clean tweet gateway contract tests

gistfile1.rb

require_relative '../../contracts/tweet_gateway_contract'

class TG < TweetGatewayContract
  def save input
    return input
  end
end

class TGoutput < TweetGatewayContract
  def save input
    return :invalid => true, :data => input
  end
end


describe TweetGatewayContract do

  describe '.save' do

    it 'should return a hash of the saved data with valid input' do
      tg = TG.new
      result = tg.save :text => 'foo'
      result.should eq :text => 'foo'
    end

    it 'should raise an exception with invalid input' do
      tg = TGoutput.new
      expect { tg.save :text => 'foo', :test => 'explode' }.to raise_error(ContractInputError)
    end

    it 'should raise an exception with invalid saved data returned' do
      tg = TGoutput.new
      expect { tg.save :text => 'foo' }.to raise_error(ContractOutputError)
    end

  end