45 lines
1.3 KiB
Markdown
45 lines
1.3 KiB
Markdown
# Step 2: Add E2E Tests
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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 not a great example of an E2E test, but it will suffice for the purposes of this tutorial.
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If you have not done so already, stop the `nx serve` command and run `nx e2e todos-e2e --watch`.
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A UI will open. Click the button in the top right corner that says "Run all specs". Keep the E2E tests running.
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As you progress through the tutorial, you will work on making these E2E tests pass.
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!!!!!
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What assertion fails?
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!!!!!
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Expect 0 to equal 2
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Nothing fails. Everything works.
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Cannot find any elements matching 'li.todo'
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Cannot find any elements matching 'button#add-todo'
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