spec/danconia/exchanges/exchange_spec.rb in danconia-0.2.9 vs spec/danconia/exchanges/exchange_spec.rb in danconia-0.3.0

@@ -1,7 +1,5 @@
-require 'spec_helper'
-
 module Danconia
   module Exchanges
     describe Exchange do
       context 'rate' do
         it 'returns the exchange rate value for the supplied currencies' do
@@ -28,10 +26,24 @@
           expect(exchange.rate('BRL', 'ARS')).to eq 1.5
           expect(exchange.rate('EUR', 'BRL')).to eq 3 / 1.5
         end
 
         it 'raises an error if the conversion cannot be made' do
-          expect { subject.rate('USD', 'EUR') }.to raise_error Errors::ExchangeRateNotFound
+          expect { fake_exchange({}).rate('USD', 'EUR') }.to raise_error Errors::ExchangeRateNotFound
+        end
+
+        it 'should allow to pass options to filter the rates' do
+          exchange = Class.new(Exchange) do
+            def rates type:
+              case type
+              when 'divisa' then {'USDARS' => 7}
+              when 'billete' then {'USDARS' => 8}
+              end
+            end
+          end.new
+
+          expect(exchange.rate('USD', 'ARS', type: 'divisa')).to eq 7
+          expect(exchange.rate('USD', 'ARS', type: 'billete')).to eq 8
         end
 
         def fake_exchange(rates)
           FixedRates.new(rates: rates)
         end