public Task <double> Handle(GetBitcoinConversionQuery request, CancellationToken cancellationToken)
{
var conversionInfo = new BitcoinConversionInfo
{
Amount = request.Value,
Abbreviation = request.Abbreviation
};
return(_bitcoinPriceService.ConvertToBitcoin(conversionInfo, cancellationToken));
}
public async Task <double> ConvertToBitcoin(BitcoinConversionInfo bitcoinConversionInfo,
CancellationToken cancellationToken)
{
if (bitcoinConversionInfo.Abbreviation == null)
{
throw new ArgumentException($"{nameof(bitcoinConversionInfo.Abbreviation)} is required for method" +
$"{nameof(ConvertToBitcoin)}");
}
var path =
// ReSharper disable once StringLiteralTypo
$"tobtc?currency={bitcoinConversionInfo.Abbreviation}" +
$"&value={bitcoinConversionInfo.Amount}";
return
(await GetResponseFromService <double>(path,
cancellationToken));
}
public async Task ConvertToBitcoin_UnsuccessfulHttpRequest_ThrowsBitcoinPriceServiceException()
{
var mockHttp = new MockHttpMessageHandler();
mockHttp.When("https://blockchain.info/tobtc")
.Respond(HttpStatusCode.InternalServerError);
var service = new BitcoinPriceService(_configuration.Object,
mockHttp.ToHttpClient());
var conversionInfo = new BitcoinConversionInfo
{
Abbreviation = "GBP",
Amount = 1323
};
await Assert
.ThrowsAsync <BitcoinPriceService.BitcoinPriceServiceException>(async() =>
await service.ConvertToBitcoin(conversionInfo,
CancellationToken.None));
}
public async Task ConvertToBitcoin_AbbreviationNull_ThrowsArgumentException()
{
var mockHttp = new MockHttpMessageHandler();
mockHttp.When("https://blockchain.info/tobtc")
.Respond("application/json",
"200");
var service = new BitcoinPriceService(_configuration.Object,
mockHttp.ToHttpClient());
var conversionInfo = new BitcoinConversionInfo
{
Abbreviation = null,
Amount = 1323
};
await Assert
.ThrowsAsync <ArgumentException>(async() =>
await service.ConvertToBitcoin(conversionInfo,
CancellationToken.None));
}
public async Task ConvertToBitcoin_ReturnsCorrectResponse()
{
var mockHttp = new MockHttpMessageHandler();
mockHttp.When("https://blockchain.info/tobtc")
.Respond("application/json",
"200");
var service = new BitcoinPriceService(_configuration.Object,
mockHttp.ToHttpClient());
var conversionInfo = new BitcoinConversionInfo
{
Abbreviation = "GBP",
Amount = 1323
};
var value =
await service.ConvertToBitcoin(conversionInfo,
CancellationToken.None);
Assert.Equal(200,
value);
}
