import { render, screen } from '@testing-library/react'; import user from '@testing-library/user-event'; import React from 'react'; import { useForm } from 'react-hook-form'; import * as vest from 'vest'; import { vestResolver } from '..'; interface FormData { username: string; password: string; } const validationSuite = vest.create('form', (data: FormData) => { vest.test('username', 'Username is required', () => { vest.enforce(data.username).isNotEmpty(); }); vest.test('password', 'Password must contain a symbol', () => { vest.enforce(data.password).matches(/[^A-Za-z0-9]/); }); }); interface Props { onSubmit: (data: FormData) => void; } function TestComponent({ onSubmit }: Props) { const { register, formState: { errors }, handleSubmit, } = useForm({ resolver: vestResolver(validationSuite), // Useful to check TypeScript regressions }); return (
{errors.username && {errors.username.message}} {errors.password && {errors.password.message}}
); } test("form's validation with Vest and TypeScript's integration", async () => { const handleSubmit = vi.fn(); render(); expect(screen.queryAllByRole('alert')).toHaveLength(0); await user.click(screen.getByText(/submit/i)); expect(screen.getByText(/Username is required/i)).toBeVisible(); expect(screen.getByText(/Password must contain a symbol/i)).toBeVisible(); expect(handleSubmit).not.toHaveBeenCalled(); });