fix broken test

Author: asos-gurpreetsingh

src/TestStack.BDDfy/Scanners/StepScanners/ArgumentCleaningExtensions.cs

@@ -11,7 +11,7 @@ internal static object[] FlattenArrays(this IEnumerable<object> inputs)
             return [.. inputs.Select(FlattenArray)];
         }
 
-        public static object FlattenArray(this object input)
+        public static object FlattenArray(this object? input)
         {
             if (input is Array inputArray)
             {
@@ -22,7 +22,7 @@ public static object FlattenArray(this object input)
             return GetSafeValue(input);
         }
 
-        static object GetSafeValue(object input) => input switch
+        static object GetSafeValue(object? input) => input switch
         {
             null => "<null>",
             string s => s == "" ? "<empty>" : (s.Trim() == "" ? $"'{s}'" : s),

src/TestStack.BDDfy/Scanners/StepScanners/Examples/ExampleValue.cs

@@ -55,6 +55,6 @@ public class ExampleValue(string header, object? underlyingValue, Func<int> getR
 
         public override string ToString() => string.Join("{0}: {1}", Header, _underlyingValue);
 
-        public string? GetValueAsString() => _underlyingValue?.FlattenArray().ToString();
+        public string? GetValueAsString() => _underlyingValue.FlattenArray().ToString();
     }
 }

src/TestStack.BDDfy/Step.cs

@@ -7,7 +7,7 @@ namespace TestStack.BDDfy
     public class Step
     {
         private readonly StepTitle _stepTitle;
-        private string _title;
+        private string? _title;
         public Step(
             Func<object, object> action,
             StepTitle stepTitle,
@@ -45,7 +45,7 @@ public Step(Step step)
         public string Title => _title??= _stepTitle;
         public ExecutionOrder ExecutionOrder { get; private set; }
         public Result Result { get; set; }
-        public Exception Exception { get; set; }
+        public Exception? Exception { get; set; }
         public int ExecutionSubOrder { get; set; }
         public TimeSpan Duration { get; set; }
         public List<StepArgument> Arguments { get; private set; }