good_invoice_spec.rb

require 'spec_helper'
describe Invoice do
  describe "scopes" do
    subject { @invoices }

    describe "arrears" do
      before :all do
        @tutorial_passed_1 = Tutorial.make :starts_at => 2.seconds.ago
        @tutorial_passed_2 = Tutorial.make :starts_at => 1.second.ago
        @tutorial_not_passed_1 = Tutorial.make :starts_at => 1.hour.from_now
        @tutorial_not_passed_2 = Tutorial.make :starts_at => 2.hours.from_now

        @paid_invoice_with_past_tutorial = 
          Invoice.make(:paid_on => 2.days.ago,
                       :student_tutorials => [@tutorial_passed_2])
        @unpaid_invoice_with_past_tutorial = 
          Invoice.make(:student_tutorials => [@tutorial_passed_1])

        @paid_invoice_with_future_tutorial = 
          Invoice.make(:paid_on => 1.second.ago, 
                       :student_tutorials => [@tutorial_not_passed_1])
        @unpaid_invoice_with_future_tutorial = 
          Invoice.make(:student_tutorials => [@tutorial_not_passed_2])

        @invoice_without_tutorial = Invoice.make

        @invoices = Invoice.arrears
      end

      it { should_not include(@invoice_without_tutorial) }
      it { should_not include(@paid_invoice_with_future_tutorial) }
      it { should_not include(@unpaid_invoice_with_future_tutorial) }
      it { should_not include(@paid_invoice_with_past_tutorial) }
      it { should include(@unpaid_invoice_with_past_tutorial) }
    end
  end
end