🚀 The Modern Testing Framework for .NET

TUnit is a next-generation testing framework for C# that outpaces traditional frameworks with source-generated tests, parallel execution by default, and Native AOT support. Built on the modern Microsoft.Testing.Platform, TUnit delivers faster test runs, better developer experience, and unmatched flexibility.

⚡ Why Choose TUnit?

Feature	Traditional Frameworks	TUnit
Test Discovery	❌ Runtime reflection	✅ Compile-time generation
Execution Speed	❌ Sequential by default	✅ Parallel by default
Modern .NET	⚠️ Limited AOT support	✅ Full Native AOT & trimming
Test Dependencies	❌ Not supported	✅ `[DependsOn]` chains
Resource Management	❌ Manual lifecycle	✅ Intelligent cleanup

⚡ Parallel by Default - Tests run concurrently with intelligent dependency management

🎯 Compile-Time Discovery - Know your test structure before runtime

🔧 Modern .NET Ready - Native AOT, trimming, and latest .NET features

🎭 Extensible - Customize data sources, attributes, and test behavior

📚 Complete Documentation & Learning Center

🚀 New to TUnit? Start with our Getting Started Guide

🔄 Migrating? See our Migration Guides

🎯 Advanced Features? Explore Data-Driven Testing, Test Dependencies, and Parallelism Control

🏁 Quick Start

Using the Project Template (Recommended)

dotnet new install TUnit.Templates
dotnet new TUnit -n "MyTestProject"

Manual Installation

dotnet add package TUnit --prerelease

📖 📚 Complete Documentation & Guides - Everything you need to master TUnit

✨ Key Features

🚀 Performance & Modern Platform

🔥 Source-generated tests (no reflection)
⚡ Parallel execution by default
🚀 Native AOT & trimming support
📈 Optimized for performance

🎯 Advanced Test Control

🔗 Test dependencies with [DependsOn]
🎛️ Parallel limits & custom scheduling
🛡️ Built-in analyzers & compile-time checks
🎭 Custom attributes & extensible conditions

📊 Rich Data & Assertions

📋 Multiple data sources ([Arguments], [Matrix], [ClassData])
✅ Fluent async assertions
🔄 Smart retry logic & conditional execution
📝 Rich test metadata & context

🔧 Developer Experience

💉 Full dependency injection support
🪝 Comprehensive lifecycle hooks
🎯 IDE integration (VS, Rider, VS Code)
📚 Extensive documentation & examples

📝 Simple Test Example

[Test]
public async Task User_Creation_Should_Set_Timestamp()
{
    // Arrange
    var userService = new UserService();

    // Act
    var user = await userService.CreateUserAsync("[email protected]");

    // Assert - TUnit's fluent assertions
    await Assert.That(user.CreatedAt)
        .IsEqualTo(DateTime.Now)
        .Within(TimeSpan.FromMinutes(1));

    await Assert.That(user.Email)
        .IsEqualTo("[email protected]");
}

🎯 Data-Driven Testing

[Test]
[Arguments("[email protected]", "ValidPassword123")]
[Arguments("[email protected]", "AnotherPassword456")]
[Arguments("[email protected]", "AdminPass789")]
public async Task User_Login_Should_Succeed(string email, string password)
{
    var result = await authService.LoginAsync(email, password);
    await Assert.That(result.IsSuccess).IsTrue();
}

// Matrix testing - tests all combinations
[Test]
[MatrixDataSource]
public async Task Database_Operations_Work(
    [Matrix("Create", "Update", "Delete")] string operation,
    [Matrix("User", "Product", "Order")] string entity)
{
    await Assert.That(await ExecuteOperation(operation, entity))
        .IsTrue();
}

🔗 Advanced Test Orchestration

[Before(Class)]
public static async Task SetupDatabase(ClassHookContext context)
{
    await DatabaseHelper.InitializeAsync();
}

