Setup RSpec on a fresh Rails 7 project

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Installing RSpec, FactoryBot, Faker gems and configuring for testing environment.

Ruby 3.0.1 + Rails 7.0.0

Let’s get right to it…

Start a fresh project

rails new projectname -d postgresql
cd projectname
git add -A
git commit -m "initial commit"

rails db:create
rails s

Install gems

git checkout -b rspec

In Gemfile add…

group :development, :test do
  # See
  gem "debug", platforms: %i[ mri mingw x64_mingw ]
  gem "rspec-rails"
  gem "factory_bot_rails"
  gem "faker"

Back in terminal/command line…

bundle install
rails g rspec:install

Configure gems

Create ‘support’ directory in ‘spec’ directory and create two files


And then one file in the spec directory for factories.


Configure FactoryBot

# spec/support/factory_bot.rb

RSpec.configure do |config|
  config.include FactoryBot::Syntax::Methods

Configure driver

# spec/support/chrome.rb

RSpec.configure do |config|
  config.before(:each, type: :system) do
    if ENV["SHOW_BROWSER"] == "true"
      driven_by :selenium_chrome
      driven_by :selenium, using: :headless_chrome, screen_size: [1400, 1400]

Require support files in rails_helper.rb

# spec/rails_helper.rb

require_relative 'support/factory_bot'
require_relative 'support/chrome'

When you generate a User model (or any model) RSpec will generate a factory for you in your factories.rb file.
You can modify it to look like this.

# spec/factories.rb

FactoryBot.define do
  factory(:user) do
    password  Faker::Internet.password 

it “should run a test” do…

Run rspec command in the terminal and you should see it run and output some green text.

-> rspec
No examples found.

Finished in 0.00038 seconds (files took 0.94577 seconds to load)
0 examples, 0 failures

Finish up

git add -A
git commit -m "add rspec"
git checkout main
git merge rspec
git branch -D rspec
git push # assuming you have a repo online somewhere

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Building API in Rails Series

Hi there, welcome to the series of Building API in Rails. Let’s just start with what this series will cover

  1. Setting up our Ruby on Rails API only application with all necessary gems and stuff.
  2. Adding Rspec for the TDD approach.
  3. Building a CRUD RESTful APIs
  4. Active model serializers
  5. Integrating Fast JSON api, JSON API specification
  6. Securing our API with JWT
  7. Integration SWAGGER for api documentation
  8. and many more….

1️⃣ Buidling API in Rails Part 1 🚀​ .

2️⃣ Buidling API in Rails Part 2 💎 .

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