[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

repo2docker/engine.py

@@ -183,7 +183,9 @@ def _registry_credentials_validate(self, proposal):
         """
         new = proposal["value"]
         if len({"registry", "username", "password"} & new.keys()) != 3:
-            raise TraitError("registry_credentials must have keys 'registry', 'username' and 'password'")
+            raise TraitError(
+                "registry_credentials must have keys 'registry', 'username' and 'password'"
+            )
 
     string_output = True
     """

tests/norun/test_registry.py

@@ -184,8 +184,7 @@ def test_registry_explicit_creds(registry, dind):
             env = os.environ.copy()
             env["DOCKER_CONFIG"] = d
             proc = subprocess.run(
-                ["docker", "manifest", "inspect", "--insecure", image_name],
-                env=env
+                ["docker", "manifest", "inspect", "--insecure", image_name], env=env
             )
             assert proc.returncode == 0
 

tests/unit/test_engine.py

@@ -1,13 +1,18 @@
 import pytest
 from traitlets import TraitError
+
 from repo2docker.engine import ContainerEngine
 
 
 def test_registry_credentials():
     e = ContainerEngine(parent=None)
 
     # This should be fine
-    e.registry_credentials = {"registry": "something", "username": "something", "password": "something"}
+    e.registry_credentials = {
+        "registry": "something",
+        "username": "something",
+        "password": "something",
+    }
 
     with pytest.raises(TraitError):
         e.registry_credentials = {"hi": "bye"}