/**
  * @covers ::loadMultiple
  */
 public function testLoadMultiple()
 {
     $source_currency_code = $this->randomMachineName();
     $destination_currency_code_a = $this->randomMachineName();
     $destination_currency_code_b = $this->randomMachineName();
     $exchange_rate_a = new ExchangeRate($source_currency_code, $destination_currency_code_a, mt_rand(), $this->pluginId);
     $exchange_rate_b = new ExchangeRate($source_currency_code, $destination_currency_code_b, mt_rand(), $this->pluginId);
     $exchange_rates = [$source_currency_code => [$destination_currency_code_a => $exchange_rate_a, $destination_currency_code_b => $exchange_rate_b]];
     $this->exchangeRateProvider->expects($this->once())->method('loadMultiple')->with([$source_currency_code => [$destination_currency_code_a, $destination_currency_code_b]])->willReturn($exchange_rates);
     $loaded_exchange_rates = $this->sut->loadMultiple([$source_currency_code => [$destination_currency_code_a, $destination_currency_code_b]]);
     $this->assertExchangeRateEquals($exchange_rate_a, $loaded_exchange_rates[$source_currency_code][$destination_currency_code_a]);
     $this->assertExchangeRateEquals($exchange_rate_b, $loaded_exchange_rates[$source_currency_code][$destination_currency_code_b]);
 }
 /**
  * @covers ::loadMultiple
  */
 public function testLoadMultiple()
 {
     $sourceCurrencyCode = 'nlg';
     $destinationCurrencyCode = 'EUR';
     $nonExistentCurrencyCode = 'foo';
     $sourceToDestinationRate = '2.20371';
     $destinationToSourceRate = '0,45378021609014';
     $sourceToDestinationDecoratedExchangeRate = new ExchangeRate($sourceCurrencyCode, $destinationCurrencyCode, $sourceToDestinationRate);
     $destinationToSourceDecoratedExchangeRate = new ExchangeRate($destinationCurrencyCode, $sourceCurrencyCode, $destinationToSourceRate);
     $sourceIdenticalDecoratedExchangeRate = new ExchangeRate($sourceCurrencyCode, $sourceCurrencyCode, 1);
     $destinationIdenticalDecoratedExchangeRate = new ExchangeRate($destinationCurrencyCode, $destinationCurrencyCode, 1);
     $currencyCodes = [$sourceCurrencyCode => [$sourceCurrencyCode, $destinationCurrencyCode, $nonExistentCurrencyCode], $destinationCurrencyCode => [$sourceCurrencyCode, $destinationCurrencyCode, $nonExistentCurrencyCode]];
     $decoratedExchangeRates = [$sourceCurrencyCode => [$sourceCurrencyCode => $sourceIdenticalDecoratedExchangeRate, $destinationCurrencyCode => $sourceToDestinationDecoratedExchangeRate, $nonExistentCurrencyCode => null], $destinationCurrencyCode => [$sourceCurrencyCode => $destinationToSourceDecoratedExchangeRate, $destinationCurrencyCode => $destinationIdenticalDecoratedExchangeRate, $nonExistentCurrencyCode => null], $nonExistentCurrencyCode => [$sourceCurrencyCode => null, $destinationCurrencyCode => null, $nonExistentCurrencyCode => null]];
     $this->decoratedExchangeRateProvider->expects($this->once())->method('loadMultiple')->with($currencyCodes)->willReturn($decoratedExchangeRates);
     $retrievedExchangeRates = $this->sut->loadMultiple($currencyCodes);
     // Ensure that these are the exchange rates that were returned by the
     // decorated provider.
     $this->assertSame($decoratedExchangeRates, $retrievedExchangeRates);
     // Ensure the process callback was executed for all exchange rates.
     $this->assertTrue($retrievedExchangeRates[$sourceCurrencyCode][$sourceCurrencyCode]->processed);
     $this->assertTrue($retrievedExchangeRates[$sourceCurrencyCode][$destinationCurrencyCode]->processed);
     $this->assertTrue($retrievedExchangeRates[$destinationCurrencyCode][$sourceCurrencyCode]->processed);
     $this->assertTrue($retrievedExchangeRates[$destinationCurrencyCode][$destinationCurrencyCode]->processed);
 }