refactor(core): Move copyInputItems to node helpers (no-changelog) (#7299)

packages/core/test/NodeExecuteFunctions.test.ts

@@ -1,4 +1,5 @@
 import {
+	copyInputItems,
 	getBinaryDataBuffer,
 	parseIncomingMessage,
 	proxyRequestToAxios,
@@ -297,4 +298,52 @@ describe('NodeExecuteFunctions', () => {
 			]);
 		});
 	});
+
+	describe('copyInputItems', () => {
+		it('should pick only selected properties', () => {
+			const output = copyInputItems(
+				[
+					{
+						json: {
+							a: 1,
+							b: true,
+							c: {},
+						},
+					},
+				],
+				['a'],
+			);
+			expect(output).toEqual([{ a: 1 }]);
+		});
+
+		it('should convert undefined to null', () => {
+			const output = copyInputItems(
+				[
+					{
+						json: {
+							a: undefined,
+						},
+					},
+				],
+				['a'],
+			);
+			expect(output).toEqual([{ a: null }]);
+		});
+
+		it('should clone objects', () => {
+			const input = {
+				a: { b: 5 },
+			};
+			const output = copyInputItems(
+				[
+					{
+						json: input,
+					},
+				],
+				['a'],
+			);
+			expect(output[0].a).toEqual(input.a);
+			expect(output[0].a === input.a).toEqual(false);
+		});
+	});
 });