code.rb

class IngestionManager
  def initialize(solrIngester, personRepository)
    @solrIngester = solrIngester
    @personRepository = personRepository
  end
  def ingestAllFromDatabase
    @solrIngester.clear
    @personRepository.each do |doc|
      @solrIngester.addDocument(doc)
    end
    @solrIngester.commit
  end
end

spec.rb

describe IngestionManager do
  it "should ingest all the people from the database" do
    ingester = mock('ingester')
    repository = mock('repository')
    manager = IngestionManager.new(ingester, repository)
    person1 = mock('person1')
    person2 = mock('person2')

    ingester.should_receive :clear
    repository.should_receive(:each).and_yield(person1).and_yield(person2)
    ingester.should_receive(:addDocument).with(person1)
    ingester.should_receive(:addDocument).with(person2)
    ingester.should_receive :commit

    manager.ingestAllFromDatabase
  end
end