require "spec_helper"

describe FactoryGirl::Decorator::DisallowsDuplicatesRegistry do
  let(:registry) { stub("registry", name: 'Great thing', register: true) }

  subject { described_class.new(registry) }

  it "delegates #register to the registry when not registered" do
    registry.stubs(registered?: false)
    subject.register(:awesome, {})
    expect(registry).to have_received(:register).with(:awesome, {})
  end

  it "raises when attempting to #register a previously registered strategy" do
    registry.stubs(registered?: true)
    expect { subject.register(:same_name, {}) }.
      to raise_error(FactoryGirl::DuplicateDefinitionError, "Great thing already registered: same_name")
  end
end