🚀 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 v0.15.4, 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	0.66.6	1.425 s	0.0954 s	0.2722 s	1.384 s
Build_NUnit	4.4.0	1.171 s	0.0670 s	0.1934 s	1.150 s
Build_xUnit	2.9.3	1.149 s	0.0853 s	0.2448 s	1.101 s
Build_MSTest	3.11.0	1.108 s	0.0468 s	0.1365 s	1.103 s
Build_xUnit3	3.1.0	1.144 s	0.0763 s	0.2238 s	1.093 s

ubuntu-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	1.645 s	0.0212 s	0.0188 s	1.645 s
Build_NUnit	4.4.0	1.500 s	0.0294 s	0.0302 s	1.502 s
Build_xUnit	2.9.3	1.513 s	0.0175 s	0.0163 s	1.513 s
Build_MSTest	3.11.0	1.534 s	0.0136 s	0.0127 s	1.539 s
Build_xUnit3	3.1.0	1.496 s	0.0247 s	0.0219 s	1.500 s

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	2.134 s	0.0440 s	0.1275 s	2.143 s
Build_NUnit	4.4.0	2.085 s	0.0360 s	0.0319 s	2.085 s
Build_xUnit	2.9.3	2.055 s	0.0406 s	0.0865 s	2.057 s
Build_MSTest	3.11.0	2.160 s	0.0431 s	0.1142 s	2.152 s
Build_xUnit3	3.1.0	2.136 s	0.0424 s	0.0505 s	2.124 s

Scenario: Tests focused on assertion performance and validation

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	507.19 ms	28.541 ms	83.71 ms	497.91 ms
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	884.34 ms	54.651 ms	160.28 ms	895.71 ms
MSTest	3.11.0	768.27 ms	39.207 ms	115.60 ms	746.33 ms
xUnit3	3.1.0	493.87 ms	16.161 ms	47.40 ms	503.28 ms
TUnit_AOT	0.66.6	70.85 ms	7.276 ms	21.34 ms	67.87 ms

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

ubuntu-latest


BenchmarkDotNet v0.15.4, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.61GHz, 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	0.66.6	487.37 ms	3.093 ms	2.893 ms	487.43 ms
NUnit	4.4.0	908.34 ms	17.276 ms	16.967 ms	911.94 ms
xUnit	2.9.3	984.77 ms	19.259 ms	18.015 ms	979.06 ms
MSTest	3.11.0	836.95 ms	11.507 ms	10.764 ms	832.08 ms
xUnit3	3.1.0	458.16 ms	4.159 ms	3.890 ms	457.83 ms
TUnit_AOT	0.66.6	25.31 ms	0.431 ms	0.382 ms	25.16 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	533.36 ms	3.679 ms	3.441 ms	532.96 ms
NUnit	4.4.0	1,016.18 ms	20.186 ms	34.820 ms	1,015.43 ms
xUnit	2.9.3	1,068.97 ms	20.224 ms	16.888 ms	1,073.74 ms
MSTest	3.11.0	968.58 ms	17.772 ms	31.127 ms	964.24 ms
xUnit3	3.1.0	516.29 ms	7.819 ms	6.931 ms	515.39 ms
TUnit_AOT	0.66.6	65.97 ms	2.281 ms	6.724 ms	65.43 ms

Scenario: Tests running asynchronous operations and async/await patterns

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	608.9 ms	39.85 ms	117.49 ms	577.8 ms
NUnit	4.4.0	1,260.3 ms	57.30 ms	166.24 ms	1,274.6 ms
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.11.0	1,050.5 ms	41.59 ms	119.99 ms	1,053.4 ms
xUnit3	3.1.0	559.6 ms	21.67 ms	62.18 ms	567.1 ms
TUnit_AOT	0.66.6	144.6 ms	11.89 ms	34.88 ms	145.0 ms

