require 'rails_helper'

describe Transaction do
  context "validations" do
    it { should validate_inclusion_of(:transaction_type).in_array(%w(request response fulfillment)) }
  end

  context "associations" do
    it { should belong_to :request }
  end
end

Add basic test suite for Transactions.
Add basic test suite for Transactions.

At the moment, this test suite only covers associations and validations,
for a 64% test coverage. More test will be forthcoming.
