Mocking GraphQL for unit tests with Cypress

Unit testing GraphQL with Cypress

Cypress is great for front end mocking. Its purpose built for this with Promises in mind.Most commonly, cy.intercept is used for this.Eg.:cy.intercept(‘POST’, ‘/your-backend-api’, {}).as(‘backendAPI’);

cy.wait('@backendAPI').then(xhr => {

  expect(xhr.response.statusCode).to.equal(404);
});

Cypress Documentation

Network Requests | Cypress Documentation

What you’ll learn How Cypress enables you to stub out the back end with cy.intercept() What tradeoffs we make when we stub our network requests.

https://docs.cypress.io/guides/guides/network-requests

Examples for GraphQL

Cypress Documentation

Working with GraphQL | Cypress Documentation

What you’ll learn Best practices to alias multiple GraphQL queries or mutations for a group of tests. Overriding an existing intercept to modify‚Ķ

https://docs.cypress.io/guides/testing-strategies/working-with-graphql

Unit Testing

For an example in .net, we can rely on something like Nunit combined wth Rest Sharp to get our GraphQL service tested.

Rest sharp is really just an option for us to make that REST call

you can use any other

Nunit, its just our assertion library, you can use any other here as well

Java based?

Well using RestTemplates and Junit would do great as basic tools.

Using Native GraphQL

Its best to try and work directly with these components.

https://www.graphql-tools.com/docs/mocking
https://graphql.org/blog/mocking-with-graphql/

Manage your software delivery like a boss

Introduction

Over the past then years that I’ve been in the industry, I have been fortunate enough to bear witness to the beautiful way software delivery methods have evolved.

From long lasting design of monoliths to quick and in some cases, daily deploys of micro-services, we have come a long long way but our journey is not done. 

Today, we’re moving faster than ever into cloud, serverless, containers and SaaS.  

The Revolution

The key to this revolution was communication. There is indeed, strength in numbers. 

Knowing that we were not struggling alone. That our issues were not unique and that others solved them was comforting, motivating and enlightened us.

The Bitter Truth

We all became students and masters at the same time. We read, research, learn insatiably. GIVE ME ALL THE KNOWLEDGES! 

Learning how to do things better,

Learning how others found success in similar situations! YAS!

We’re amped! We’re pumped, we try it out and its going to be amazing…and it fails!

Its hard…its not working…its taking longer than expected.

wait.. what?!

What just happened

Variables. Life just happened. It sucks, but its a lesson that was always yours…waiting for just you.

Project Risk

As a lead, take careful consideration of your projects strength and weaknesses.

These Risks will surely impact your delivery. 

Focus on quality early

With the introduction of micro-services, we have seen testing get pushed left.

Like into the bush and we forget about it?  Erhm…NO.

By pushing testing left, we attempt to push the top tiers of the pyramid down.

So an example here would be, refining our system tests to pose as integration tests instead. 

The goal of this concept has always been the same, faster feedback.

TIP: Dont get bogged down by the concept but rather focus on the goal, shift can happen in both directions.

Have a repeatable game plan

Build a vision for delivery with your team.

Understand each move your people and software makes and draw a picture. 

Create flow diagrams and maintain this as you and the team grows…making it your own and not an internet copy and paste.

Most of the time, everything you read will be wrong for you. OMG… 

I just mean that when we read something, most of the time we dont have the full picture. The new start in your team or the exit of an old soul will dramatically change how you deliver.  Shift and adapt with it.

TIP: Dont forget to address your delivery process often! 

Below is an example and a good head start for you to build and share your flow. Make it your own!

Conclusion

As you forge forward in your ambitions to delivery high quality software sooner, build a plan that is lean but high value to your team.

  • Use tools wisely,
  • Use other’s learnings and suggestions sparingly