feat: Add AI Error Debugging using OpenAI (#8805)

packages/cli/test/unit/controllers/ai.controller.test.ts

@@ -0,0 +1,42 @@
+import { Container } from 'typedi';
+import { mock } from 'jest-mock-extended';
+import { mockInstance } from '../../shared/mocking';
+import { AIService } from '@/services/ai.service';
+import { AIController } from '@/controllers/ai.controller';
+import type { AIRequest } from '@/requests';
+import type { INode, INodeType } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
+import { NodeTypes } from '@/NodeTypes';
+
+describe('AIController', () => {
+	const aiService = mockInstance(AIService);
+	const nodeTypesService = mockInstance(NodeTypes);
+	const controller = Container.get(AIController);
+
+	describe('debugError', () => {
+		it('should retrieve nodeType based on error and call aiService.debugError', async () => {
+			const nodeType = {
+				description: {},
+			} as INodeType;
+			const error = new NodeOperationError(
+				{
+					type: 'n8n-nodes-base.error',
+					typeVersion: 1,
+				} as INode,
+				'Error message',
+			);
+
+			const req = mock<AIRequest.DebugError>({
+				body: {
+					error,
+				},
+			});
+
+			nodeTypesService.getByNameAndVersion.mockReturnValue(nodeType);
+
+			await controller.debugError(req);
+
+			expect(aiService.debugError).toHaveBeenCalledWith(error, nodeType);
+		});
+	});
+});