[Test, DisplayName("Register a new account")]
[MethodDataSource(nameof(GetTestUsers))]
public async Task Register_User(string username, string password)
{
    // Test implementation
}

[Test, DependsOn(nameof(Register_User))]
[Retry(3)] // Retry on failure
public async Task Login_With_Registered_User(string username, string password)
{
    // This test runs after Register_User completes
}

[Test]
[ParallelLimit<LoadTestParallelLimit>] // Custom parallel control
[Repeat(100)] // Run 100 times
public async Task Load_Test_Homepage()
{
    // Performance testing
}

// Custom attributes
[Test, WindowsOnly, RetryOnHttpError(5)]
public async Task Windows_Specific_Feature()
{
    // Platform-specific test with custom retry logic
}

public class LoadTestParallelLimit : IParallelLimit
{
    public int Limit => 10; // Limit to 10 concurrent executions
}

🔧 Smart Test Control

// Custom conditional execution
public class WindowsOnlyAttribute : SkipAttribute
{
    public WindowsOnlyAttribute() : base("Windows only test") { }

    public override Task<bool> ShouldSkip(TestContext testContext)
        => Task.FromResult(!OperatingSystem.IsWindows());
}

// Custom retry logic
public class RetryOnHttpErrorAttribute : RetryAttribute
{
    public RetryOnHttpErrorAttribute(int times) : base(times) { }

    public override Task<bool> ShouldRetry(TestInformation testInformation,
        Exception exception, int currentRetryCount)
        => Task.FromResult(exception is HttpRequestException { StatusCode: HttpStatusCode.ServiceUnavailable });
}

🎯 Perfect For Every Testing Scenario

🧪 Unit Testing

[Test]
[Arguments(1, 2, 3)]
[Arguments(5, 10, 15)]
public async Task Calculate_Sum(int a, int b, int expected)
{
    await Assert.That(Calculator.Add(a, b))
        .IsEqualTo(expected);
}

Fast, isolated, and reliable

🔗 Integration Testing

[Test, DependsOn(nameof(CreateUser))]
public async Task Login_After_Registration()
{
    // Runs after CreateUser completes
    var result = await authService.Login(user);
    await Assert.That(result.IsSuccess).IsTrue();
}

Stateful workflows made simple

⚡ Load Testing

[Test]
[ParallelLimit<LoadTestLimit>]
[Repeat(1000)]
public async Task API_Handles_Concurrent_Requests()
{
    await Assert.That(await httpClient.GetAsync("/api/health"))
        .HasStatusCode(HttpStatusCode.OK);
}

Built-in performance testing

🚀 What Makes TUnit Different?

Compile-Time Intelligence

Tests are discovered at build time, not runtime - enabling faster discovery, better IDE integration, and precise resource lifecycle management.

Parallel-First Architecture

Built for concurrency from day one with [DependsOn] for test chains, [ParallelLimit] for resource control, and intelligent scheduling.

Extensible by Design

The DataSourceGenerator<T> pattern and custom attribute system let you extend TUnit's capabilities without modifying core framework code.

🏆 Community & Ecosystem

🌟 Join thousands of developers modernizing their testing

🤝 Active Community

📚 Official Documentation - Comprehensive guides, tutorials, and API reference
💬 GitHub Discussions - Get help and share ideas
🐛 Issue Tracking - Report bugs and request features
📢 Release Notes - Stay updated with latest improvements

🛠️ IDE Support

TUnit works seamlessly across all major .NET development environments:

Visual Studio (2022 17.13+)

✅ Fully supported - No additional configuration needed for latest versions

⚙️ Earlier versions: Enable "Use testing platform server mode" in Tools > Manage Preview Features

JetBrains Rider

✅ Fully supported

⚙️ Setup: Enable "Testing Platform support" in Settings > Build, Execution, Deployment > Unit Testing > VSTest

Visual Studio Code

✅ Fully supported

⚙️ Setup: Install C# Dev Kit and enable "Use Testing Platform Protocol"

