Parallel or not

This blog post shows how to configure CircleCI to run Cypress in parallel mode for internal branches, while only use a single machine to run Cypress tests for external pull requests.

Cypress is just ...

Cypress allows any developer to fundamentally change how it looks and works, because it is just JavaScript code running inside a browser backed by a Node app.

Cypress jump

Create a React component using JSX and inject it into live application from a Cypress test.


Array, Promise and Maybe monads. Plus Docker is a functor.

How to crash

How to make sure your Express or Koa server correctly sends crashes to exception monitoring service.


Comparing 3rd party assertion libraries expect.js, should.js, etc.