Fix incorrect reference to StringIO

This was introduced in 4f2f5171

1 files changed, 38 insertions, 0 deletions

diff --git a/tests/util/test_logformatter.py b/tests/util/test_logformatter.py
new file mode 100644
index 0000000000..1a1a8412f2
--- /dev/null
+++ b/tests/util/test_logformatter.py
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import sys
+
+from synapse.util.logformatter import LogFormatter
+from tests import unittest
+
+
+class TestException(Exception):
+    pass
+
+
+class LogFormatterTestCase(unittest.TestCase):
+    def test_formatter(self):
+        formatter = LogFormatter()
+
+        try:
+            raise TestException("testytest")
+        except TestException:
+            ei = sys.exc_info()
+
+        output = formatter.formatException(ei)
+
+        # check the output looks vaguely sane
+        self.assertIn("testytest", output)
+        self.assertIn("Capture point", output)