tl;dr Prefer request specs over end-to-end tests (Capybara) to joyfully test file downloads! Why? Testing file downloads
You can chain multiple Capybara matchers on the page or any element: expect(page) .to have_content('Example Course')
A common cause of non-accessible web pages are elements that were made interactive via JavaScript but cannot be focused...
The Web Animations API has great browser support, and you should be using it to animate DOM elements from JavaScript...
Today I stumbled across a pretty harmless-looking query in our application which turned out to be pretty harmful and...
Any form fields where users enter numbers should be an . Numeric inputs have several benefits over : On mobile or tablet...
tl;dr We recommend configuring Selenium's unhandled prompt behavior to "ignore". When running tests in a real browser, we...
A Rails script lives in lib/scripts and is run with bin/rails runner lib/scripts/.... They are a simple tool to perform...
Today I learned that you can animate HTML elements using the Web Animation API's method .animate(keyframes, options) (which...
Multiply by 1x the unit: $number = 13 $length = $number * 1px // => 13px Removing a unit
You can use the config.x configuration in combination with config_for to configure global settings for your Rails 4.2+ application...
RubyMine has a collaboration feature called "Code With Me". Using it, you can invite someone into your local editor to...
You can ignore certain commits when using git blame with the --ignore-revs-file option. This is handy to ignore...
Getting an entire test suite green can be a tedious task which involves frequent switches between the CLI that is...
In the Gitlab settings the flag Auto-cancel redundant pipelines is enabled by default. This auto-cancels jobs that have...
#pluck is commonly used as a performant way to retain single database values from an ActiveRecord::Relation Book.pluck(:title, :price...
Ruby has the class Rational which allows you to store exact fractions. Any calculation on these variables will now use...
Every modern Rails app should have a Content Security Policy enabled. Very compatible default The following "default" is a minimal...
All direct child directories of app are automatically added to the eager- and autoload paths. They do NOT create a...
TLDR Using .includes or .eager_load with 1-n associations is dangerous. Always use .preload instead. Consider the following ActiveRecord...
Given you have an array column like this: create_table "users", force: :cascade do |t| t.integer "movie_ids", default: [], array...
We regularly have tasks that need to be performed around a deploy. Be it to notify operations about changed application...
Both knapsack and parallel_tests have the option to split groups by historic execution time. The required logs for this...
There are multiple ways to redirect URLs to a different URL in Rails, and they differ in small but important...