python3Packages.firebase-admin: test fixes (#407774)

pkgs/development/python-modules/firebase-admin/default.nix

···
   buildPythonPackage,
   fetchFromGitHub,
   setuptools,
-  hatchling,
   cachecontrol,
   cryptography,
   google-api-python-client,
···
   pyjwt,
   requests,
   pytestCheckHook,
+  pytest-asyncio,
   pytest-localserver,
   pytest-mock,
 }:
···
 
   nativeCheckInputs = [
     pytestCheckHook
+    pytest-asyncio
     pytest-localserver
     pytest-mock
   ];
 
   __darwinAllowLocalNetworking = true;
 
-  disabledTests = [
-    # Flaky (AssertionError)
-    # >       assert delta <= timedelta(seconds=15)
-    # E       assert datetime.timedelta(seconds=17, microseconds=28239) <= datetime.timedelta(seconds=15)
-    "test_task_options"
-  ];
+  disabledTests =
+    [
+      # Flaky (AssertionError)
+      # >       assert delta <= timedelta(seconds=15)
+      # E       assert datetime.timedelta(seconds=17, microseconds=28239) <= datetime.timedelta(seconds=15)
+      "test_task_options"
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      # Flaky / timing sensitive
+      "test_expired_cookie_with_tolerance"
+      "test_expired_token_with_tolerance"
+    ];
 
   meta = {
     description = "Firebase Admin Python SDK";
     homepage = "https://github.com/firebase/firebase-admin-python";
     changelog = "https://github.com/firebase/firebase-admin-python/releases/tag/${src.tag}";
     license = lib.licenses.asl20;
-    maintainers = with lib.maintainers; [ jhahn ];
+    maintainers = with lib.maintainers; [
+      jhahn
+      sarahec
+    ];
   };
 }