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

ubuntu-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	447.34 ms	3.704 ms	3.465 ms	447.86 ms
NUnit	4.4.0	907.30 ms	17.922 ms	18.404 ms	901.36 ms
xUnit	2.9.3	988.70 ms	19.061 ms	17.830 ms	983.11 ms
MSTest	3.11.0	842.79 ms	16.374 ms	17.520 ms	842.60 ms
xUnit3	3.1.0	460.86 ms	2.968 ms	2.777 ms	459.81 ms
TUnit_AOT	0.66.6	26.67 ms	0.506 ms	0.562 ms	26.78 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	494.36 ms	7.194 ms	6.729 ms	490.64 ms
NUnit	4.4.0	1,005.78 ms	18.596 ms	17.394 ms	1,007.02 ms
xUnit	2.9.3	1,096.34 ms	20.797 ms	22.253 ms	1,097.98 ms
MSTest	3.11.0	962.06 ms	18.672 ms	26.175 ms	957.03 ms
xUnit3	3.1.0	522.65 ms	9.988 ms	9.343 ms	521.69 ms
TUnit_AOT	0.66.6	89.31 ms	2.294 ms	6.728 ms	89.53 ms

Scenario: Simple tests with basic operations and assertions

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	413.11 ms	29.400 ms	85.30 ms	389.28 ms
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.11.0	NA	NA	NA	NA
xUnit3	3.1.0	289.63 ms	7.455 ms	21.51 ms	285.72 ms
TUnit_AOT	0.66.6	66.85 ms	9.402 ms	27.57 ms	61.87 ms

Benchmarks with issues: 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 v0.15.4, 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	0.66.6	466.81 ms	5.399 ms	4.786 ms	466.44 ms
NUnit	4.4.0	919.54 ms	16.718 ms	15.638 ms	919.80 ms
xUnit	2.9.3	994.05 ms	10.533 ms	9.337 ms	992.55 ms
MSTest	3.11.0	853.21 ms	16.534 ms	17.691 ms	854.80 ms
xUnit3	3.1.0	459.93 ms	3.301 ms	2.926 ms	458.96 ms
TUnit_AOT	0.66.6	25.34 ms	0.444 ms	0.415 ms	25.14 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	517.27 ms	4.416 ms	4.130 ms	518.39 ms
NUnit	4.4.0	1,018.48 ms	20.084 ms	19.725 ms	1,014.70 ms
xUnit	2.9.3	1,079.55 ms	19.399 ms	18.145 ms	1,079.08 ms
MSTest	3.11.0	950.05 ms	18.521 ms	21.329 ms	953.91 ms
xUnit3	3.1.0	509.16 ms	6.805 ms	6.365 ms	507.00 ms
TUnit_AOT	0.66.6	66.58 ms	1.505 ms	4.414 ms	65.67 ms

Scenario: Parameterized tests with multiple test cases using data attributes

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	408.74 ms	18.928 ms	55.21 ms	396.30 ms
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.11.0	659.03 ms	22.634 ms	66.38 ms	666.53 ms
xUnit3	3.1.0	377.11 ms	11.684 ms	33.90 ms	379.14 ms
TUnit_AOT	0.66.6	44.69 ms	3.968 ms	11.39 ms	41.36 ms

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

ubuntu-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	460.22 ms	2.117 ms	1.877 ms	460.03 ms
NUnit	4.4.0	909.38 ms	16.413 ms	15.352 ms	917.73 ms
xUnit	2.9.3	1,016.83 ms	18.472 ms	17.279 ms	1,008.66 ms
MSTest	3.11.0	866.29 ms	16.852 ms	18.031 ms	865.01 ms
xUnit3	3.1.0	486.65 ms	3.559 ms	3.155 ms	487.03 ms
TUnit_AOT	0.66.6	28.22 ms	0.343 ms	0.304 ms	28.31 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	550.13 ms	10.668 ms	10.477 ms	545.52 ms
NUnit	4.4.0	1,115.22 ms	22.111 ms	23.658 ms	1,115.33 ms
xUnit	2.9.3	1,209.43 ms	35.495 ms	100.694 ms	1,223.99 ms
MSTest	3.11.0	1,041.10 ms	20.681 ms	23.817 ms	1,038.52 ms
xUnit3	3.1.0	565.34 ms	10.258 ms	9.596 ms	565.75 ms
TUnit_AOT	0.66.6	71.69 ms	1.423 ms	3.410 ms	71.39 ms