Command Line

✅ Full CLI support - Works with dotnet test, dotnet run, and direct executable execution

📦 Package Options

Package	Use Case
`TUnit`	⭐ Start here - Complete testing framework (includes Core + Engine + Assertions)
`TUnit.Core`	📚 Test libraries and shared components (no execution engine)
`TUnit.Engine`	🚀 Test execution engine and adapter (for test projects)
`TUnit.Assertions`	✅ Standalone assertions (works with any test framework)
`TUnit.Playwright`	🎭 Playwright integration with automatic lifecycle management

🎯 Migration from Other Frameworks

Coming from NUnit or xUnit? TUnit maintains familiar syntax while adding modern capabilities:

// Enhanced with TUnit's advanced features
[Test]
[Arguments("value1")]
[Arguments("value2")]
[Retry(3)]
[ParallelLimit<CustomLimit>]
public async Task Modern_TUnit_Test(string value) { }

📖 Need help migrating? Check our detailed Migration Guides with step-by-step instructions for xUnit, NUnit, and MSTest.

💡 Current Status

The API is mostly stable, but may have some changes based on feedback or issues before v1.0 release.

🚀 Ready to Experience the Future of .NET Testing?

⚡ Start in 30 Seconds

# Create a new test project with examples
dotnet new install TUnit.Templates && dotnet new TUnit -n "MyAwesomeTests"

# Or add to existing project
dotnet add package TUnit --prerelease

🎯 Why Wait? Join the Movement

📈 Performance

Optimized execution Parallel by default Zero reflection overhead

🔮 Future-Ready

Native AOT support Latest .NET features Source generation

🛠️ Developer Experience

Compile-time checks Rich IDE integration Intelligent debugging

🎭 Flexibility

Test dependencies Custom attributes Extensible architecture

📖 Learn More: tunit.dev | 💬 Get Help: GitHub Discussions | ⭐ Show Support: Star on GitHub

TUnit is actively developed and production-ready. Join our growing community of developers who've made the switch!

Performance Benchmark

Scenario: Building the test project

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
Build_TUnit	0.57.65	1.720 s	0.1211 s	0.3474 s	1.688 s
Build_NUnit	4.4.0	1.506 s	0.1370 s	0.3974 s	1.406 s
Build_xUnit	2.9.3	1.225 s	0.0853 s	0.2461 s	1.209 s
Build_MSTest	3.10.4	1.596 s	0.1094 s	0.3209 s	1.526 s

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
Build_TUnit	0.57.65	1.927 s	0.0337 s	0.0544 s	1.911 s
Build_NUnit	4.4.0	1.594 s	0.0214 s	0.0189 s	1.594 s
Build_xUnit	2.9.3	1.600 s	0.0259 s	0.0242 s	1.596 s
Build_MSTest	3.10.4	1.597 s	0.0188 s	0.0167 s	1.601 s

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
Build_TUnit	0.57.65	1.868 s	0.0367 s	0.0624 s	1.849 s
Build_NUnit	4.4.0	1.585 s	0.0260 s	0.0230 s	1.587 s
Build_xUnit	2.9.3	1.581 s	0.0255 s	0.0239 s	1.584 s
Build_MSTest	3.10.4	1.588 s	0.0244 s	0.0216 s	1.593 s

Scenario: Tests focused on assertion performance and validation

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.NUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.xUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.NUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.xUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.NUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.xUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

Scenario: Tests running asynchronous operations and async/await patterns

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	123.1 ms	2.38 ms	3.41 ms	123.5 ms
TUnit	0.57.65	591.8 ms	13.22 ms	38.76 ms	590.0 ms
NUnit	4.4.0	830.3 ms	23.71 ms	69.54 ms	803.1 ms
xUnit	2.9.3	860.6 ms	20.52 ms	60.18 ms	857.9 ms
MSTest	3.10.4	766.4 ms	14.88 ms	37.05 ms	768.6 ms

