This is the source of exchange rates from the Central European Bank.

NewMockExchangeRate creates a new mock instance.

NewMockSource creates a new mock instance.

MockExchangeRate is a mock of ExchangeRate interface.

MockExchangeRateMockRecorder is the mock recorder for MockExchangeRate.

MockSource is a mock of Source interface.

MockSourceMockRecorder is the mock recorder for MockSource.

ExchangeRate represents the exchange rate of a particular currency pair.

Source is an interface for getting data from external sources.