import { render, screen } from '@testing-library/react'; import user from '@testing-library/user-event'; import React from 'react'; import { SubmitHandler, useForm } from 'react-hook-form'; import * as Yup from 'yup'; import { yupResolver } from '..'; const schema = Yup.object({ username: Yup.string().required(), password: Yup.string().required(), }); type FormData = Yup.InferType; interface Props { onSubmit: SubmitHandler; } function TestComponent({ onSubmit }: Props) { const { register, formState: { errors }, handleSubmit, } = useForm({ resolver: yupResolver(schema), // Useful to check TypeScript regressions }); return (
{errors.username && {errors.username.message}} {errors.password && {errors.password.message}}
); } test("form's validation with Yup 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 a required field/i)).toBeInTheDocument(); expect(screen.getByText(/password is a required field/i)).toBeInTheDocument(); expect(handleSubmit).not.toHaveBeenCalled(); });