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	27.05 ms	0.210 ms	0.196 ms	27.04 ms
TUnit	0.57.65	937.72 ms	18.330 ms	19.613 ms	940.02 ms
NUnit	4.4.0	1,314.71 ms	15.216 ms	12.706 ms	1,317.01 ms
xUnit	2.9.3	1,412.23 ms	11.098 ms	10.381 ms	1,410.31 ms
MSTest	3.10.4	1,259.81 ms	11.291 ms	10.009 ms	1,259.14 ms

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	77.02 ms	1.528 ms	1.759 ms	77.94 ms
TUnit	0.57.65	1,110.27 ms	21.858 ms	38.283 ms	1,112.60 ms
NUnit	4.4.0	1,567.70 ms	30.543 ms	35.173 ms	1,561.86 ms
xUnit	2.9.3	1,609.21 ms	31.302 ms	43.880 ms	1,605.71 ms
MSTest	3.10.4	1,434.68 ms	28.666 ms	33.012 ms	1,434.17 ms

Scenario: Simple tests with basic operations and assertions

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	149.9 ms	8.05 ms	22.97 ms	139.9 ms
TUnit	0.57.65	1,015.2 ms	94.06 ms	263.74 ms	934.6 ms
NUnit	4.4.0	1,971.4 ms	134.19 ms	391.44 ms	1,981.6 ms
xUnit	2.9.3	1,423.5 ms	89.54 ms	262.59 ms	1,350.7 ms
MSTest	3.10.4	1,481.9 ms	138.73 ms	406.87 ms	1,440.3 ms

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	27.34 ms	0.328 ms	0.274 ms	27.24 ms
TUnit	0.57.65	972.23 ms	18.968 ms	19.478 ms	967.38 ms
NUnit	4.4.0	1,362.72 ms	13.425 ms	12.557 ms	1,367.15 ms
xUnit	2.9.3	1,448.69 ms	7.724 ms	7.225 ms	1,450.27 ms
MSTest	3.10.4	1,326.06 ms	12.214 ms	11.425 ms	1,323.27 ms

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	61.08 ms	1.221 ms	1.142 ms	60.70 ms
TUnit	0.57.65	1,012.23 ms	19.738 ms	21.120 ms	1,008.24 ms
NUnit	4.4.0	1,370.23 ms	9.054 ms	8.469 ms	1,369.41 ms
xUnit	2.9.3	1,433.64 ms	11.200 ms	9.929 ms	1,431.39 ms
MSTest	3.10.4	1,317.50 ms	8.266 ms	7.732 ms	1,316.87 ms

Scenario: Parameterized tests with multiple test cases using data attributes

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	965.4 ms	42.94 ms	125.2 ms	955.7 ms
xUnit	2.9.3	1,128.4 ms	45.52 ms	130.6 ms	1,111.3 ms
MSTest	3.10.4	1,077.2 ms	45.40 ms	132.4 ms	1,068.5 ms

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0)

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	1.322 s	0.0124 s	0.0116 s	1.321 s
xUnit	2.9.3	1.392 s	0.0118 s	0.0110 s	1.393 s
MSTest	3.10.4	1.267 s	0.0141 s	0.0132 s	1.266 s

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0)

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	1.365 s	0.0127 s	0.0118 s	1.361 s
xUnit	2.9.3	1.418 s	0.0168 s	0.0149 s	1.417 s
MSTest	3.10.4	1.309 s	0.0124 s	0.0116 s	1.307 s

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0)

Scenario: Tests utilizing class fixtures and shared test context

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	132.2 ms	6.30 ms	17.86 ms	129.6 ms
TUnit	0.57.65	833.2 ms	72.47 ms	212.55 ms	765.2 ms
NUnit	4.4.0	1,377.4 ms	99.91 ms	293.02 ms	1,365.2 ms
xUnit	2.9.3	1,393.0 ms	79.93 ms	235.67 ms	1,415.0 ms
MSTest	3.10.4	1,370.5 ms	87.51 ms	258.02 ms	1,362.3 ms