Scenario: Tests utilizing class fixtures and shared test context

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	286.49 ms	6.152 ms	17.75 ms	285.41 ms
NUnit	4.4.0	NA	NA	NA	NA
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.11.0	NA	NA	NA	NA
xUnit3	3.1.0	375.36 ms	22.387 ms	66.01 ms	362.13 ms
TUnit_AOT	0.66.6	64.68 ms	6.634 ms	19.03 ms	62.08 ms

Benchmarks with issues: 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 v0.15.4, 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	0.66.6	452.99 ms	3.907 ms	3.263 ms	453.44 ms
NUnit	4.4.0	930.95 ms	14.776 ms	13.821 ms	935.97 ms
xUnit	2.9.3	1,006.26 ms	16.690 ms	15.611 ms	1,000.82 ms
MSTest	3.11.0	850.14 ms	16.934 ms	18.119 ms	852.12 ms
xUnit3	3.1.0	450.19 ms	4.025 ms	3.765 ms	450.09 ms
TUnit_AOT	0.66.6	38.57 ms	1.098 ms	3.220 ms	38.60 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	495.87 ms	8.424 ms	10.653 ms	492.34 ms
NUnit	4.4.0	973.98 ms	19.011 ms	18.671 ms	972.03 ms
xUnit	2.9.3	1,049.78 ms	14.531 ms	13.593 ms	1,044.49 ms
MSTest	3.11.0	916.98 ms	16.913 ms	15.821 ms	912.23 ms
xUnit3	3.1.0	486.78 ms	3.897 ms	3.645 ms	486.01 ms
TUnit_AOT	0.66.6	91.20 ms	1.800 ms	3.152 ms	91.43 ms

Scenario: Tests executing in parallel to test framework parallelization

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	410.22 ms	23.733 ms	69.23 ms	402.84 ms
NUnit	4.4.0	1,342.07 ms	95.053 ms	274.25 ms	1,303.84 ms
xUnit	2.9.3	1,328.93 ms	101.864 ms	300.35 ms	1,301.91 ms
MSTest	3.11.0	NA	NA	NA	NA
xUnit3	3.1.0	470.25 ms	20.347 ms	58.38 ms	468.24 ms
TUnit_AOT	0.66.6	58.77 ms	7.644 ms	21.93 ms	53.57 ms

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

ubuntu-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	442.19 ms	1.731 ms	1.534 ms	441.97 ms
NUnit	4.4.0	918.06 ms	17.680 ms	17.364 ms	921.88 ms
xUnit	2.9.3	983.91 ms	18.873 ms	17.654 ms	979.36 ms
MSTest	3.11.0	838.79 ms	14.777 ms	13.823 ms	844.27 ms
xUnit3	3.1.0	449.58 ms	2.903 ms	2.573 ms	449.82 ms
TUnit_AOT	0.66.6	24.97 ms	0.208 ms	0.184 ms	24.95 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	510.80 ms	3.865 ms	3.616 ms	511.67 ms
NUnit	4.4.0	1,085.21 ms	21.543 ms	37.161 ms	1,079.30 ms
xUnit	2.9.3	1,125.35 ms	22.326 ms	27.418 ms	1,124.00 ms
MSTest	3.11.0	979.31 ms	15.894 ms	14.867 ms	979.73 ms
xUnit3	3.1.0	526.16 ms	5.769 ms	5.396 ms	526.42 ms
TUnit_AOT	0.66.6	65.78 ms	1.726 ms	5.063 ms	65.93 ms

