rspec mock issue

gistfile1.txt

require "spec_helper"

describe UserMailer do
  describe "registration_email" do
    @user = mock_model(User, :email => 'some@email.com', :first_name => 'john')

    let(:mail) { UserMailer.registration_email(@user) }

    it "renders the headers" do
      mail.subject.should eq("Welcome to ScreenZone!")
      mail.to.should eq([@user.email])
      mail.from.should eq(["support@screenzone.com"])
    end

    it "renders the body" do
      mail.body.encoded.should match("<p>Welcome to Screenzone, #{@user.first_name}</p>")
    end
  end

end

@user = mock_model(User, :email => 'some@email.com', :first_name => 'john')

should be:

before :each do
  @user = mock_model(User, :email => 'some@email.com', :first_name => 'john')
end

or,

let(:user) { mock_model(User, :email => 'some@email.com', :first_name => 'john') }

and change instances of @user to user