test_api.py
index d05dd968..a7c492a7 100644
--- a/pyflakes/test/test_api.py
+++ b/pyflakes/test/test_api.py
@@ -624,6 +624,13 @@ def test_stdinReportsErrors(self):
         ]
         self.assertEqual(errlines, expected_error)
 
+    def test_check_unknown_error(self):
+        err = io.StringIO()
+        count = withStderrTo(err, check, None, '<stdin>')
+        self.assertEqual(count, 1)
+        # XXX: this hides the actual error -- probably should just let it raise?
+        self.assertEqual(err.getvalue(), '<stdin>: problem decoding source\n')
+
 
 class IntegrationTests(TestCase):
     """