🚀 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 v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
Build_TUnit	0.61.2	1,170.4 ms	42.14 ms	121.59 ms	1,159.2 ms
Build_NUnit	4.4.0	982.9 ms	34.13 ms	100.10 ms	941.9 ms
Build_xUnit	2.9.3	939.6 ms	34.81 ms	102.63 ms	887.0 ms
Build_MSTest	3.10.4	1,004.5 ms	32.55 ms	95.47 ms	994.7 ms

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
Build_TUnit	0.61.2	1.814 s	0.0344 s	0.0321 s	1.815 s
Build_NUnit	4.4.0	1.511 s	0.0139 s	0.0130 s	1.512 s
Build_xUnit	2.9.3	1.527 s	0.0161 s	0.0142 s	1.529 s
Build_MSTest	3.10.4	1.516 s	0.0114 s	0.0107 s	1.519 s

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
Build_TUnit	0.61.2	1.915 s	0.0311 s	0.0276 s	1.918 s
Build_NUnit	4.4.0	1.595 s	0.0270 s	0.0252 s	1.599 s
Build_xUnit	2.9.3	1.585 s	0.0172 s	0.0152 s	1.590 s
Build_MSTest	3.10.4	1.611 s	0.0272 s	0.0254 s	1.609 s

Scenario: Tests focused on assertion performance and validation

macos-latest


BenchmarkDotNet v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	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 v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	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 v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	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 v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	150.6 ms	3.50 ms	9.52 ms	147.6 ms
TUnit	0.61.2	881.8 ms	32.75 ms	96.06 ms	869.0 ms
NUnit	4.4.0	1,332.2 ms	55.34 ms	161.44 ms	1,330.6 ms
xUnit	2.9.3	1,305.7 ms	46.16 ms	136.10 ms	1,307.4 ms
MSTest	3.10.4	1,134.5 ms	44.33 ms	128.60 ms	1,113.4 ms

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	26.70 ms	0.534 ms	0.548 ms	26.41 ms
TUnit	0.61.2	926.51 ms	18.412 ms	20.465 ms	923.46 ms
NUnit	4.4.0	1,294.72 ms	8.803 ms	8.235 ms	1,294.18 ms
xUnit	2.9.3	1,397.16 ms	8.101 ms	7.578 ms	1,397.93 ms
MSTest	3.10.4	1,248.78 ms	9.050 ms	8.466 ms	1,250.14 ms

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	62.38 ms	0.193 ms	0.171 ms	62.41 ms
TUnit	0.61.2	986.67 ms	19.163 ms	24.917 ms	972.03 ms
NUnit	4.4.0	1,364.34 ms	16.889 ms	15.798 ms	1,368.18 ms
xUnit	2.9.3	1,450.47 ms	10.318 ms	9.147 ms	1,452.91 ms
MSTest	3.10.4	1,322.40 ms	26.176 ms	28.008 ms	1,311.00 ms

Scenario: Simple tests with basic operations and assertions

macos-latest


BenchmarkDotNet v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	242.9 ms	27.82 ms	82.03 ms	239.3 ms
TUnit	0.61.2	1,154.0 ms	76.26 ms	224.86 ms	1,152.9 ms
NUnit	4.4.0	1,682.0 ms	117.63 ms	346.85 ms	1,761.3 ms
xUnit	2.9.3	1,233.7 ms	47.58 ms	138.79 ms	1,218.6 ms
MSTest	3.10.4	1,164.4 ms	70.58 ms	205.89 ms	1,127.9 ms

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	27.90 ms	0.557 ms	0.494 ms	27.72 ms
TUnit	0.61.2	974.56 ms	19.207 ms	22.864 ms	974.14 ms
NUnit	4.4.0	1,376.49 ms	14.116 ms	12.514 ms	1,376.14 ms
xUnit	2.9.3	1,452.99 ms	13.206 ms	11.707 ms	1,451.57 ms
MSTest	3.10.4	1,344.57 ms	14.546 ms	13.606 ms	1,347.15 ms

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	58.87 ms	1.172 ms	2.285 ms	57.71 ms
TUnit	0.61.2	992.84 ms	19.609 ms	26.842 ms	977.26 ms
NUnit	4.4.0	1,345.01 ms	8.605 ms	8.049 ms	1,345.15 ms
xUnit	2.9.3	1,398.69 ms	8.313 ms	7.369 ms	1,399.00 ms
MSTest	3.10.4	1,297.70 ms	14.302 ms	13.378 ms	1,297.22 ms

Scenario: Parameterized tests with multiple test cases using data attributes

macos-latest


BenchmarkDotNet v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	NA	NA	NA	NA
NUnit	4.4.0	1.269 s	0.0804 s	0.2347 s	1.239 s
xUnit	2.9.3	1.280 s	0.0736 s	0.2169 s	1.232 s
MSTest	3.10.4	1.314 s	0.0910 s	0.2682 s	1.307 s

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

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	NA	NA	NA	NA
NUnit	4.4.0	1.377 s	0.0156 s	0.0146 s	1.375 s
xUnit	2.9.3	1.448 s	0.0107 s	0.0100 s	1.445 s
MSTest	3.10.4	1.322 s	0.0134 s	0.0118 s	1.321 s

