feat: Add fork of json-schema-to-zod (no-changelog) (#11228)

packages/@n8n/json-schema-to-zod/test/parsers/parse-one-of.test.ts

@@ -0,0 +1,48 @@
+import { z } from 'zod';
+
+import { parseOneOf } from '../../src/parsers/parse-one-of';
+
+describe('parseOneOf', () => {
+	test('should create a union from two or more schemas', () => {
+		expect(
+			parseOneOf(
+				{
+					oneOf: [
+						{
+							type: 'string',
+						},
+						{ type: 'number' },
+					],
+				},
+				{ path: [], seen: new Map() },
+			),
+		).toMatchZod(
+			z.any().superRefine((x, ctx) => {
+				const schemas = [z.string(), z.number()];
+				const errors = schemas.reduce<z.ZodError[]>(
+					(errors, schema) =>
+						((result) => (result.error ? [...errors, result.error] : errors))(schema.safeParse(x)),
+					[],
+				);
+				if (schemas.length - errors.length !== 1) {
+					ctx.addIssue({
+						path: ctx.path,
+						code: 'invalid_union',
+						unionErrors: errors,
+						message: 'Invalid input: Should pass single schema',
+					});
+				}
+			}),
+		);
+	});
+
+	test('should extract a single schema', () => {
+		expect(parseOneOf({ oneOf: [{ type: 'string' }] }, { path: [], seen: new Map() })).toMatchZod(
+			z.string(),
+		);
+	});
+
+	test('should return z.any() if array is empty', () => {
+		expect(parseOneOf({ oneOf: [] }, { path: [], seen: new Map() })).toMatchZod(z.any());
+	});
+});