Luca Micieli

Advanced Cypress: custom assertions and tasks

Bypass slow and flaky UI interactions in your Cypress tests. Use tasks to directly seed your database, read files, and even handle complex OAuth authentication flows.

Advanced Cypress: custom assertions and tasks
#1about 2 minutes

Understanding the Cypress architecture and tasks

Cypress runs in two processes, and tasks act as remote procedure calls to execute Node.js code from within the browser-based test environment.

#2about 3 minutes

Using tasks for database seeding and auth flows

Tasks enable complex test setups like seeding a database, accessing the file system for email links, or controlling a separate window for OAuth authentication.

#3about 2 minutes

Creating type-safe custom assertions with Chai

Extend the Chai assertion library to create custom assertions and use TypeScript declaration merging to provide type safety for your new commands.

#4about 2 minutes

Applying custom assertions for robust UI tests

Use custom assertions to handle dynamic content like translated text or localized dates, making tests more resilient to content changes.

Related jobs
Jobs that call for the skills explored in this talk.

Remote

Name of

Name of

Remote
Intermediate
PHP
Java
+1

Matching moments

Introduction to end-to-end testing with Cypress
05:13 MIN

Introduction to end-to-end testing with Cypress

Testing web3 applications

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Understanding end-to-end testing and the benefits of Cypress
03:54 MIN

Understanding end-to-end testing and the benefits of Cypress

Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Adding assertions and debugging failing tests in Cypress
05:55 MIN

Adding assertions and debugging failing tests in Cypress

Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Installing Cypress and structuring tests with Arrange-Act-Assert
09:14 MIN

Installing Cypress and structuring tests with Arrange-Act-Assert

Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Playwright's dominance and the expansion of E2E tools
03:01 MIN

Playwright's dominance and the expansion of E2E tools

The 2025 State of JavaScript Testing

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Q&A on mocking responses and advanced test patterns
09:50 MIN

Q&A on mocking responses and advanced test patterns

Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Q&A on scaling tests and choosing frameworks
16:15 MIN

Q&A on scaling tests and choosing frameworks

Let's get visual - Visual testing in your project

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.
Q&A on Puppeteer vs Cypress and cloud deployment
08:43 MIN

Q&A on Puppeteer vs Cypress and cloud deployment

Automate everything via NodeJS and Puppeteer

Unlock Moments
Create a free account to watch a limited number of Moments each month.
Upgrade to PRO for unlimited access to the full archive.

Featured Partners

Related Videos

See all videos
Testing web3 applications53:58

Testing web3 applications

Soumaya Erradi

Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS53:45

Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS

Anna McDougall

The 2025 State of JavaScript Testing28:33

The 2025 State of JavaScript Testing

Daniel Afonso

Let's get visual - Visual testing in your project44:59

Let's get visual - Visual testing in your project

Ramona Schwering

Let's get visual - Visual testing in your project54:23

Let's get visual - Visual testing in your project

Ramona Schwering

Measure and improve frontend performance by using test automation25:38

Measure and improve frontend performance by using test automation

Ramona Schwering

Plants vs. Thieves: Automated Tests in the World of Web Security24:09

Plants vs. Thieves: Automated Tests in the World of Web Security

Ramona Schwering

Fighting test flakiness with time machines50:28

Fighting test flakiness with time machines

Filip Hric

Related Articles

View all articles
SD
Sabina Dapo
New Test
The basic purpose of narrative is to entertain, to gain and hold readers’ interest. However narratives can also be written to teach or inform, to change attitudes / social opinions e.g. soap operas and television dramas that are used to raise topical...
New Test
EM
Eli McGarvie
13 AI Tools You Have to Try
First, it was NFTs, then it was Web3, and now it’s generative AI… it’s probably time to stop collecting pictures of monkeys and kitties. Chatbots and generative AI are the next big thing. This time we’ve jumped on a trend that has real-world applicat...
13 AI Tools You Have to Try

From learning to earning

Jobs that call for the skills explored in this talk.

Senior QA Engineer

Senior QA Engineer

CheckYeti
Vienna, Austria

Senior
Selenium
JavaScript
Manual Testing
Automated Testing