tl;dr: Use the URLSearchParams API to make your live easier if you want to get or manipulate query parameters...

Due to the way we setup Jasmine tests in our projects, you may run into various errors when Jasmine boots...

This card explains how to generate an entity relationship diagram for your Rails application. We also show how to limit...

Sometimes you will need an input field which wraps content and grows in height as soon as content gets longer...

When the order matters: expect(array1).toEqual(array2) Regardless of order: expect(array1).toEqual(jasmine.arrayWithExactContents(array2)) Ignoring extra elements:

Redis.current will be removed without replacement in redis-rb 5.0. Version 4.6.0 adds deprecation warnings for Redis.current and Redis.current=: `Redis.current...

While we are used to run our JavaScript tests on a test page within our Browser, it's also possible...

I recently was in a weird situation where my (Jest/CLI) tests were referencing a function that was no longer part...

RSpec's let allows you to super into "outside" definitions, in parent contexts. Example: describe '#save' do subject { described_class.new(attributes...

To ensure a consistent code style for JavaScript code, we use ESLint. The workflow is similar to integrating rubocop...

This are the steps I needed to do to add esbuild to an application that used the vanilla rails asset...

AWS ist der meist genutzte Cloud Provider. Bei AWS gibt es extrem viele Themengebiete und es ist nicht möglich sich...

Wir arbeiten bei makandra alle auf Linux-Betriebssystemen und bedienen im DevOps- & Cloud-Bereich primär Kunden, die ebenfalls auf Linux...

Sometimes we write plain SQL queries in migrations so we don't have to mock ActiveRecord classes. These two migrations...

We use foreman to start all necessary processes for an application, which are declared in a Procfile. This is very...

Building application assets with esbuild is the new way to do it, and it's great, especially in combination with...

Attaching files to a field that is handled by Carrierwave uploaders (or maybe any other attachment solution for Rails) in...

You want to deploy new features but the latest commits are not ready for production? Then use git merge master...

When Capybara locates elements in the DOM, by default it allows only accessing visible elements -- when you are using a...

Jasmine is a great tool to unit test your JavaScript components without writing an expensive end-to-end test for...

Resources RubyGuides: Mastering Ruby Regular Expressions Using regular expressions in JavaScript Testing regular expressions visually Regular Expressions: Quantifier modes...

Learn to create test data effectively using factories. Decouple tests by having each test start with an empty database...

JavaScript code can access and manipulate the browser's DOM tree. Using JavaScript we can add interactive behavior to our...

One really simple way to check whether JavaScript Sentry integration was successful (raven-js or @sentry/browser), is to create an...