1 files changed, 6 insertions, 5 deletions
diff --git a/tests/config/test_tls.py b/tests/config/test_tls.py
index c260d3359f..40ca428778 100644
--- a/tests/config/test_tls.py
+++ b/tests/config/test_tls.py
@@ -26,7 +26,6 @@ class TestConfig(TlsConfig):
 
 
 class TLSConfigTests(TestCase):
-
     def test_warn_self_signed(self):
         """
         Synapse will give a warning when it loads a self-signed certificate.
@@ -34,7 +33,8 @@ class TLSConfigTests(TestCase):
         config_dir = self.mktemp()
         os.mkdir(config_dir)
         with open(os.path.join(config_dir, "cert.pem"), 'w') as f:
-            f.write("""-----BEGIN CERTIFICATE-----
+            f.write(
+                """-----BEGIN CERTIFICATE-----
 MIID6DCCAtACAws9CjANBgkqhkiG9w0BAQUFADCBtzELMAkGA1UEBhMCVFIxDzAN
 BgNVBAgMBsOHb3J1bTEUMBIGA1UEBwwLQmHFn21ha8OnxLExEjAQBgNVBAMMCWxv
 Y2FsaG9zdDEcMBoGA1UECgwTVHdpc3RlZCBNYXRyaXggTGFiczEkMCIGA1UECwwb
@@ -56,11 +56,12 @@ I8OtG1xGwcok53lyDuuUUDexnK4O5BkjKiVlNPg4HPim5Kuj2hRNFfNt/F2BVIlj
 iZupikC5MT1LQaRwidkSNxCku1TfAyueiBwhLnFwTmIGNnhuDCutEVAD9kFmcJN2
 SznugAcPk4doX2+rL+ila+ThqgPzIkwTUHtnmjI0TI6xsDUlXz5S3UyudrE2Qsfz
 s4niecZKPBizL6aucT59CsunNmmb5Glq8rlAcU+1ZTZZzGYqVYhF6axB9Qg=
------END CERTIFICATE-----""")
+-----END CERTIFICATE-----"""
+            )
 
         config = {
             "tls_certificate_path": os.path.join(config_dir, "cert.pem"),
-            "tls_fingerprints": []
+            "tls_fingerprints": [],
         }
 
         t = TestConfig()
@@ -75,5 +76,5 @@ s4niecZKPBizL6aucT59CsunNmmb5Glq8rlAcU+1ZTZZzGYqVYhF6axB9Qg=
                 "Self-signed TLS certificates will not be accepted by "
                 "Synapse 1.0. Please either provide a valid certificate, "
                 "or use Synapse's ACME support to provision one."
-            )
+            ),
         )