Better world by better software

Gleb Bahmutov PhD

Our planet 🌏 is in danger

Act today: what you can do

Sep 1 2019
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Fix low contrast with Cypress

How to run accessability contrast test against a page to prevent low-contrast problem.

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  • a11y
  • cypress
  • testing
Aug 31 2019
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Filtering Mocha tests

How to filter the collected Mocha unit tests before running them.

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  • testing
Aug 29 2019
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Detect page reload from Cypress test

How to detect from Cypress test when a page reloads using object property assertions.

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  • cypress
Aug 17 2019
climate

Climate Emergency

The planet is burning. What we must do immediately.

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  • climate
Aug 12 2019
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Ariel Rider M-class

Electrical bicycle is a superb mobility device.

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Aug 1 2019
process

How to write end-to-end test using app and api actions

How to bypass user interface when writing end-to-end tests.

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  • cypress
  • testing
Jul 19 2019
process

Black box API testing with server logs

How to perform end-to-end API testing using Cypress test runner and take advantage of server logs.

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  • cypress
  • nodejs
  • testing
Jul 5 2019
process

Capture all the logs

How to capture console.log, console.error and even DEBUG=... logs.

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  • nodejs
  • testing
Jun 20 2019
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Run Cypress included from Docker container

How to test web application running on localhost using Cypress running inside a Docker container

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  • cypress
  • docker
May 21 2019
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End-to-end Testing for Server-Side Rendered Pages

How to validate SSR page using Cypress.io test runner

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  • cypress
  • reactjs
  • testing
May 19 2019
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Combined End-to-end and Unit Test Coverage

How to achieve 100% code coverage by combining end-to-end and unit tests without losing your sanity.

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  • code coverage
  • cypress
  • testing
May 16 2019
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Code Coverage by Parcel Bundler

How to instrument code on the fly using Parcel bundler and collect code coverage during end-to-end tests.

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  • code coverage
  • cypress
  • testing
May 9 2019
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Using TypeScript aliases in Cypress tests

How to configure TypeScript and Webpack path aliases to load application code from Cypress tests

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  • cypress
  • testing
  • typescript
May 6 2019
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Code Coverage for End-to-end Tests

How to instrument application code and collect code coverage during Cypress E2E tests.

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  • code coverage
  • cypress
  • testing
Apr 29 2019
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Stub navigator API in end-to-end tests

How to stub navigator API methods from Cypress E2E test.

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  • cypress
  • testing
Apr 25 2019
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Testing an online chainsaw store using Cypress.io

Drive-by testing www.chainsawsdirect.com using Cypress.io test runner.

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  • cypress
  • testing
Apr 2 2019
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NPM Install with just GitHub

How to share packaged NPM tgz module on GitHub.

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  • git
  • github
  • nodejs
Apr 1 2019
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Readable Cypress.io tests

How to write readable tests using custom commands and custom Chai assertions.

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  • cypress
  • testing
Mar 30 2019
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Testing how an application renders a drawing with Cypress and Percy.io

End-to-end testing a rendered pizza using Cypress.io test runner and image diffing Percy.io plugin.

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  • cypress
  • testing
  • visual testing
Mar 28 2019
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Testing a chart with Cypress and Applitools

End-to-end testing an SVG chart using Cypress.io test runner and image diffing Applitools plugin.

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  • cypress
  • testing
Mar 9 2019
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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.

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  • ci
  • circle
  • cypress
  • cypress dashboard
  • github
Feb 7 2019
process

Zeit Now v2 workflow

A few tips on how to use Zeit Now v2 serverless with TypeScript and a little bit of testing.

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  • cypress
  • typescript
  • vercel
Jan 19 2019
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Use TypeScript With Cypress

Step by step tutorial how to set up TypeScript support in Cypress using WebPack bundler.

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  • cypress
  • typescript
Jan 16 2019
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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.

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  • cypress
Jan 12 2019
people

Don't help me say No

Common mistakes to avoid when applying for a software job. Plus how to get a job if you have no relevant work experience yet.

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  • advice
  • hiring
Jan 2 2019
products

Cypress should callback

Use any assertion inside "should(cb)" function to have Cypress auto-retry its command with your assertion function.

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  • cypress
  • ramda
Dec 29 2018
process

Do not use NODE_ENV for staging

Use a separate environment variable name to avoid NPM tricking you.

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  • nodejs
Dec 19 2018
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E2E Testing json-graphql-server using Cypress

How to test TodoMVC application that uses GraphQL.

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  • graphql
  • testing
Dec 3 2018
process

Functional middleware

How to use Maybe Monad to make your server middleware a little bit easier to reason about.

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  • functional
  • ramda
Nov 19 2018
process

Hyperapp state machine web app

How to write a web application using a state machine and Hyperapp framework.

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  • cypress
  • hyperapp
  • state machine
  • testing
Nov 14 2018
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Element coverage for end-to-end tests

How to see which UI elements the end-to-end tests have interacted with.

