public async Task ShouldSendRequestWithCorrectDetails()
            {
                //act
                await _sut.AcquireAsync(_card, _currency, _amount);

                //arrange
                _sentRequest.Should().NotBeNull();
                _sentRequest.Card.Should().BeEquivalentTo(_card);
                _sentRequest.Currency.Should().Be(_currency);
                _sentRequest.Amount.Should().Be(_amount);
            }