1 files changed, 48 insertions, 0 deletions
diff --git a/python/mach/mach/test/test_logger.py b/python/mach/mach/test/test_logger.py
new file mode 100644
index 0000000000..643d890de8
--- /dev/null
+++ b/python/mach/mach/test/test_logger.py
@@ -0,0 +1,48 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import logging
+import time
+import unittest
+
+from mozunit import main
+
+from mach.logging import StructuredHumanFormatter
+
+
+class DummyLogger(logging.Logger):
+    def __init__(self, cb):
+        logging.Logger.__init__(self, "test")
+
+        self._cb = cb
+
+    def handle(self, record):
+        self._cb(record)
+
+
+class TestStructuredHumanFormatter(unittest.TestCase):
+    def test_non_ascii_logging(self):
+        # Ensures the formatter doesn't choke when non-ASCII characters are
+        # present in printed parameters.
+        formatter = StructuredHumanFormatter(time.time())
+
+        def on_record(record):
+            result = formatter.format(record)
+            relevant = result[9:]
+
+            self.assertEqual(relevant, "Test: s\xe9curit\xe9")
+
+        logger = DummyLogger(on_record)
+
+        value = "s\xe9curit\xe9"
+
+        logger.log(
+            logging.INFO,
+            "Test: {utf}",
+            extra={"action": "action", "params": {"utf": value}},
+        )
+
+
+if __name__ == "__main__":
+    main()