1 files changed, 16 insertions, 0 deletions
diff --git a/Lib/test/test_unittest/test_case.py b/Lib/test/test_unittest/test_case.py
index d66cab146af..cf10e956bf2 100644
--- a/Lib/test/test_unittest/test_case.py
+++ b/Lib/test/test_unittest/test_case.py
@@ -1920,6 +1920,22 @@ test case
             with self.assertLogs():
                 raise ZeroDivisionError("Unexpected")
 
+    def testAssertLogsWithFormatter(self):
+        # Check alternative formats will be respected
+        format = "[No.1: the larch] %(levelname)s:%(name)s:%(message)s"
+        formatter = logging.Formatter(format)
+        with self.assertNoStderr():
+            with self.assertLogs() as cm:
+                log_foo.info("1")
+                log_foobar.debug("2")
+            self.assertEqual(cm.output, ["INFO:foo:1"])
+            self.assertLogRecords(cm.records, [{'name': 'foo'}])
+            with self.assertLogs(formatter=formatter) as cm:
+                log_foo.info("1")
+                log_foobar.debug("2")
+            self.assertEqual(cm.output, ["[No.1: the larch] INFO:foo:1"])
+            self.assertLogRecords(cm.records, [{'name': 'foo'}])
+
     def testAssertNoLogsDefault(self):
         with self.assertRaises(self.failureException) as cm:
             with self.assertNoLogs():