validate settings if no prebound settings

Author: zhiyuanliang-ms

src/Microsoft.FeatureManagement/FeatureFilters/TimeWindowFilter.cs

@@ -69,6 +69,13 @@ public Task<bool> EvaluateAsync(FeatureFilterEvaluationContext context)
             // Check if prebound settings available, otherwise bind from parameters.
             TimeWindowFilterSettings settings = (TimeWindowFilterSettings)context.Settings ?? (TimeWindowFilterSettings)BindParameters(context.Parameters);
 
+            //
+            // If prebound settings is not available, which means BindParameters method is not called, we need to validate the feature filter settings.
+            if (context.Settings == null && !RecurrenceValidator.TryValidateSettings(settings, out string paramName, out string reason))
+            {
+                throw new ArgumentException(reason, paramName);
+            }
+
             DateTimeOffset now = SystemClock?.UtcNow ?? DateTimeOffset.UtcNow;
 
             if (!settings.Start.HasValue && !settings.End.HasValue)