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	25.75 ms	0.141 ms	0.125 ms	25.74 ms
TUnit	0.57.65	942.70 ms	18.569 ms	19.868 ms	939.53 ms
NUnit	4.4.0	1,306.37 ms	8.076 ms	7.554 ms	1,307.66 ms
xUnit	2.9.3	1,385.40 ms	9.243 ms	8.646 ms	1,386.91 ms
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	53.49 ms	1.060 ms	1.041 ms	53.65 ms
TUnit	0.57.65	1,018.49 ms	19.747 ms	27.029 ms	1,010.79 ms
NUnit	4.4.0	1,360.82 ms	9.107 ms	8.518 ms	1,362.76 ms
xUnit	2.9.3	1,426.52 ms	14.223 ms	13.305 ms	1,427.84 ms
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

Scenario: Tests executing in parallel to test framework parallelization

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	106.4 ms	1.19 ms	1.11 ms	106.2 ms
TUnit	0.57.65	591.4 ms	14.57 ms	42.72 ms	587.3 ms
NUnit	4.4.0	782.2 ms	15.58 ms	38.52 ms	785.1 ms
xUnit	2.9.3	815.9 ms	15.81 ms	43.29 ms	816.1 ms
MSTest	3.10.4	759.1 ms	15.11 ms	37.91 ms	765.0 ms

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	25.51 ms	0.231 ms	0.193 ms	25.51 ms
TUnit	0.57.65	926.72 ms	17.916 ms	20.632 ms	921.35 ms
NUnit	4.4.0	1,305.33 ms	12.137 ms	11.353 ms	1,305.46 ms
xUnit	2.9.3	1,372.83 ms	16.396 ms	15.337 ms	1,373.94 ms
MSTest	3.10.4	1,241.17 ms	7.513 ms	6.660 ms	1,243.21 ms

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	48.23 ms	0.956 ms	1.700 ms	47.52 ms
TUnit	0.57.65	976.54 ms	19.292 ms	22.966 ms	965.94 ms
NUnit	4.4.0	1,320.26 ms	13.801 ms	12.910 ms	1,322.08 ms
xUnit	2.9.3	1,373.55 ms	9.190 ms	8.597 ms	1,376.04 ms
MSTest	3.10.4	1,264.97 ms	17.518 ms	16.387 ms	1,262.05 ms

Scenario: A test that takes 50ms to execute, repeated 100 times

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.NUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.xUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.NUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.xUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	NA	NA	NA	NA
TUnit	0.57.65	NA	NA	NA	NA
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.10.4	NA	NA	NA	NA

Benchmarks with issues: RuntimeBenchmarks.TUnit_AOT: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.TUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.NUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.xUnit: Job-YNJDZW(Runtime=.NET 9.0) RuntimeBenchmarks.MSTest: Job-YNJDZW(Runtime=.NET 9.0)

Scenario: Tests with setup and teardown lifecycle methods

macos-latest


BenchmarkDotNet v0.15.2, macOS Sequoia 15.6 (24G84) [Darwin 24.6.0]
Apple M1 (Virtual), 1 CPU, 3 logical and 3 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), Arm64 RyuJIT AdvSIMD

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	110.1 ms	2.19 ms	2.24 ms	110.1 ms
TUnit	0.57.65	749.5 ms	56.70 ms	166.28 ms	712.5 ms
NUnit	4.4.0	1,251.4 ms	78.66 ms	231.92 ms	1,244.6 ms
xUnit	2.9.3	1,091.6 ms	56.81 ms	167.49 ms	1,091.3 ms
MSTest	3.10.4	1,005.1 ms	56.50 ms	166.58 ms	998.9 ms

