public JsonResult Calculate(ResistorViewModel resistorModel)
{
resistorModel.ComputedResult = "";
if (!ModelState.IsValid)
{
return(Json(new { Success = false, Result = "", Errors = ModelState.Values.SelectMany(x => x.Errors).Select(x => x.ErrorMessage).ToList() }, JsonRequestBehavior.AllowGet));
}
else
{
try
{
float tolerance = 0f;
double ohmValue = _resCalSvc.CalculateResistorValue(resistorModel.SelectedColorA, resistorModel.SelectedColorB, resistorModel.SelectedColorC, resistorModel.SelectedColorD);
if (!string.IsNullOrEmpty(resistorModel.SelectedColorD))
{
tolerance = _resCalSvc.GetTolerance(resistorModel.SelectedColorD);
}
string result = $"Resistor value: { ohmValue.ToSI() } Ω +/- { tolerance } %";
return(Json(new { Success = true, Result = result, Errors = "" }, JsonRequestBehavior.AllowGet));
}
catch (ArgumentException ex)
{
resistorModel.ComputedResult = "";
return(Json(new { Success = false, Result = "", Errors = new List <string>(1)
{
ex.Message
} }, JsonRequestBehavior.AllowGet));
}
catch (Exception)
{
resistorModel.ComputedResult = "";
//logger.log exception
return(Json(new { Success = false, Result = "", Errors = new List <string>(1)
{
"Unknown error occured."
} }, JsonRequestBehavior.AllowGet));
}
}
}
public void CalculateResitorValue_Valid_CaseInsenstive_Inputs(string bandAColor, string bandBColor, string bandCColor, string bandDColor, double expectedValue)
{
double actualValue = _calcSvc.CalculateResistorValue(bandAColor, bandBColor, bandCColor, bandDColor);
Assert.AreEqual(expectedValue, actualValue);
}