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  • cypress
  • testing
Oct 23 2018
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Use GitHub instead of NPM

How to require private NPM modules straight from GitHub without publishing them to NPM.

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  • git
  • github
  • nodejs
Oct 14 2018
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Cypress jump

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

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  • cypress
  • reactjs
Oct 1 2018
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Mocking GraphQL with Lunar in Cypress End-to-End Tests

How to mock GraphQL endpoints using Lunar from Cypress tests.

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  • cypress
  • graphql
  • testing
Sep 27 2018
process

Good logging

How to print from your Node programs in formats compatible with 3rd party logging tools.

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  • nodejs
Sep 18 2018
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Solving JS equality game with Cypress test runner

Using Cypress end-to-end test runner to automate solving JavaScript equality game.

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  • cypress
Sep 7 2018
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Set flag to start tests

How to wait for a slow-starting application to bootstrap before running end-to-end Cypress tests.

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  • cypress
  • testing
Sep 3 2018
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Run and group tests the way you want to

How to load balance multiple Cypress end-to-end tests in parallel mode, or group different tests together and in general control test runs in any way you want.

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  • ci
  • circle
  • cypress
  • cypress dashboard
  • testing
Aug 30 2018
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Should I start with Cypress.io?

Should a person just starting in QA field learn how to use Cypress.io or Selenium.

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  • cypress
  • testing
Aug 27 2018
process

Mocking process.env

How to quickly mock process.env during unit testing.

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  • testing
Aug 10 2018
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Zeit Now GitHub app + Renovate app + Cypress tests = 💝

How Cypress, Zeit Now GitHub app and Renovate app play well together to give you well tested PRs and keep your dependencies up to date with zero effort.

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  • cypress
  • github
  • renovate
  • testing
  • vercel
Aug 3 2018
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Carriage return

Carriage return character, progress bar and progressive enhancement.

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  • docker
  • nodejs
Jun 29 2018
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Gatsby Netlify Circle and Cypress

How to test Gatsby static blog locally, on Netlify before deploying, and after deployment using Circle.

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  • ci
  • circle
  • cypress
  • immutable
  • netlify
Jun 27 2018
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Incredibly Powerful cy.task

How to run any Node code from your end-to-end Cypress tests using `cy.task` command.

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  • cypress
Jun 25 2018
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Rolling for a Test

How to bundle individual components using Rollup for each Cypress test

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  • cypress
  • hyperapp
Jun 24 2018
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Tested live documentation is a thing with MDX, Docz and Cypress

You can quickly write live interactive component documentation and make sure it works as expected by testing it.

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  • cypress
  • documentation
Jun 15 2018
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Trying GraphQL

Starting with GraphQL - from zero to hero.

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  • graphql
  • tutorial
Apr 28 2018
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Trying Redis

Playing with remote Redis service for quick caching.

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  • db
  • tutorial
Apr 23 2018
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VuePress and some Cypress end-to-end testing tips

Using DOM snapshot to catch a disappearing element plus sharing application config.

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  • cypress
  • testing
  • vuejs
Apr 7 2018
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Lock Down Sinon Stub

How to ensure your stubs are not called with unexpected arguments.

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  • testing
Mar 24 2018
process

How I Organize README

Must have sections, badges, flow.

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  • advice
Mar 14 2018
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Painless Dependency Upgrades with Renovate App

Flexible and powerful automatic dependency upgrades for NPM packages.

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  • modular development
  • renovate
  • testing
Mar 12 2018
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Debugging Mocha from Node using Chrome Inspector

How to debug Mocha tests running in Node using Chrome DevTools inspector.

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  • browser
  • nodejs
Mar 3 2018
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Subfolders as Dependencies

Use subfolders installed as NPM dependencies to avoid long relative paths in require.

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  • nodejs
Feb 13 2018
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Parcel Bundler

A quick look at the new bundler.

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  • javascript
Jan 15 2018
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Use Lenses in Hyperapp

You can shorted your state mutations by using functional lenses.

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  • hyperapp
  • ramda
Jan 14 2018
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Testing ES6 Module in Cypress Electron Browser

Adding support to script type=module while testing Hyperapp as ES6 module.

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  • cypress
  • es6
  • hyperapp
Jan 8 2018
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Drive-by Testing Array Explorer

Step by step end-to-end testing project "array-explorer".

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  • cypress
  • testing
  • vuejs
Jan 7 2018
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Testing Vue CLI reload

Testing dev server hot reload using Cypress.

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  • cypress
  • testing
  • vuejs
Jan 5 2018
process

Quick functional refactoring

Quickly stringing data transformation using standard Ramda functions.

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  • functional
  • ramda
Dec 21 2017
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JSON schema for the win

How to get IntelliSense help for your JSON files in modern IDEs.

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  • cypress
Dec 19 2017

Sync callbacks

Do not think every callbacks is sync or async.

