Add CI code and logic to validate flows

lib/n8n_utils/tests/test_workflow_validation.py

@@ -0,0 +1,79 @@
+"""Tests for n8n workflow validation."""
+import json
+import os
+import tempfile
+import unittest
+from pathlib import Path
+
+from n8n_utils.ci.validator import validate_workflow, ValidationError
+
+class TestWorkflowValidation(unittest.TestCase):
+    """Test cases for workflow validation."""
+    
+    def setUp(self):
+        """Set up test fixtures."""
+        self.valid_workflow = {
+            "name": "Test Workflow",
+            "nodes": [
+                {
+                    "id": "1",
+                    "name": "Start",
+                    "type": "n8n-nodes-base.start",
+                    "typeVersion": 1,
+                    "position": [250, 300],
+                    "parameters": {}
+                },
+                {
+                    "id": "2",
+                    "name": "HTTP Request",
+                    "type": "n8n-nodes-base.httpRequest",
+                    "typeVersion": 1,
+                    "position": [450, 300],
+                    "parameters": {
+                        "url": "https://example.com",
+                        "method": "GET"
+                    }
+                }
+            ],
+            "connections": {
+                "1": {
+                    "main": [
+                        [
+                            {
+                                "node": "2",
+                                "type": "main",
+                                "index": 0
+                            }
+                        ]
+                    ]
+                }
+            }
+        }
+    
+    def test_valid_workflow(self):
+        """Test validation of a valid workflow."""
+        errors = validate_workflow(self.valid_workflow)
+        self.assertEqual(len(errors), 0)
+    
+    def test_missing_required_field(self):
+        """Test validation of a workflow with a missing required field."""
+        # Remove a required field
+        invalid_workflow = self.valid_workflow.copy()
+        del invalid_workflow["nodes"][0]["id"]
+        
+        errors = validate_workflow(invalid_workflow)
+        self.assertGreater(len(errors), 0)
+        self.assertIn("id", errors[0])
+    
+    def test_invalid_node_structure(self):
+        """Test validation of a workflow with invalid node structure."""
+        invalid_workflow = self.valid_workflow.copy()
+        # Make position an invalid type
+        invalid_workflow["nodes"][0]["position"] = "not an array"
+        
+        errors = validate_workflow(invalid_workflow)
+        self.assertGreater(len(errors), 0)
+        self.assertIn("position", errors[0])
+
+if __name__ == "__main__":
+    unittest.main()