43 lines
1.5 KiB
Markdown
43 lines
1.5 KiB
Markdown
# React Nx Tutorial - Step 2: Add E2E Tests
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<iframe loading="lazy" width="560" height="315" src="https://www.youtube.com/embed/3HSzqt3WiVg" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture; fullscreen"></iframe>
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By default, Nx uses [Cypress](https://cypress.io) to run E2E tests.
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Open **`apps/todos-e2e/src/support/app.po.ts`.** It's a page object file that contains helpers for querying the page.
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**Add the following two helpers:**
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```typescript
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export const getTodos = () => cy.get('li.todo');
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export const getAddTodoButton = () => cy.get('button#add-todo');
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```
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**Next, update `apps/todos-e2e/src/integration/app.spec.ts`.**
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```typescript
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import { getAddTodoButton, getTodos } from '../support/app.po';
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describe('TodoApps', () => {
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beforeEach(() => cy.visit('/'));
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it('should display todos', () => {
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getTodos().should((t) => expect(t.length).equal(2));
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getAddTodoButton().click();
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getTodos().should((t) => expect(t.length).equal(3));
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});
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});
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```
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This is a simple example of an E2E test, only to verify the todos are displayed correctly.
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If you have not done so already, stop the `npx nx serve` command and run `npx nx e2e todos-e2e --watch`.
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A UI opens. Click the button on the right side that says "Run 1 integration spec". Keep the E2E tests running.
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As you progress through the tutorial, you work on making these E2E tests pass.
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## What's Next
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- Continue to [Step 3: Display Todos](/react-tutorial/03-display-todos)
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