Marie Drake
Marie is a Test Automation Engineer and also a tech blogger at mariedrake.com where she talks about testing and test automation in general.
API testing with Cypress
Marie Drake, Principal Test Automation Engineer @ News UK
Cypress recap
- Great tool for end-to-end automated testing
- Growing in popularity among the JavaScript community
- Automating a Todo App (https://github.com/mdcruz/cypress-demo-todo)
First Cypress Test
/// <reference types="cypress" />
describe('TodoApp', () => {
it('should add a new todo successfully', () => {
cy.visit('/');
cy.get('.new-todo').as('addTodo');
cy.get('@addTodo').type('do lunch and learn about Cypress {enter}');
cy.get('@addTodo').type('have lunch {enter}');
cy.get('.todo-list').find('li').should('have.length', 2);
cy.getFirstTodoItem().should(
'be.equal',
'do lunch and learn about Cypress'
);
});
});
Cypress Test Runner
Now.. let's talk about API testing
API Testing Tools
- Postman
- Newman
- Supertest
- Chai-HTTP
- Rest Assured
- Karate
- ... and so much more
Title Text
What if we have 1 tool for both UI and API test automation?
Cypress to the rescue!
Cypress to the rescue!
Advantages of using Cypress to test your APIs
- Built in support
- Easy debugging (no more console logs!)
- Revisit your API state via Cypress test runner - time travel
- Skills easy to transfer since we are only using 1 tool
- More buy-in to get developers involve with testing
cy.request()
cy.request(url)
cy.request(url, body)
cy.request(method, url)
cy.request(method, url, body)
cy.request(options)First API test
/// <reference types="cypress" />
describe('Todo API', () => {
it('returns a JSON data', () => {
cy.request('/todos')
.its('headers')
.its('content-type')
.should('include', 'application/json');
});
});
Make a GET request to /todos API endpoint
Check its headers
On the header, check its content type
Assert that it returns a JSON data
Additional Resources
Any questions?
API testing with Cypress
By Marie Drake
API testing with Cypress
Cypress was originally created to cater the needs of front end developers so they can test their applications easily. However, Cypress is more than that. In this session, we'll look at how we can use Cypress to do API testing.
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