From 41b49c68e5377f44e54fb1596b233a8da21c24f1 Mon Sep 17 00:00:00 2001
From: Julian Berman <Julian@GrayVines.com>
Date: Wed, 24 Apr 2024 17:00:19 +0300
Subject: [PATCH] Minor improvement to test failure message when a best match
 test fails.

---
 jsonschema/tests/test_exceptions.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/jsonschema/tests/test_exceptions.py b/jsonschema/tests/test_exceptions.py
index 18be0589..4052b5f1 100644
--- a/jsonschema/tests/test_exceptions.py
+++ b/jsonschema/tests/test_exceptions.py
@@ -8,8 +8,12 @@
 class TestBestMatch(TestCase):
     def best_match_of(self, instance, schema):
         errors = list(_LATEST_VERSION(schema).iter_errors(instance))
+        msg =  f"No errors found for {instance} under {schema!r}!"
+        self.assertTrue(errors, msg=msg)
+
         best = exceptions.best_match(iter(errors))
         reversed_best = exceptions.best_match(reversed(errors))
+
         self.assertEqual(
             best._contents(),
             reversed_best._contents(),