public void GetAllAsync_ReturnsPaymentTypes_Always()
        {
            var testPayments = CreateTestCollection();

            A.CallTo(() => _paymentRepository.FindAllAsync(A <Expression <Func <PaymentType, bool> > > ._)).Returns(testPayments);
            var payments = _paymentTypeService.GetAllAsync().Result;

            payments.Count().Should().Be(testPayments.Count());
        }