RSpec's let allows you to super into "outside" definitions, in parent contexts. Example: describe '#save' do subject { described_class.new(attributes...
A flaky test is a test that is often green, but sometimes red. It may only fail on some PCs...
When testing JavaScript functionality in Selenium (E2E), you may need to access a class or function inside of a evaluate...
https://tableconvert.com/ is an online tool to convert tables between different formats (e.g. json, markdown, csv).
The pages […] allow you to see different types of mixed content and test how they behave in your browser. The...
When testing with Cucumber / Caypbara, iframes are ignored, so you can't interact with them. To interact with your iframe...
FactoryBot allows to create traits from Enums since version 6.0.0 The automatic definition of traits for Active Record enum attributes...
Select2 is a fantastic library for advanced dropdown boxes, but it depends on jQuery. Alternatives Tom Select
If you render markdown from user input, an attacker might be able to use this to inject javascript code into...
When an event listener on a DOM element throws an error, that error will be silenced and not interrupt your...
Test-Driven Development (TDD) in its most dogmatic form (red-green-refactor in micro-iterations) can be tedious. It does...
If you need to test some HTML, e.g. an embed code, you can use RubyMine's "scratch files":
Debugging image color profiles is hard. You can't trust your eyes in this matter, as the image rendering depends...
ActiveSupport (since 4.1) includes test helpers to manipulate time, just like the Timecop gem: To freeze the current time, use...
In Ruby on Rails, all objects have a useful blank? method. It returns true for nil but also for empty...
Not all versions of Node.js are compatible with each other. Also npm packages may require a minimum or maximum version...
Download buttons can be difficult to test, especially with Selenium. Depending on browser, user settings and response headers, one of...
TL;DR Most web applications do not require action on this. SameSite=None (old browser default) will continue to work...
Was ist Elastic? Suchmaschine, basierend auf Apache Lucene größtenteils Open-Source einige kommerzielle Features ("Elastic Stack", früher "X-Pack") Zugriffsrechte...
RSpec >= 3.3 added aggregate_failures, which allows multiple failures in an example and list them all, rather than aborting on...
This is a presentation from 2019-01-21. Summary We want to move away from jQuery in future projects
For Sidekiq to be able to retry your jobs it has to be able to catch errors that occur while...
Migrating data from a legacy into a new system can be a surprisingly large undertaking. We have done this a...
At makandra, we've built a few gems over the years. Some of these are quite popular: spreewald (> 1M downloads...