ubuntu-latest


BenchmarkDotNet v0.15.2, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	28.91 ms	0.569 ms	0.740 ms	28.97 ms
TUnit	0.57.65	975.64 ms	19.081 ms	21.208 ms	966.77 ms
NUnit	4.4.0	1,354.43 ms	17.494 ms	16.364 ms	1,352.03 ms
xUnit	2.9.3	1,419.93 ms	12.257 ms	11.465 ms	1,422.75 ms
MSTest	3.10.4	1,300.80 ms	15.781 ms	14.762 ms	1,298.17 ms

windows-latest


BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4052) (Hyper-V)
AMD EPYC 7763 2.44GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2
  Job-YNJDZW : .NET 9.0.9 (9.0.925.41916), X64 RyuJIT AVX2

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.57.65	54.45 ms	1.038 ms	0.971 ms	54.63 ms
TUnit	0.57.65	1,028.44 ms	20.089 ms	26.819 ms	1,017.64 ms
NUnit	4.4.0	1,392.99 ms	22.662 ms	21.198 ms	1,395.44 ms
xUnit	2.9.3	1,460.48 ms	20.444 ms	19.124 ms	1,453.22 ms
MSTest	3.10.4	1,337.28 ms	13.710 ms	12.824 ms	1,331.76 ms

Name		Name	Last commit message	Last commit date
Latest commit History 3,939 Commits
.claude/commands		.claude/commands
.config		.config
.github		.github
.idea/.idea.TUnit/.idea		.idea/.idea.TUnit/.idea
.serena		.serena
.vscode		.vscode
Examples		Examples
Playground		Playground
Snapshots/TUnit._.verified/std-streams		Snapshots/TUnit._.verified/std-streams
TUnit.AOT.Tests		TUnit.AOT.Tests
TUnit.Analyzers.CodeFixers		TUnit.Analyzers.CodeFixers
TUnit.Analyzers.Roslyn414		TUnit.Analyzers.Roslyn414
TUnit.Analyzers.Roslyn44		TUnit.Analyzers.Roslyn44
TUnit.Analyzers.Roslyn47		TUnit.Analyzers.Roslyn47
TUnit.Analyzers.Tests		TUnit.Analyzers.Tests
TUnit.Analyzers		TUnit.Analyzers
TUnit.Assertions.Analyzers.CodeFixers.Tests		TUnit.Assertions.Analyzers.CodeFixers.Tests
TUnit.Assertions.Analyzers.CodeFixers		TUnit.Assertions.Analyzers.CodeFixers
TUnit.Assertions.Analyzers.Tests		TUnit.Assertions.Analyzers.Tests
TUnit.Assertions.Analyzers		TUnit.Assertions.Analyzers
TUnit.Assertions.FSharp		TUnit.Assertions.FSharp
TUnit.Assertions.SourceGenerator.Tests		TUnit.Assertions.SourceGenerator.Tests
TUnit.Assertions.SourceGenerator		TUnit.Assertions.SourceGenerator
TUnit.Assertions.Tests		TUnit.Assertions.Tests
TUnit.Assertions		TUnit.Assertions
TUnit.Core.SourceGenerator.Roslyn414		TUnit.Core.SourceGenerator.Roslyn414
TUnit.Core.SourceGenerator.Roslyn44		TUnit.Core.SourceGenerator.Roslyn44
TUnit.Core.SourceGenerator.Roslyn47		TUnit.Core.SourceGenerator.Roslyn47
TUnit.Core.SourceGenerator.Tests		TUnit.Core.SourceGenerator.Tests
TUnit.Core.SourceGenerator		TUnit.Core.SourceGenerator
TUnit.Core.Tests/Helpers		TUnit.Core.Tests/Helpers
TUnit.Core		TUnit.Core
TUnit.Engine.Tests		TUnit.Engine.Tests
TUnit.Engine		TUnit.Engine
TUnit.Example.Asp.Net.TestProject		TUnit.Example.Asp.Net.TestProject
TUnit.Example.Asp.Net		TUnit.Example.Asp.Net
TUnit.Example		TUnit.Example
TUnit.IntegrationTests		TUnit.IntegrationTests
TUnit.Performance.Tests		TUnit.Performance.Tests
TUnit.Pipeline		TUnit.Pipeline
TUnit.Playwright		TUnit.Playwright
TUnit.PublicAPI		TUnit.PublicAPI
TUnit.RpcTests		TUnit.RpcTests
TUnit.Templates.Tests		TUnit.Templates.Tests
TUnit.Templates		TUnit.Templates
