feat(Summarize Node): Turns error when field not found in items into warning (#11889)

Co-authored-by: Dana Lee <dana@n8n.io>
Co-authored-by: Elias Meire <elias@meire.dev>

packages/nodes-base/nodes/Transform/Summarize/test/unitTests/execute.test.ts

@@ -0,0 +1,80 @@
+import type { MockProxy } from 'jest-mock-extended';
+import { mock } from 'jest-mock-extended';
+import type { IExecuteFunctions } from 'n8n-workflow';
+import { NodeExecutionOutput, NodeOperationError } from 'n8n-workflow';
+
+import { Summarize } from '../../Summarize.node';
+import type { Aggregations } from '../../utils';
+
+let summarizeNode: Summarize;
+let mockExecuteFunctions: MockProxy<IExecuteFunctions>;
+
+describe('Test Summarize Node, execute', () => {
+	beforeEach(() => {
+		summarizeNode = new Summarize();
+		mockExecuteFunctions = mock<IExecuteFunctions>({
+			getNode: jest.fn().mockReturnValue({ name: 'test-node' }),
+			getNodeParameter: jest.fn(),
+			getInputData: jest.fn(),
+			helpers: {
+				constructExecutionMetaData: jest.fn().mockReturnValue([]),
+			},
+		});
+	});
+
+	afterEach(() => {
+		jest.clearAllMocks();
+	});
+
+	it('should handle field not found with hints if version > 1', async () => {
+		mockExecuteFunctions.getInputData.mockReturnValue([{ json: { someField: 1 } }]);
+		mockExecuteFunctions.getNode.mockReturnValue({
+			id: '1',
+			name: 'test-node',
+			type: 'test-type',
+			position: [0, 0],
+			parameters: {},
+			typeVersion: 1.1,
+		});
+		mockExecuteFunctions.getNodeParameter
+			.mockReturnValueOnce({}) // options
+			.mockReturnValueOnce('') // fieldsToSplitBy
+			.mockReturnValueOnce([{ field: 'nonexistentField', aggregation: 'sum' }]); // fieldsToSummarize
+
+		const result = await summarizeNode.execute.call(mockExecuteFunctions);
+
+		expect(result).toBeInstanceOf(NodeExecutionOutput);
+		expect(result).toEqual([[{ json: { sum_nonexistentField: 0 }, pairedItem: [{ item: 0 }] }]]);
+		expect((result as NodeExecutionOutput).getHints()).toEqual([
+			{
+				location: 'outputPane',
+				message: "The field 'nonexistentField' does not exist in any items",
+			},
+		]);
+	});
+
+	it('should throw error if node version is < 1.1 and fields not found', async () => {
+		const items = [{ json: { a: 1, b: 2, c: 3 } }];
+		const aggregations: Aggregations = [
+			{ aggregation: 'sum', field: 'b' },
+			{ aggregation: 'count', field: 'd' },
+		];
+
+		mockExecuteFunctions.getNode.mockReturnValue({
+			id: '1',
+			name: 'test-node',
+			type: 'test-type',
+			position: [0, 0],
+			parameters: {},
+			typeVersion: 1,
+		});
+		mockExecuteFunctions.getInputData.mockReturnValue(items);
+		mockExecuteFunctions.getNodeParameter
+			.mockReturnValueOnce({}) // options
+			.mockReturnValueOnce('') // fieldsToSplitBy
+			.mockReturnValueOnce(aggregations); // fieldsToSummarize
+		await expect(async () => {
+			await summarizeNode.execute.bind(mockExecuteFunctions)();
+		}).rejects.toThrow(NodeOperationError);
+	});
+});