The document discusses what tests are in Rails and how to write them. It explains that tests should validate functionality, set up data using factories, perform an action, and make an assertion. Tests can be written for models, controllers, and views using RSpec. When tests run, any fixture data is reset, "let" blocks are run for setup, the test method is executed, and teardown blocks are run. Tests can be run using the 'guard' or 'rspec' commands.

1. Rails Test Prescriptions Chapter 2

2. What's a test?

3. What's a test? It “should do something” do #Logic end

4. What's a test? it { should validate_uniqueness_of(:username) }

5. What goes in a test?

6. What goes in a test? Set up your data

7. What goes in a test? Factories

8. What goes in a test? # In spec/factories/users.rb FactoryGirl.define do factory :user do sequence(:email) { |n| "user#{n}@generalthings.com" } sequence(:username) { |n| "user#{n}name" } first_name Faker::Name.first_name last_name Faker::Name.last_name phone_number Faker::PhoneNumber.phone_number title Faker::Name.prefix password "password" bio Faker::Lorem.sentences end end

9. What goes in a test? Perform the action

10. What goes in a test? Perform the assertion

11. What goes in a test? Tear Down

12. What goes in a test? Tear Down (Rarely needed)

13. Por ejemplo describe "user behavior" do let(:me) { User.new(name: "Noel", Password: “foobar”) } let(:you) { Factory(:user) } it "should let users be friends" do me.add_friend(you) you.should have(1).friend end end

14. What can you test in Rails? Models

15. What can you test in Rails? Controllers

16. What can you test in Rails? Views

17. What can you test in Rails? Views (but view tests are brittle)

18. How is Rspec different from Test::Unit “ Unit tests” usually test models spec/models/user_spec.rb

19. How is Rspec different from Test::Unit “ Functional tests” usually test controllers spec/controllers/users_controller_spec.rb

20. How is Rspec different from Test::Unit “ Integration tests” usually test multiple controllers

21. What Happens when Rails Tests Run?

22. What Happens when Rails Tests Run? Reset fixture data.

23. What Happens when Rails Tests Run? Run any defined “let” “ setup” or “before” blocks

24. What Happens when Rails Tests Run? Run the actual test method.

25. What Happens when Rails Tests Run? Run all teardown blocks

26. Running your tests $ bundle exec guard start

27. Running your tests $ begs