In a Jasmine spec you want to spy on a function that is imported by the code under test. This...
We usually rely on VCR and WebMock to prevent any real network connection when running our unit tests.
By default subscript ( ) and superscript ( ) tags are styled with vertical-align: sub, respectively vertical-align: super by most browsers.
You have some SVG files you want to use as icons on your website. How would you embed them?
In esbuild, you usually import other files using relative paths: import './some-related-module' import `../../utils/some-utility-module` import `../../../css/some-css.sass` This is totally fine...
Jasmine specs for the frontend often need some DOM elements to work with. Because creating them is such a common...
Jasmine specs that work with DOM elements often leave elements in the DOM after they're done. This will leak...
If you use third party APT sources you might end up with unmaintained packages after removing the external source or...
You can use ETags to allow clients to use cached responses, if your application would send the same contents as...
Here are a few common patterns that will probably lead to flaky specs. If you notice them in your specs...
tl;dr git checkout is the swiss army of git commands. If you prefer a semantically more meaningful command for...
You have uncommited changes (you can always check by using git status), which you want to discard.
tl;dr In RubyMine you can use find and replace with capture groups (.*?) and backreferences $1 (if you have several...
To allow HTTP 304 responses, Rails offers the fresh_when method for controllers. The most common way is to pass...
When you build a JSON API you need to come up with a style to represent attributes, pagination, errors or...
When working with feature branches, stale branches pile up over time. It's best to remove them right after merge...
The inset CSS property is a shorthand that corresponds to the top, right, bottom, and/or left properties. It has the...
It might sometimes be useful to check whether your Rails application accesses the file system unnecessarily, for example if your...
When you are working with SVG files and ImageMagick you can get different results on different machines depending on which...
The gemspec for gems allows to add metadata to your gem, some of which have a special meaning and are...
ruby-warning adds custom processing for warnings, including the ability to ignore specific warning messages, ignore warnings in specific files/directories...
This card explains how to generate an entity relationship diagram for your Rails application. We also show how to limit...
Sometimes we write plain SQL queries in migrations so we don't have to mock ActiveRecord classes. These two migrations...
You want to deploy new features but the latest commits are not ready for production? Then use git merge master...