Allow ability to have different times between local and server

[comexpressao]

Had an issue where server time was being used rather than time zone of the app. Below is an example using a combination of Timecop and stubbing that I was able to use to simulate the issue. Could there be a way to set an option in hyper-spec to offset the local vs server time?

context 'calculating delivery at date' do
    { est: Time.parse('2018-04-09 21:00:00 -0400'),
      hst: Time.parse('2018-04-09 15:00:00 -10:00') }.each do |time_zone, time|
      context "for #{time_zone} location" do
        before do
          Timecop.freeze(time)
          allow(Time).to receive(:now).and_return(Time.now.utc)
        end

        after { Timecop.return }

        # When order is checked out the order is not yet created
        it 'should calculate correctly when created at is nil' do
          order = FactoryGirl.create(:order)
          order.created_at = nil
          expect(order.calculate_delivery_at).to eq(Time.parse('2018-04-17'))
        end

        it 'should calculate correctly with fullfillment' do
          order = FactoryGirl.create(:order, :with_fullfillment_job)
          expect(order.calculate_delivery_at).to eq(Time.parse('2018-04-19'))
        end

        it 'should calculate correctly when proofs are approved' do
          order = FactoryGirl.create(:order)
          expect(order.calculate_delivery_at(true)).to eq(Time.parse('2018-04-17'))
        end
      end
    end
  end