When an Rspec example fails, I usually investigate by running that example again using rspec . However, this does not work...
You are not using javascript tests The file is served from a public folder (not via controller) Problem description...
An end-to-end test (E2E test) is a script that remote-controls a web browser with tools like Selenium...
Slides for Henning's talk on Sep 21st 2017. Understanding sync vs. async control flow Talking to synchronous (or "blocking...
When you want to group rails models of a logical context, namespaces are your friend. However, if you have a...
RSpec allows defining methods inside describe/context blocks which will only exist inside them. However, classes (or any constants, for that...
FactoryBot allows a :class option to its factory definitions, to set the class to construct. However, this option is not...
After loading a staging dump into development, you might get an ActiveRecord::EnvironmentMismatchError when trying to replace the database (like...
When localizing model attributes via I18n you may run into errors like this: I18n::InvalidPluralizationData: translation data {...
...} can not be...
You need to disable "Bluetooth low energy", then follow these core steps: Make sure the headphones are in pairing mode...
Use return to return from a method. return accepts a value that will be the return value of the...
I frequently find myself needing a combination of group_by, count and sort for quick statistics. Here's a method...
before(:all) runs the block once before all of the examples. before(:each) runs the block once before each...
If you want to ssh into your vagrant box without switching into the project directory and typing vagrant ssh, you...
There are many approaches out there how you can import data from a legacy application to a new application. Here...
Scope is all about where something is visible. It’s all about what (variables, constants, methods) is available to you...
You should prefer native promises to jQuery's Deferreds. Native promises are much faster than their jQuery equivalent. Native promises...
Native promises have no methods to inspect their state. You can use the promiseState function below to check whether a...
You can use local copies of gems in your Gemfile like this: gem 'spreewald', path: '~/gems/spreewald' As soon as you...
In the ruby shell (IRB) and rails console the return value of the previous command is saved in _ (underscore). This...
You can not use the hash_including argument matcher with a nested hash: describe 'user' do let(:user) { {id: 1...
When using geordi for integration tests you might get the following error when trying to run geordi cucumber:
You can configure a Ubuntu system as a gateway in order to share it's internet connection (maybe via WLAN...
Capistrano has the concept of a "rollback" that comes in really handy in case of errors. When you notice that...