public async Task <List <FeeDto> > GetFeeAsync(string fromCountryCode, string toCountryCode, decimal transferAmount, CancellationToken cxlToken)
{
if (string.IsNullOrEmpty(fromCountryCode) || string.IsNullOrEmpty(toCountryCode))
{
throw new ArgumentNullException("countryCode");
}
if (transferAmount <= 0)
{
throw new ArgumentException("Amount must be greater than 0");
}
var providerSlab = await _provider.GetTransactionFeeAsync(fromCountryCode, toCountryCode, cxlToken);
var providerFee = providerSlab?.OrderBy(t => t.Amount).FirstOrDefault(t => transferAmount < t.Amount)?.Fee ?? 0;
var additionalFees = (await _feeRepository.GetApplicableFeesAsync(fromCountryCode, toCountryCode))
?? new List <Fee>();
additionalFees.Add(new Fee {
Amount = providerFee, FeeCode = "TF", FeeName = "Transfer Fee"
});
return(additionalFees.Select(t => new FeeDto
{
Amount = t.Amount,
FeeName = t.FeeName,
FeeCode = t.FeeCode
}).ToList());
}
public async Task GetFeeAsync_Should_Return_Additional_Fee_If_Present()
{
// arrange
var fees = new List <FeeResponse>
{
new FeeResponse {
Fee = 20, Amount = 1000
},
new FeeResponse {
Fee = 10, Amount = 2000
},
new FeeResponse {
Fee = 5, Amount = 3000
}
};
_mockProvider.GetTransactionFeeAsync("US", "IN", _cxlToken)
.Returns(Task.FromResult(fees));
var additionalFees = new List <Fee>
{
new Fee {
Amount = 100, FeeCode = "CF", FeeName = "Convenience Fee"
}
};
_mockFeeRepository.GetApplicableFeesAsync("US", "IN")
.Returns(Task.FromResult(additionalFees));
// act
var result = await _service.GetFeeAsync("US", "IN", 1, _cxlToken);
// assert
Assert.Multiple(() =>
{
Assert.AreEqual(2, result.Count);
Assert.That(result.Exists(t => t.FeeCode == "TF"));
Assert.That(result.Exists(t => t.FeeCode == "CF"));
Assert.AreEqual(120, result.Sum(t => t.Amount));
});
}