public static bool Evaluate(MetricsTestResult result, out string message)
{
var withinThresholds = result.LowerBoundThreshold <= result.PercentDiff && result.PercentDiff <= result.UpperBoundThreshold;
message = withinThresholds ? $"Test for {result.MetricName} succeeded as {result.PercentDiff:0.##}% is within {result.LowerBoundThreshold:0.##}% and {result.UpperBoundThreshold:0.##}%." :
MetricsTestResult.ConstructFailureMessage(result);
return(withinThresholds);
}
public static void Evaluate(
IEnumerable <MetricsTestResult> results,
out string accumulatedMessage,
out bool accumulatedWithinThresholds)
{
accumulatedMessage = string.Empty;
accumulatedWithinThresholds = true;
foreach (var result in results)
{
// If thresholds are not set properly, default to failure
string message;
bool withinThresholds = MetricsTestResult.Evaluate(result, out message);
accumulatedMessage += message;
accumulatedWithinThresholds &= withinThresholds;
}
}
/// <summary>
/// Constructs the failure message.
/// </summary>
/// <param name="result">The result.</param>
/// <returns>System.String.</returns>
public static string ConstructFailureMessage(MetricsTestResult result)
{
var failureMessage = $"Date {result.Date:d}, Metric {result.MetricName}";
if (result.PercentDiff < result.LowerBoundThreshold)
{
failureMessage += $"Lower bound threshold: {result.LowerBoundThreshold}%";
}
else if (result.PercentDiff > result.UpperBoundThreshold)
{
failureMessage += $"Upper bound threshold: {result.UpperBoundThreshold}%";
}
failureMessage += $", Breached threshold: {result.PercentDiff:0.##}%.";
return(failureMessage);
}
