[Fix] Fix flaky tests: spend logs metadata keys, proxy CLI isolation, Redis TTL uniqueness

- Add new SpendLogsMetadata keys to ignored_keys in spend logs tests
  (regression from ccecc10c82 which intentionally includes all keys)
- Mock PrismaManager.setup_database and should_update_prisma_schema in
  proxy CLI tests to prevent real DB migrations from running in CI
- Use CliRunner(mix_stderr=False) to fix Click stream lifecycle issues
- Use unique UUID suffix for Redis TTL test keys to avoid stale state

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/test_litellm/proxy/hooks/test_parallel_request_limiter_v3.py

@@ -1176,8 +1176,11 @@ async def test_async_increment_tokens_with_ttl_preservation():
         )
 
     # Test keys - use hash tags to ensure they map to same Redis cluster slot
-    test_key_with_ttl = "{test_ttl}:with_ttl"
-    test_key_without_ttl = "{test_ttl}:without_ttl"
+    # Use a unique suffix per test run to avoid stale state from prior runs
+    import uuid
+    unique_suffix = str(uuid.uuid4())[:8]
+    test_key_with_ttl = f"{{test_ttl}}:with_ttl:{unique_suffix}"
+    test_key_without_ttl = f"{{test_ttl}}:without_ttl:{unique_suffix}"
 
     try:
         # Clean up any existing test keys

tests/test_litellm/proxy/spend_tracking/test_spend_management_endpoints.py

@@ -287,6 +287,18 @@ ignored_keys = [
     "metadata.additional_usage_values.speed",
     "metadata.litellm_overhead_time_ms",
     "metadata.cost_breakdown",
+    "metadata.user_api_key",
+    "metadata.user_api_key_alias",
+    "metadata.user_api_key_team_id",
+    "metadata.user_api_key_project_id",
+    "metadata.user_api_key_org_id",
+    "metadata.user_api_key_user_id",
+    "metadata.user_api_key_team_alias",
+    "metadata.spend_logs_metadata",
+    "metadata.requester_ip_address",
+    "metadata.status",
+    "metadata.proxy_server_request",
+    "metadata.error_information",
 ]
 
 MODEL_LIST = [

tests/test_litellm/proxy/test_proxy_cli.py

@@ -225,13 +225,15 @@ class TestProxyInitializationHelpers:
         assert modified_url == ""
 
     @patch("uvicorn.run")
-    @patch("atexit.register")  # 🔥 critical
-    def test_skip_server_startup(self, mock_atexit_register, mock_uvicorn_run):
+    @patch("atexit.register")  # critical
+    @patch("litellm.proxy.db.prisma_client.PrismaManager.setup_database")
+    @patch("litellm.proxy.db.prisma_client.should_update_prisma_schema", return_value=False)
+    def test_skip_server_startup(self, mock_should_update, mock_setup_db, mock_atexit_register, mock_uvicorn_run):
         from click.testing import CliRunner
 
         from litellm.proxy.proxy_cli import run_server
 
-        runner = CliRunner()
+        runner = CliRunner(mix_stderr=False)
 
         mock_proxy_module = MagicMock(
             app=MagicMock(),
@@ -594,7 +596,7 @@ class TestHealthAppFactory:
 
         from litellm.proxy.proxy_cli import run_server
 
-        runner = CliRunner()
+        runner = CliRunner(mix_stderr=False)
 
         # Mock subprocess.run to simulate prisma being available
         mock_subprocess_run.return_value = MagicMock(returncode=0)
@@ -602,20 +604,18 @@ class TestHealthAppFactory:
         # Mock should_update_prisma_schema to return True (so setup_database gets called)
         mock_should_update_schema.return_value = True
 
-        mock_app = MagicMock()
-        mock_proxy_config = MagicMock()
-        mock_key_mgmt = MagicMock()
-        mock_save_worker_config = MagicMock()
+        mock_proxy_module = MagicMock(
+            app=MagicMock(),
+            ProxyConfig=MagicMock(),
+            KeyManagementSettings=MagicMock(),
+            save_worker_config=MagicMock(),
+        )
 
         with patch.dict(
             "sys.modules",
             {
-                "proxy_server": MagicMock(
-                    app=mock_app,
-                    ProxyConfig=mock_proxy_config,
-                    KeyManagementSettings=mock_key_mgmt,
-                    save_worker_config=mock_save_worker_config,
-                )
+                "proxy_server": mock_proxy_module,
+                "litellm.proxy.proxy_server": mock_proxy_module,
             },
         ), patch(
             "litellm.proxy.proxy_cli.ProxyInitializationHelpers._get_default_unvicorn_init_args"