public async Task <GetExchangeResponse> GetExchangeAsync(string currency)
{
GetExchangeResponse result = null;
try
{
var response = await _client.GetAsync($"{_baseURL}/{currency}");
if (response.IsSuccessStatusCode)
{
var content = await response.Content.ReadAsStringAsync();
var jsonExchange = JArray.Parse(content);
return(new GetExchangeResponse()
{
BuyPrice = (decimal)jsonExchange[0],
SellPrice = (decimal)jsonExchange[1]
});
}
}
catch (Exception exception)
{
_logger.LogError(exception, "Unhandled exception");
}
return(result);
}
public async Task <GetExchangeResponse> GetExchange()
{
GetExchangeResponse result = null;
try
{
result = await _externalService.GetExchangeAsync(CurrencyName);
}
catch (Exception exception)
{
_logger.LogError(exception, "Unhandled exception");
}
return(result);
}
public async Task GetExchange_OnCall_Success()
{
// Arrange
var exchange = new GetExchangeResponse {
BuyPrice = 30.0M, SellPrice = 40.0M
};
_mockExternalService.GetExchangeAsync(_target.CurrencyName)
.Returns(Task.FromResult(exchange));
// Act
var result = await _target.GetExchange();
// Assert
Assert.IsNotNull(result);
}
public async Task BuyCurrency_OnIValidAmount_ThrowsException()
{
// Arrange
var exchange = new GetExchangeResponse {
BuyPrice = 30.0M, SellPrice = 40.0M
};
_mockExternalService.GetExchangeAsync(_target.CurrencyName)
.Returns(Task.FromResult(exchange));
_mockExchangeRepository.GetCurrentTotal(Arg.Any <int>(), "USD", Arg.Any <DateTime>())
.Returns(Task.FromResult(151M));
var amountInPesos = 2000;
// Act && Assert
await Assert.ThrowsExceptionAsync <Exception>(async() => await _target.BuyCurrency(1, amountInPesos));
await _mockExchangeRepository.DidNotReceive().SaveTransaction(Arg.Any <ExchangePurchases>());
}
public async Task BuyCurrency_OnValidAmount_Success()
{
// Arrange
var exchange = new GetExchangeResponse {
BuyPrice = 30.0M, SellPrice = 40.0M
};
_mockExternalService.GetExchangeAsync(_target.CurrencyName)
.Returns(Task.FromResult(exchange));
_mockExchangeRepository.GetCurrentTotal(Arg.Any <int>(), "USD", Arg.Any <DateTime>())
.Returns(Task.FromResult(120M));
var amountInPesos = 2000;
// Act
var result = await _target.BuyCurrency(1, amountInPesos);
// Assert
Assert.IsTrue(result.BoughtAmount > 0.00M);
}
public async Task <GetExchangeResponse> GetExchange()
{
GetExchangeResponse result = null;
try
{
var dollarExchange = await _dollarController.GetExchange();
result = new GetExchangeResponse
{
BuyPrice = dollarExchange.BuyPrice / 4,
SellPrice = dollarExchange.SellPrice / 4
};
}
catch (Exception exception)
{
_logger.LogError(exception, "Unhandled exception");
}
return(result);
}
public override async Task <GetExchangeResponse> GetExchange(GetExchangeRequest request, ServerCallContext context)
{
BsonDocument bson;
try
{
bson = mongoCollection.Find($"{{ _id: ObjectId('{request.Id}') }}").FirstOrDefault();
}
catch (Exception ex)
{
throw new RpcException(new Status(StatusCode.Unknown, $"Could get Exchange with id {request.Id} -> {ex.Message}"));
}
if (bson == null)
{
throw new RpcException(new Status(StatusCode.NotFound, $"Could not find Exchange with id {request.Id}"));
}
var exchange = new Exchange()
{
Country = bson.GetValue("country").AsString,
Id = bson.GetValue("id").AsString,
Name = bson.GetValue("name").AsString,
HasTradingIncentive = bson.GetValue("has_trading_incentive").AsString,
Image = bson.GetValue("image").AsString,
TradeVolume24HBtcNormalized = bson.GetValue("trade_volume_24h_btc_normalized").AsString,
TrustScore = bson.GetValue("trust_score").AsString,
TrustScoreRank = bson.GetValue("score_rank").AsString,
Url = bson.GetValue("url").AsString,
YearEstablished = bson.GetValue("year_established").AsString
};
var response = new GetExchangeResponse {
Result = exchange
};
return(await Task.FromResult(response));
}
