Example for https://groups.google.com/forum/#!topic/rspec/NL_NKukH6jQ

transaction_spec.rb

class SomeEntity
  def run
    transaction do
      mark_non_eligible
      make_invoice_batch
      send_batch_email
    end
  end

  def transaction
    yield
  end

  def mark_non_eligible
  end

  def make_invoice_batch
  end

  def send_batch_email
  end
end

RSpec.describe SomeEntity do
  it 'wraps the processing in a transaction' do
    entity = SomeEntity.new

    expect(entity).to receive(:transaction).and_yield do |transaction_scope|
      expect(transaction_scope).to receive(:mark_non_eligible)
      expect(transaction_scope).to receive(:make_invoice_batch)
      expect(transaction_scope).to receive(:send_batch_email)
    end

    entity.run
  end
end

👍