Removing min value range check when converting from nullable unsigned numeric source values

Author: SteveWilkes

AgileMapper.UnitTests/SimpleTypeConversion/WhenConvertingToInts.cs

@@ -86,9 +86,9 @@ public void ShouldMapATooBigUnsignedLongToAnInt()
         }
 
         [Fact]
-        public void ShouldMapATooBigUnsignedLongToANullableInt()
+        public void ShouldMapATooBigUnsignedNullableLongToANullableInt()
         {
-            var source = new PublicField<ulong> { Value = ulong.MaxValue };
+            var source = new PublicField<ulong?> { Value = ulong.MaxValue };
             var result = Mapper.Map(source).ToANew<PublicProperty<int?>>();
 
             result.Value.ShouldBeNull();

AgileMapper/TypeConversion/NumericValueIsInRangeComparison.cs

@@ -23,7 +23,7 @@ public static Expression For(Expression sourceValue, Type nonNullableTargetType)
             var sourceValueIsLessThanOrEqualToMaxValue =
                 Expression.LessThanOrEqual(maxValueComparisonLeftSide, maxValueComparisonRightSide);
 
-            if (sourceValue.Type.IsUnsignedNumeric())
+            if (sourceValue.Type.GetNonNullableType().IsUnsignedNumeric())
             {
                 return sourceValueIsLessThanOrEqualToMaxValue;
             }