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x/zod/__tests__/optional.test.ts

TypeScript-first schema validation with static type inference
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// @ts-ignore TS6133import { expect } from "https://deno.land/x/expect@v0.2.6/mod.ts";const test = Deno.test;
import * as z from "../index.ts";
function checkErrors(a: z.ZodTypeAny, bad: any) { let expected; try { a.parse(bad); } catch (error) { expected = (error as z.ZodError).formErrors; } try { a.optional().parse(bad); } catch (error) { expect((error as z.ZodError).formErrors).toEqual(expected); }}
test("Should have error messages appropriate for the underlying type", () => { checkErrors(z.string().min(2), 1); z.string().min(2).optional().parse(undefined); checkErrors(z.number().gte(2), 1); z.number().gte(2).optional().parse(undefined); checkErrors(z.boolean(), ""); z.boolean().optional().parse(undefined); checkErrors(z.undefined(), null); z.undefined().optional().parse(undefined); checkErrors(z.null(), {}); z.null().optional().parse(undefined); checkErrors(z.object({}), 1); z.object({}).optional().parse(undefined); checkErrors(z.tuple([]), 1); z.tuple([]).optional().parse(undefined); checkErrors(z.unknown(), 1); z.unknown().optional().parse(undefined);});
test("unwrap", () => { const unwrapped = z.string().optional().unwrap(); expect(unwrapped).toBeInstanceOf(z.ZodString);});