Example of Test-Driven testing in Ruby

Client.rb

admin1 = User.getUserInfo("admin1")
puts admin1["email"] # -> Prints admin1@email.com

user1 = User.getUserInfo("user_1")
puts user1["email"] # -> Prints user1@email.com

wrongPasswordForUser1 = user1["password"] + "Sufix to break password"

User.rb

require 'yaml' #Gem used to parse YAML files

class User
  def new() #Constructor
    #Opens user.yml file, stored at the same directory of this class
    @users = YAML.load_file(File.expand_path("users.yml", __FILE__))
  end
  
  def self.getUserInfo(user)
    return @users[user]
    #See client for example
  end
end

users.yml

admin_1:
  email:
    admin1@email.com
  password:
    adminPass
admin_2:
  email:
    admin2@email.com
  password:
    adminPass2
user_1:
  email:
    user1@email.com
  password:
    password_from_user