/**
  * @test
  */
 public function itShouldReturnAValidCurrencyPairGivenTwoCurrencies()
 {
     $currencyFrom = new Currency(Currency::CURRENCY_CODE_EURO);
     $currencyTo = new Currency(Currency::CURRENCY_CODE_US_DOLLAR);
     $request = new GetCurrencyPairRatioRequest($currencyFrom, $currencyTo);
     $expectedCurrencyPair = new CurrencyPair($currencyFrom, $currencyTo, 1.5);
     $this->service->shouldReceive('execute')->andReturn($expectedCurrencyPair);
     $expectedResponse = new GetCurrencyPairRatioResponse($expectedCurrencyPair);
     $response = $this->useCase->execute($request);
     $this->assertEquals($expectedResponse->currencyPair(), $response->currencyPair());
 }
 /**
  * @param GetCurrencyPairRatioResponse $response
  *
  * @return mixed
  */
 public function present(GetCurrencyPairRatioResponse $response)
 {
     return new CurrencyPairResource($response->currencyPair());
 }