rubyc rspec intro

saludador.rb

class Saludador
  def initialize(*user)
    @user = user[0]
    raise "An user has to be provided" unless @user

  end
  def saluda
    "Hola amigo"
  end

  def name
    @user.name
  end
end

test_spec.rb

$:.unshift(File.dirname(__FILE__))
require 'saludador'

describe Saludador do

  context 'a user object is provided' do

    subject do 
      user = mock()
      user.stub!(:name).and_return("juan")
      Saludador.new(user) 
    end

    context 'test basic object behavior' do

      it 'should have a saluda method' do
        subject.should respond_to("saluda")
      end

      it 'should return "Hola amigo" when invoking saluda method' do
        subject.saluda.should eq("Hola amigo")
      end

    end

    context 'working with user objects' do

      it 'the initializer should receive an user object' do
          user = mock()
          user.stub!(:name).and_return("juan")
          s = Saludador.new(user)
          s.name.should eq("juan")
      end

      it 'saludador should return Hola amiga plus the name of the user object'

    end

  end

  context 'no user was provided' do

    it 'should raise an exception' do
      debugger
      expect { Saludador.new }.to raise_error
      expect { Saludador.new }.to raise_error("An user has to be provided")
    end

  end

end