Initial commit: Node-RED MCP server (Python/FastMCP)

22-tool MCP server for Node-RED flow management with Pydantic models,
incremental flow patching, layout linting, and flexible auth (token,
basic, OAuth2). 137 tests, full ruff compliance.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/tools/test_settings.py

@@ -0,0 +1,53 @@
+"""Tests for settings tools."""
+
+import pytest
+
+from nodered_mcp.client import NodeRedClient
+
+
+@pytest.mark.asyncio
+class TestGetSettings:
+    async def test_get_settings(self, mock_client: NodeRedClient) -> None:
+        from nodered_mcp.tools.settings import get_settings
+
+        result = await get_settings.fn()
+
+        # Should return Settings model
+        from nodered_mcp.models.responses import Settings
+        assert isinstance(result, Settings)
+        assert result.http_node_root != ""
+        assert result.version != ""
+        mock_client.get_settings.assert_called_once()
+
+    async def test_get_settings_with_user(self, mock_client: NodeRedClient) -> None:
+        from nodered_mcp.tools.settings import get_settings
+
+        result = await get_settings.fn()
+
+        # User field should be populated from sample data
+        assert result.user is not None
+        assert "username" in result.user
+
+
+@pytest.mark.asyncio
+class TestGetDiagnostics:
+    async def test_get_diagnostics(self, mock_client: NodeRedClient) -> None:
+        from nodered_mcp.tools.settings import get_diagnostics
+
+        result = await get_diagnostics.fn()
+
+        # Should return DiagnosticsResult wrapping data
+        from nodered_mcp.models.responses import DiagnosticsResult
+        assert isinstance(result, DiagnosticsResult)
+        assert isinstance(result.data, dict)
+        assert len(result.data) > 0
+        mock_client.get_diagnostics.assert_called_once()
+
+    async def test_get_diagnostics_preserves_structure(self, mock_client: NodeRedClient) -> None:
+        from nodered_mcp.tools.settings import get_diagnostics
+
+        result = await get_diagnostics.fn()
+
+        # Nested structure from sample_diagnostics_data should be preserved
+        assert "report" in result.data
+        assert "versions" in result.data["report"]