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

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	NA	NA	NA	NA
NUnit	4.4.0	1.415 s	0.0252 s	0.0235 s	1.412 s
xUnit	2.9.3	1.398 s	0.0196 s	0.0183 s	1.407 s
MSTest	3.10.4	1.278 s	0.0249 s	0.0266 s	1.270 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 v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	256.1 ms	19.79 ms	58.03 ms	250.1 ms
TUnit	0.61.2	1,043.5 ms	78.62 ms	230.59 ms	1,052.8 ms
NUnit	4.4.0	1,121.9 ms	104.40 ms	307.84 ms	969.7 ms
xUnit	2.9.3	858.7 ms	25.19 ms	74.28 ms	854.1 ms
MSTest	3.10.4	793.4 ms	15.79 ms	42.69 ms	794.1 ms

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	27.11 ms	0.232 ms	0.194 ms	27.09 ms
TUnit	0.61.2	938.34 ms	18.432 ms	20.487 ms	939.40 ms
NUnit	4.4.0	1,301.77 ms	8.705 ms	7.717 ms	1,303.23 ms
xUnit	2.9.3	1,377.75 ms	10.216 ms	8.531 ms	1,379.43 ms
MSTest	3.10.4	1,246.52 ms	9.031 ms	8.448 ms	1,246.94 ms

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	55.52 ms	1.879 ms	5.541 ms	54.78 ms
TUnit	0.61.2	973.20 ms	19.171 ms	26.874 ms	958.26 ms
NUnit	4.4.0	1,315.93 ms	12.030 ms	11.253 ms	1,316.45 ms
xUnit	2.9.3	1,383.54 ms	16.294 ms	15.241 ms	1,385.02 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 v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	114.4 ms	4.81 ms	13.33 ms	109.5 ms
TUnit	0.61.2	608.4 ms	18.25 ms	53.22 ms	607.9 ms
NUnit	4.4.0	822.8 ms	19.43 ms	55.74 ms	818.5 ms
xUnit	2.9.3	839.0 ms	16.78 ms	41.47 ms	842.4 ms
MSTest	3.10.4	773.4 ms	15.45 ms	41.25 ms	776.8 ms

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	27.55 ms	0.536 ms	0.551 ms	27.33 ms
TUnit	0.61.2	942.44 ms	17.939 ms	18.422 ms	934.26 ms
NUnit	4.4.0	1,355.13 ms	10.891 ms	10.187 ms	1,358.40 ms
xUnit	2.9.3	1,427.53 ms	11.102 ms	10.385 ms	1,428.19 ms
MSTest	3.10.4	1,300.29 ms	9.285 ms	7.754 ms	1,302.97 ms

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	58.14 ms	1.154 ms	3.402 ms	58.91 ms
TUnit	0.61.2	975.81 ms	19.340 ms	25.818 ms	958.05 ms
NUnit	4.4.0	1,350.65 ms	13.990 ms	13.087 ms	1,351.49 ms
xUnit	2.9.3	1,414.29 ms	15.152 ms	14.173 ms	1,408.87 ms
MSTest	3.10.4	1,302.79 ms	12.261 ms	10.869 ms	1,301.63 ms

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

macos-latest


BenchmarkDotNet v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	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 v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.66GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	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 v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	NA	NA	NA	NA
TUnit	0.61.2	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 v0.15.3, macOS Sequoia 15.6.1 (24G90) [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 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	114.3 ms	1.10 ms	1.43 ms	114.1 ms
TUnit	0.61.2	613.6 ms	12.22 ms	34.27 ms	612.2 ms
NUnit	4.4.0	877.4 ms	28.01 ms	80.38 ms	864.9 ms
xUnit	2.9.3	873.4 ms	29.26 ms	86.29 ms	850.5 ms
MSTest	3.10.4	744.5 ms	9.21 ms	7.19 ms	747.3 ms

ubuntu-latest


BenchmarkDotNet v0.15.3, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	28.95 ms	0.575 ms	1.261 ms	28.92 ms
TUnit	0.61.2	934.92 ms	18.180 ms	24.270 ms	928.99 ms
NUnit	4.4.0	1,305.31 ms	9.723 ms	8.119 ms	1,308.16 ms
xUnit	2.9.3	1,368.10 ms	5.280 ms	4.681 ms	1,369.14 ms
MSTest	3.10.4	1,258.61 ms	12.081 ms	11.300 ms	1,260.93 ms

windows-latest


BenchmarkDotNet v0.15.3, 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 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3
  Job-YNJDZW : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Runtime=.NET 9.0

Method	Version	Mean	Error	StdDev	Median
TUnit_AOT	0.61.2	64.65 ms	1.046 ms	0.817 ms	64.58 ms
TUnit	0.61.2	995.60 ms	19.393 ms	23.086 ms	987.64 ms
NUnit	4.4.0	1,354.28 ms	16.238 ms	15.189 ms	1,350.60 ms
xUnit	2.9.3	1,416.67 ms	10.143 ms	8.992 ms	1,416.28 ms
MSTest	3.10.4	1,349.30 ms	20.168 ms	18.865 ms	1,345.64 ms

Name		Name	Last commit message	Last commit date
Latest commit History 3,992 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
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?

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📈 Performance

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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