Code review fix, test fix

Author: oroztocil

src/Http/Http/perf/Microbenchmarks/ValidatableTypesBenchmark.cs

@@ -244,6 +244,7 @@ public IEnumerable<ValidationResult> Validate(ValidationContext validationContex
 
     private class MockValidatableTypeInfo(Type type, ValidatablePropertyInfo[] members) : ValidatableTypeInfo(type, members)
     {
+        protected override ValidationAttribute[] GetValidationAttributes() => [];
     }
 
     private class MockValidatablePropertyInfo(

src/Validation/gen/Parsers/ValidationsGenerator.TypesParser.cs

@@ -82,10 +82,7 @@ internal bool TryExtractValidatableType(ITypeSymbol incomingTypeSymbol, WellKnow
 
         visitedTypes.Add(typeSymbol);
 
-        var hasValidationAttributes = typeSymbol.GetAttributes()
-            .Any(attribute => attribute.AttributeClass != null &&
-                              attribute.AttributeClass.ImplementsValidationAttribute(
-                                  wellKnownTypes.Get(WellKnownTypeData.WellKnownType.System_ComponentModel_DataAnnotations_ValidationAttribute)));
+        var hasValidationAttributes = HasValidationAttributes(typeSymbol, wellKnownTypes);
 
         // Extract validatable types discovered in base types of this type and add them to the top-level list.
         var current = typeSymbol.BaseType;
@@ -288,4 +285,20 @@ internal static ImmutableArray<ValidationAttribute> ExtractValidationAttributes(
                 NamedArguments: attribute.NamedArguments.ToDictionary(namedArgument => namedArgument.Key, namedArgument => namedArgument.Value.ToCSharpString()),
                 IsCustomValidationAttribute: SymbolEqualityComparer.Default.Equals(attribute.AttributeClass, wellKnownTypes.Get(WellKnownTypeData.WellKnownType.System_ComponentModel_DataAnnotations_CustomValidationAttribute))))];
     }
+
+    internal static bool HasValidationAttributes(ISymbol symbol, WellKnownTypes wellKnownTypes)
+    {
+        var validationAttributeSymbol = wellKnownTypes.Get(WellKnownTypeData.WellKnownType.System_ComponentModel_DataAnnotations_ValidationAttribute);
+
+        foreach (var attribute in symbol.GetAttributes())
+        {
+            if (attribute.AttributeClass is not null &&
+                attribute.AttributeClass.ImplementsValidationAttribute(validationAttributeSymbol))
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
 }