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This can make test problems easier to troubleshoot than when test values are simply random strings like c1f83cef2d1f74f77b88c9740cfb3c1e. ![]() With Faker, I can do something like this: fine do I don’t like this, though, because I often find it helpful if my test values resemble the kinds of values they’re standing in for. ![]() One possible solution to this problem is to replace the instances of "MyString" with something like SecureRandom.hex. If in this example we require each customer to have a unique email address, then we’ll get a database error when we create two customer records because the email address of MyString will be a duplicate. #ADD TEST FILES TO RAILS APP CHEF PLUS#This is fine for just one record but becomes a problem if we have multiple records plus a unique constraint. fakerīy default, Factory Bot (the tool for generating test data) will give us factories that look something like this: fine do #ADD TEST FILES TO RAILS APP CHEF DRIVERS#Unfortunately it can be somewhat tedious to keep the drivers up to date. There are drivers for Chrome, drivers for Edge, etc. In order for Selenium to work with a browser, Selenium needs drivers. Capybara allows us to control Selenium using Ruby. The underlying tool that allows us to simulate user input in the browser is called Selenium. tests that interact with the browser and simulate clicks and keystrokes. capybaraĬapybara is a tool for writing acceptance tests, i.e. Like rspec-rails, factory_bot_rails is a Rails-specific version of a more general gem, factory_bot. Most Rails projects that use RSpec also use Factory Bot. factory_bot_railsįactory Bot is a tool for generating test data. The rspec-rails gem is the version of the RSpec gem that’s specifically fitted to Rails. RSpec is one of the two most popular test frameworks for Rails, the other being Minitest. Here’s an explanation of each gem I chose to add to my project. $ git commit -a -m'Initial commit' The gems ![]() (I could have configured my application template to do this step manually, but I wanted to explicitly show it as a separate step, partially to keep the application template clean and easily understandable.) $ git add. Once I’ve created my project, I add it to version control. $ rails new my_project -T -d postgresql \ #ADD TEST FILES TO RAILS APP CHEF FULL#In this case I’m using a URL so that you can just copy and paste my full rails new command as-is if you want to. Application templates can be specified using either a local file path or a URL. In this particular case I’m also using the -m flag so I can pass in my application template. This choice of course has little to do with testing but I’m including it for completeness. When I run rails new, I always use the -T flag for “skip test files” because I always use RSpec instead of the Minitest that Rails comes with by default.Īlso, incidentally, I always use PostgreSQL. That’s not to say I never write any of these types of tests, just sufficiently rarely that it makes more sense for me to create files manually in those cases than for me to allow files to get generated every single time I generate a scaffold. There are certain kinds of tests I tend not to write and I don’t want to clutter up my codebase with a bunch of empty files. #ADD TEST FILES TO RAILS APP CHEF CODE#The code in the file says “when a scaffold is generated, don’t generate files for fixtures, view specs, helper specs, routing specs, request specs or controller specs”. The second chunk of code creates a file at config/initializers/generators.rb. A more detailed explanation of these gems is below. The first chunk of code will add a certain set of gems to my Gemfile. A more detailed explanation can be found below the code. #ADD TEST FILES TO RAILS APP CHEF INSTALL#Here’s an application template I created that will do two things: 1) install a handful of testing-related gems and 2) add a config file that will tell RSpec not to generate certain types of files. This is useful if you create a lot of new Rails applications with parts in common. My application templateįirst, if you don’t know, it’s possible to create a file called an application template that you can use to create a Rails application with certain code or configuration included. Let’s start with the application template.
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