/// <summary>
/// Command function for calculating histogram. Constructs a query string and makes a call to the API
/// If successful, it will get a <see cref="HistogramResponse"/> in response, which will be parsed
/// and displayed in the UI.
/// </summary>
/// <param name="obj"></param>
private async void CalculateHistogram(object obj)
{
string queryString = $"expr={QueryExpression}&attributes=Y,F.FN";
//queryString += "&model=latest";
//queryString += "&count=10";
//queryString += "&offset=0";
HistogramResponse response = await _webRequest.MakeRequest <object, HistogramResponse>(HttpMethod.Get, $"calchistogram?{queryString}");
if (response == null || response.histograms.Length == 0)
{
return;
}
StringBuilder sb = new StringBuilder();
sb.AppendFormat("Totalt number of matching entities: {0}\n", response.num_entities);
foreach (Histogram histogram in response.histograms)
{
sb.AppendFormat("Attribute: {0}\n", histogram.attribute);
foreach (HistogramY histogramY in histogram.histogram)
{
sb.AppendFormat("\tValue '{0}' was found {1} times\n", histogramY.value, histogramY.count);
}
sb.Append("\n");
}
Results = sb.ToString();
}
public void GetResponseTimesHistogram_HappyPath()
{
var request = new HistogramRequest
{
After = _After,
Before = _Before,
Interval = _Interval,
Endpoint = _Endpoint
};
var entity = new HistogramResponse[] {
new HistogramResponse
{
Average = _Average,
NumberOfRequests = _NumberOfRequests,
Timestamp = _Timestamp
}
};
var mockRepository = Substitute.For <IHistogramRepository>();
mockRepository.GetResponseTimesHistogram(_Endpoint, _Interval, _After, _Before).Returns(entity);
var engine = new HistogramEngine(mockRepository);
var response = engine.GetResponseTimesHistogram(request);
Assert.AreEqual(entity[0].Average, response[0].Average);
Assert.AreEqual(entity[0].Timestamp, response[0].Timestamp);
Assert.AreEqual(entity[0].NumberOfRequests, response[0].NumberOfRequests);
}