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  • javascript
Dec 13 2017
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Split CI Jobs

How to execute multiple test tasks in parallel on CircleCI and TravisCI.

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  • ci
Nov 26 2017
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Testing Svelte Store

Writing E2E tests for Svelte.js app store using Cypress.

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  • cypress
  • testing
Nov 20 2017
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Vue Vuex REST TodoMVC example

Small example of TodoMVC implemented using Vue.js and Vuex data store against REST backend.

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  • vuejs
Nov 18 2017
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Making small Docker image

How to make a very small Docker image with a Node application.

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  • docker
Nov 7 2017
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Local overrides

How to see a customized version of any website locally.

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  • browser
Sep 28 2017
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DevOps Testing Panel

Notes from DevOps meetup panel on testing.

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  • testing
Sep 8 2017
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Test Runners

Interesting ideas in JavaScript test runners.

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  • testing
Aug 30 2017
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Tests, closures and arrow functions

Using Mocha test context and its pitfalls.

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  • testing
Aug 18 2017
process

Semantic Action

Perform any action based on commits since last action.

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  • ci
  • git
  • modular development
Aug 17 2017
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Use a little bit of FP

A few examples of introducing functional programming into existing code.

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  • functional
  • ramda
Aug 16 2017
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Slow updates

Automatic period dependency update without much hassle.

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  • modular development
Aug 15 2017
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Kliesli composition

Connecting Kliesli compositions or the advantages of good pipe insulation.

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  • functional
  • ramda
Aug 7 2017
process

Releasing for old Node

How I publish modules for older versions of Node.

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  • nodejs
Aug 4 2017
process

SSH Deploy from CI

How to deploy to GitHub pages from CI using SSH to authenticate.

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  • ci
Aug 3 2017
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Quick and dirty CURL use

Quickly run complex HTTP requests from terminal.

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  • advice
Aug 2 2017
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Linters Gonna Lint

Incremental lint, Prettier, immutable rules.

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  • javascript
Jul 22 2017
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I can see clearly now

Using functional lenses to modify objects by example.

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  • functional
  • ramda
Jul 18 2017
process

Mocking vs Refactoring

Sometimes code refactoring removes need for advanced mocking in tests.

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  • testing
Jul 13 2017
process

Mock system APIs

Do not mock your internal modules, mock system APIs instead!

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  • testing
Jul 12 2017
process

Quick Solid NPM Module

Setting up a rock solid NPM module with semantic release in 30 seconds.

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  • advice
  • modular development
  • nodejs
Jun 19 2017
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Rocha and Focha

Randomize tests and run previously failed ones first for speed.

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  • testing
Jun 11 2017
people

VP of Success

How a new VP should be judged.

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Jun 5 2017
process

How To Draw An Owl

Refactor code using functional approach (Maybe, immutable).

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  • functional
  • ramda
Jun 1 2017
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Docker User

Use non-root user inside Docker container.

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  • docker
May 4 2017
process

Data Coverage

Collecting all inputs to each function to figure out missing test data.

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  • code coverage
  • testing
May 2 2017
process

Deriving Y Combinator

Deriving Y Combinator that makes recursive functions without assignments possible.

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  • functional
Apr 28 2017
people

Worst Code I Have Written Lately

A self-critique of my own code as a poster for the office.

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Apr 19 2017
products

Picking snapshot library

How to pick the right JavaScript snapshot testing library.

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  • testing
Apr 14 2017
process

Ramda for reactive streams

Array or Observable - Ramda can do both!

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  • functional
  • ramda
  • reactive
Apr 11 2017
products

The intuition behind applicative

Why would you want a function in a box?

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  • functional
Apr 10 2017
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Rolled libraries

How to distribute a tree-shaken library for your tree-shaken apps using Rollup.

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  • javascript
Apr 7 2017
process

Tested Curl

How to ensure your Curl code snippets are working, plus generate documentation.

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  • testing
Apr 6 2017
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Async functions in Service Workers

Use async / await in ServiceWorker code because browsers support both.

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  • service workers
Apr 3 2017
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URL type using TypeScript or FP

How to enforce a custom condition on a string.

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  • functional
  • typescript
Apr 2 2017
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Web app routing with fallback

How to use fallback with client-side routing to avoid 404 pages.

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  • browser
  • hyperapp
Mar 29 2017
process

Testing Trapezoid

Replacement for testing pyramid.

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  • advice
  • testing
Mar 26 2017
process

Fixing the Internet one NPM package at a time

How to patch a bug, use the fix in prod and submit the pull request in five minutes.

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  • modular development
  • nodejs
Mar 25 2017
products

Web Packing the Internet

WebPack as a service for quick personal projects and examples.

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  • browser
  • cyclejs
  • hyperapp
  • immutable
  • webpack
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Recents

  • Using Test Ids To Pick Cypress Specs To Run
  • 10 Years Of Blogging
  • Electric Heat Pumps
  • Upload Your Images To Cypress Cloud
  • Use Async Await In Cypress Specs
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