TUnit.TestProject.FSharp		TUnit.TestProject.FSharp
TUnit.TestProject.Library		TUnit.TestProject.Library
TUnit.TestProject.VB.NET		TUnit.TestProject.VB.NET
TUnit.TestProject		TUnit.TestProject
TUnit.UnitTests		TUnit.UnitTests
TUnit		TUnit
assets		assets
docs		docs
tools		tools
.editorconfig		.editorconfig
.gitattributes		.gitattributes
.gitignore		.gitignore
Analyzer.props		Analyzer.props
CLAUDE.md		CLAUDE.md
Directory.Build.props		Directory.Build.props
Directory.Build.targets		Directory.Build.targets
Directory.Packages.props		Directory.Packages.props
GitVersion.yml		GitVersion.yml
KNOWN_ISSUES.md		KNOWN_ISSUES.md
LICENSE		LICENSE
Library.props		Library.props
Library.targets		Library.targets
Polyfill.targets		Polyfill.targets
README.md		README.md
README_Template.md		README_Template.md
Roslyn.props		Roslyn.props
SourceGenerationDebug.props		SourceGenerationDebug.props
SourceGenerator.props		SourceGenerator.props
TUnit-Innovative-Features-Implementation-Plan.md		TUnit-Innovative-Features-Implementation-Plan.md
TUnit.props		TUnit.props
TUnit.sln		TUnit.sln
TestLibrary.props		TestLibrary.props
TestLibrary.targets		TestLibrary.targets
TestProject.props		TestProject.props
TestProject.targets		TestProject.targets
build_log.txt		build_log.txt
build_output.txt		build_output.txt
dotnet-install.sh		dotnet-install.sh
dotnet-install.sh.1		dotnet-install.sh.1
global.json		global.json
hook_changes.patch		hook_changes.patch
package.json		package.json
renovate.json		renovate.json
rider.png		rider.png
run-all-engine-tests.ps1		run-all-engine-tests.ps1
run-aot-tests.ps1		run-aot-tests.ps1
run-reflection-tests.ps1		run-reflection-tests.ps1
run-singlefile-tests.ps1		run-singlefile-tests.ps1
run-source-generation-tests-verbose.ps1		run-source-generation-tests-verbose.ps1
run-source-generation-tests.ps1		run-source-generation-tests.ps1
strongname.snk		strongname.snk

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🚀 The Modern Testing Framework for .NET

⚡ Why Choose TUnit?

📚 Complete Documentation & Learning Center

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Performance Benchmark

Scenario: Building the test project

macos-latest

ubuntu-latest

windows-latest

Scenario: Tests focused on assertion performance and validation

macos-latest

ubuntu-latest

windows-latest

Scenario: Tests running asynchronous operations and async/await patterns

macos-latest

ubuntu-latest

windows-latest

Scenario: Simple tests with basic operations and assertions

macos-latest

ubuntu-latest

windows-latest

Scenario: Parameterized tests with multiple test cases using data attributes

macos-latest

ubuntu-latest

windows-latest

Scenario: Tests utilizing class fixtures and shared test context

macos-latest

ubuntu-latest

windows-latest

Scenario: Tests executing in parallel to test framework parallelization

macos-latest

ubuntu-latest

windows-latest

Scenario: A test that takes 50ms to execute, repeated 100 times

macos-latest

ubuntu-latest

windows-latest

Scenario: Tests with setup and teardown lifecycle methods

macos-latest

ubuntu-latest

windows-latest