Switching Data Sources: Testing Method Equivalence

receipt_data_source_spec.rb

require 'rails_helper'

RSpec.describe Services::ReceiptDataSource do
  describe "equivalency" do
    it "has all the methods present in the repository library" do
      expect(
        Repositories::ReceiptDataSource.instance_methods - Services::ReceiptDataSource.instance_methods
      ).to be_empty
    end
  end
  
  ...

end