The main benefit of our convention to prefix commits by their corresponding Pivotal Tracker ID is that we can easily...
General hints on the DOM the root of the DOM is document custom elements inherit from HTMLElement. They need a...
When an AJAX request raises an exception on the server, Rails will show a minimal error page with only basic...
webpack is a very powerful asset bundler written in node.js to bundle (ES6) JavaScript modules, stylesheets, images, and other assets...
RubyMine comes with a nice way to grep through your project's files: The finder (ctrl + shift + f). Don't...
Element finding is a central feature of Capybara. Since #find is normally used to get elements from the current page...
The goal is to get Jasmine specs running in a Rails project using Webpacker, with the browser based test runner...
Travis changed their default distribution from Ubuntu 14.04 (trusty) to 16.04 (precise). This might break your test setup for new...
If you get e.g. this error message when you try to run puppet agent: Error: Failed to apply catalog: undefined...
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...
PostCSS is a tool for transforming styles with JS plugins. In Webpacker you can configure the plugins and their settings...
While deploying an Ruby update to an old application these days, we encountered the following misleading error: *** [err :: some-host.makandra.de] You...
When we want to use our own (or bought) fonts in an application with Webpack(er), we have two options...
RSpec >= 3.3 added aggregate_failures, which allows multiple failures in an example and list them all, rather than aborting on...
When building an application that sends e-mails to users, you want to avoid those e-mails from being classified...
Suggested Workflow Set the ruby version in .ruby-version to 2.3.5, then perform these steps one by one, fixing errors...
When your code does not behave as expected, you can use a debugger statement ("breakpoint") at any point in your...
Accessing pseudo elements via JavaScript or jQuery is often painful/impossible. However, accessing their styles is fairly simple. Using getComputedStyle
When you are using lambdas in RSpec to assert certain changes of a call, you know this syntax: expect { playlist.destroy...
Mobile Chrome and Safari support the "web share API" which allow you to use the native share functionality of an...
Geordi uses parallel_tests if available for running the test suite. To debug an application it is very unhandy to...
It is possible to access Rails config (for example secrets) from within your webpack bundles, thanks to rails-erb-loader...
Font Awesome 5 is a comprehensive solution for vector icons on your website. Originally, Font Awesome came as an icon...