ZeroAlloc.Validation.Testing 0.2.1

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package ZeroAlloc.Validation.Testing --version 0.2.1
                    


                    

                
NuGet\Install-Package ZeroAlloc.Validation.Testing -Version 0.2.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="ZeroAlloc.Validation.Testing" Version="0.2.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="ZeroAlloc.Validation.Testing" Version="0.2.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="ZeroAlloc.Validation.Testing" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add ZeroAlloc.Validation.Testing --version 0.2.1
                    


                    

                
#r "nuget: ZeroAlloc.Validation.Testing, 0.2.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package ZeroAlloc.Validation.Testing@0.2.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=ZeroAlloc.Validation.Testing&version=0.2.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=ZeroAlloc.Validation.Testing&version=0.2.1
                    


                            Install as a Cake Tool

ZeroAlloc.Validation

NuGet Build License

Source-generated, attribute-based validation for .NET that allocates nothing on the valid path. The source generator emits a strongly-typed validator class at build time — no reflection at runtime. When all rules pass, the entire validation cycle produces zero heap allocations.

Install

dotnet add package ZeroAlloc.Validation

30-Second Example

using ZeroAlloc.Validation;

[Validate]
public class CreateOrderRequest
{
    [NotEmpty][MaxLength(50)] public string  Reference { get; set; } = "";
    [GreaterThan(0)]          public decimal Amount    { get; set; }
    [NotEmpty][EmailAddress]  public string  Email     { get; set; } = "";
}

// The source generator emits CreateOrderRequestValidator at build time
var request   = new CreateOrderRequest
{
    Reference = "ORD-2026-001",
    Amount    = 99.99m,
    Email     = "customer@example.com"
};
var validator = new CreateOrderRequestValidator();
var result    = validator.Validate(request);

if (!result.IsValid)
    foreach (ref readonly var f in result.Failures)
        Console.WriteLine($"{f.PropertyName}: {f.ErrorMessage}");

Performance

Scenario ZeroAlloc.Validation FluentValidation Speedup Allocation (valid)
Flat model 6.7 ns 327 ns ~49× 0 B
Nested model 10.1 ns 619 ns ~61× 0 B
Collection (3×) 14.3 ns 2,043 ns ~143× 0 B

See Performance for full benchmark results.

Packages

Package Purpose
ZeroAlloc.Validation Core library — attributes, source generator, ValidationResult
ZeroAlloc.Validation.AspNetCore Auto-validates request models; returns HTTP 422 on failure
ZeroAlloc.Validation.Inject Emits AddZeroAllocValidators() — bulk DI registration in one call
ZeroAlloc.Validation.Options Emits ValidateWithZeroAlloc() — plugs validators into Microsoft.Extensions.Options
ZeroAlloc.Validation.Testing Fluent assertions for unit-testing validators

Features

  • Zero heap allocation on the valid path
  • 25+ built-in validation attributes
  • Nested object and collection validation
  • ASP.NET Core auto-validation (HTTP 422 on failure)
  • Zero-friction DI registration (AddZeroAllocValidators())
  • Source-generated Microsoft.Extensions.Options integration (ValidateWithZeroAlloc())
  • Per-rule severity (Error, Warning, Info)
  • Conditional rules (When / Unless / [SkipWhen])
  • Short-circuit with [StopOnFirstFailure]
  • Custom rules via [Must] predicates or [CustomValidation] methods
  • Testing helpers via ZeroAlloc.Validation.Testing

Documentation

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.2.1 25 3/18/2026
0.2.0 24 3/18/2026
0.1.2 32 3/17/2026
0.1.1 30 3/17/2026