...URL, which can lead to errors when you have absolute URLs in your Cucumber tests. If you really need to use absolute URLs somewhere, say in an email you send...
Single step and slow motion for Cucumber scenarios can come in handy, especially in @javascript scenarios. # features/support/examiners.rb AfterStep('@slow_motion...
Mornings can be rough. To make them a little easier, leave yourself a failing test if your work isn’t finished. When you come back to the project, it makes...
When you are scrolling up to investigate a test failure it is super annoying when the terminal scrolls back down whenever the running test outputs another line. Luckily you can...
CarrierWave comes with some RSpec matchers which will make testing more comfortable. Let's say you have an Uploader like this: class MyUploader < CarrierWave::Uploader::Base include CarrierWave::MiniMagick
...a class Movie with an attribute poster. In your spec file, you can add tests to check the dimensions of the several versions by writing RSpec.describe Movie, type: :model do...
The pages listed here contain tests and experiments about features, possibilities, browsers’ bugs concerning CSS. That is, over 200 experiments...
This note describes a Cucumber step definition that lets you test whether or not a CSS selector is present on the site: Then I should see an element "#sign_in...
Fix missing require for Fileutils in the dump load command (#145) Document PARALLEL_TEST_PROCESSORS
One of many useful techniques when your test suite needs to talk to a remote API...
...x86_64 -cdrom filename.iso If you prepared a USB pen drive and want to test it, run it like this (/dev/sdx being your device name; you may need to sudo...
...to config/initializers.rb. In the same initializer, type a line: Undebug.trace_message('foobar') Now run tests or whatever you need to do to to trigger that message. The console output should...
In order to go back one page in your Cucumber tests, you can use the following step definition for Capybara: When(/^I go back$/) do visit page.driver.request.env['HTTP_REFERER']
...scrollbars ? '==' : '!=' scroll_height.should.send(comparison, offset_height) end This should respect padding. However, I have not tested if margins have an effect on it...
The linked site hosts a simple test. It shows two images with narrow vertical/horizontal lines. The more they resemble each other, the more Retina your display is...
...the usual notification rules, i.e. you won't get anything in the development or test environments. Obiously, this only works with tasks that actually depend on :environment...
...authorized users only 3. Using the same storage folder for multiple Rails environments or test processes This one affects your developers. If an image with ID 4 always ends up...
...as public/system/images/4.jpg, multiple Rails environments (e.g. development and test) will randomly see and overwrite each other's files. See Always store your Paperclip attachments in a separate folder per environment...
...so it should be a drop-in replacement for all your projects. For Rack::Test the step no longer uses XPath so you should be able to understand it when...
RSpec 1 (Rails 2) With the most recent spec_candy.rb helpers you can say: User.stub_any_instance(:foo => :bar) user = User.new...
In most of our applications, users have their first and last name stored in separate columns. However, specifying them separately...
Talking with APIs makes more fun using Postman. As an alternative you can also use command line tools like cURL...
Updated the card with our current best practice (shared app code and specs via symlinks).
Sometimes you need to look at the filter chain in specs. You can do it like that on Rails 2...
In the tradition of our PostgreSQL cheat sheet for MySQL lamers, here is a cheat sheet for Jasmine when you...
...pack is application.js): = image_pack_tag('media/application/images/logo.png') Deployment Follow Configuring Webpacker deployments with Capistrano. Tests In your cucumber test, you will want to regenerate your assets before each test suite...
...run. Since this is a bit slow, especially when using multiple processes with parallel_test, read this card. jQuery If you still require jQuery, add it to your webpacker project...