[RAILS] [Rspec] Flow from introducing Rspec to writing unit test code for a model

This time I will write down the procedure to introduce Rspec when writing test code instead of a memorandum.

Introducing Gem

Introduce 3 types of gems used in the test. Describe in the process of group: development,: test do ~ end.

Gemfile


group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  gem 'rspec-rails
  gem 'factory_bot_rails'
  gem 'faker'
end

After writing, do bundle install and restart the local server.

Install the required files for Rspec

Terminal


% rails g rspec:install

Visualize test result logs

.rspec


--require spec_helper
--format documentation # =>Postscript

Set error message to English (optional)

Set if you want to display the test error message in English. RSpec.configure do |config|Added above.

spec/rails_helper.rb


#Omission
I18n.locale = "en"

RSpec.configure do |config|
#Omission

FactoryBot file creation

--Create a factories directory inside the spec directory. --And create a file in it to generate a test FactoryBot. --The name is model name s.rb. This time I want to write the test code of the user model, so I will use  Ľusers.rb`.

Generate user information with FactoryBot

spec/factories/users.rb


FactoryBot.define do
  factory :user do
    name {Faker::Name}
    email {Faker::Internet.free_email}
    password = Faker::Internet.password(min_length: 6)
    password {password}
    password_confirmation {password}
  end
end

Confirm that FactoryBot can be generated

Terminal (console)


pry(main)> FactoryBot.create(:user)

When an error occurs

--I got an error with the above command. At that time, it seems that the cause is that Spring is running behind the scenes, so use the spring stop command to stop Spring. --If you see Spring stopped., Spring has been stopped normally. --And then type FactoryBot.create (: user) again on the console to see the creation.

`Terminal``


#Exit the console with exit

% spring stop

Prepare a file to write the test code

--The following command will generate a file called spec / models / user_spec.rb.

Terminal


% rails g rspec:model user

Test code description

I will write test code more and more like this.

spec/models/user_spec.rb


require 'rails_helper'

RSpec.describe User, type: :model do
  pending "add some examples to (or delete) #{__FILE__}"# =>The original description is deleted

describe 'New user registration' do 
    before do
      @user = FactoryBot.build(:user)
    end

   it "name, email, password, password_If all confirmations are entered, it will be saved" do
      expect(@user).to be_valid
   end
   
  end
end

When running the test code

Run the following code.

Terminal


% bundle exec rspec spec/models/user_spec.rb

Reference site about how to write Faker

https://rubydoc.info/gems/faker/1.3.0/frames http://railscasts.com/episodes/126-populating-a-database https://github.com/takeyuweb/trygems/blob/master/try-faker/faker.md

Faker::Japanese https://github.com/tily/ruby-faker-japanese

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