Advanced E2E Scripting

End-to-End (E2E) testing is critical for ensuring that applications function as intended from the user's perspective. Advanced E2E scripting involves leveraging tools like Cypress or Playwright to create robust and maintainable test scripts.

• **E2E Testing**: Validates the entire application flow, ensuring integration points work together.
• **Test Automation**: Automates repetitive tasks, improving efficiency and reducing human error.
• **Cypress/Playwright**: Modern testing frameworks that support E2E testing with powerful features and easy setup.

To get started with E2E testing, you’ll need to set up your testing environment.

3.1 Installing Cypress

npm install cypress --save-dev

3.2 Installing Playwright

npm install -D playwright

3.3 Initial Configuration

After installation, initialize the configuration:

npx cypress open

npx playwright install

4.1 Writing Tests

Here is a simple example of a Cypress test:

describe('My First Test', () => {
    it('Does not do much!', () => {
        expect(true).to.equal(true)
    })
})
                

4.2 Page Object Model

Utilize the Page Object Model to enhance maintainability:

// loginPage.js
class LoginPage {
    visit() {
        cy.visit('/login')
    }
    fillEmail(email) {
        cy.get('input[name=email]').type(email)
    }
    fillPassword(password) {
        cy.get('input[name=password]').type(password)
    }
    submit() {
        cy.get('button[type=submit]').click()
    }
}
export default new LoginPage();
                

4.3 Asynchronous Actions

Handle asynchronous actions effectively:

cy.intercept('GET', '/api/users', { fixture: 'users.json' }).as('getUsers');
cy.visit('/users');
cy.wait('@getUsers');
                

4.4 Using Fixtures

Fixtures can be used to manage test data:

cy.fixture('user').then((user) => {
    cy.login(user.email, user.password);
});
                

• Use descriptive test names for better readability.
• Keep tests isolated to prevent dependencies.
• Implement retries for flaky tests.
• Utilize CI/CD pipelines for automated testing.
• Regularly review and refactor test code.