ReactのJestのテストでuseStateを使用する方法 - Qiita

import React, { useState as useStateMock } from 'react'; import TestRender from 'react-test-renderer'; jest.mock('react', () => ({ ...jest.requireActual('react'), useState: jest.fn(), })); describe('Snapshot test', () => { const setState = jest.fn(); beforeEach(() => { (useStateMock as jest.Mock).mockImplementation(init => [init, setState]); }); test('test case 1', () => { const [open, setOpen] =