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

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	338.92 ms	19.812 ms	58.105 ms	325.53 ms
NUnit	4.4.0	574.90 ms	9.258 ms	7.228 ms	572.83 ms
xUnit	2.9.3	NA	NA	NA	NA
MSTest	3.11.0	NA	NA	NA	NA
xUnit3	3.1.0	324.91 ms	10.115 ms	29.507 ms	318.54 ms
TUnit_AOT	0.66.6	60.53 ms	8.531 ms	24.613 ms	56.15 ms

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

ubuntu-latest


BenchmarkDotNet v0.15.4, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 2.90GHz, 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	0.66.6	486.94 ms	3.897 ms	3.645 ms	487.44 ms
NUnit	4.4.0	925.61 ms	17.307 ms	16.189 ms	922.59 ms
xUnit	2.9.3	1,085.95 ms	20.200 ms	17.906 ms	1,082.26 ms
MSTest	3.11.0	858.03 ms	16.000 ms	14.966 ms	856.06 ms
xUnit3	3.1.0	491.88 ms	4.490 ms	3.980 ms	489.95 ms
TUnit_AOT	0.66.6	40.90 ms	0.680 ms	0.636 ms	40.67 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	560.34 ms	10.543 ms	9.862 ms	559.08 ms
NUnit	4.4.0	1,072.50 ms	20.980 ms	45.608 ms	1,074.71 ms
xUnit	2.9.3	1,232.15 ms	24.387 ms	26.094 ms	1,232.77 ms
MSTest	3.11.0	994.43 ms	19.847 ms	54.995 ms	991.14 ms
xUnit3	3.1.0	580.80 ms	11.371 ms	15.180 ms	581.16 ms
TUnit_AOT	0.66.6	81.43 ms	2.104 ms	6.203 ms	82.90 ms

Scenario: Tests with setup and teardown lifecycle methods

macos-latest


BenchmarkDotNet v0.15.4, 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	0.66.6	525.73 ms	37.455 ms	108.66 ms	518.72 ms
NUnit	4.4.0	1,163.42 ms	50.082 ms	143.69 ms	1,154.49 ms
xUnit	2.9.3	1,063.35 ms	38.811 ms	113.83 ms	1,063.37 ms
MSTest	3.11.0	864.08 ms	79.507 ms	234.43 ms	768.70 ms
xUnit3	3.1.0	389.16 ms	18.371 ms	53.59 ms	391.37 ms
TUnit_AOT	0.66.6	50.16 ms	6.305 ms	18.19 ms	48.60 ms

ubuntu-latest


BenchmarkDotNet v0.15.4, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
AMD EPYC 7763 3.14GHz, 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	0.66.6	467.37 ms	2.088 ms	1.953 ms	467.00 ms
NUnit	4.4.0	937.52 ms	18.192 ms	19.465 ms	935.06 ms
xUnit	2.9.3	1,033.10 ms	18.060 ms	16.894 ms	1,028.90 ms
MSTest	3.11.0	885.00 ms	17.336 ms	17.026 ms	882.50 ms
xUnit3	3.1.0	465.87 ms	3.757 ms	3.331 ms	465.39 ms
TUnit_AOT	0.66.6	26.79 ms	0.208 ms	0.174 ms	26.82 ms

windows-latest


BenchmarkDotNet v0.15.4, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) (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	0.66.6	527.84 ms	10.425 ms	24.160 ms	521.87 ms
NUnit	4.4.0	1,069.13 ms	21.368 ms	22.864 ms	1,069.02 ms
xUnit	2.9.3	1,152.17 ms	22.381 ms	29.102 ms	1,160.05 ms
MSTest	3.11.0	994.82 ms	19.730 ms	21.929 ms	994.32 ms
xUnit3	3.1.0	544.24 ms	10.540 ms	14.071 ms	543.06 ms
TUnit_AOT	0.66.6	68.69 ms	2.349 ms	6.815 ms	68.38 ms

Name		Name	Last commit message	Last commit date
Latest commit History 4,147 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.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
aot_output.txt		aot_output.txt
build_log.txt		build_log.txt
build_output.txt		build_output.txt
debug_output.txt		debug_output.txt
debug_output2.txt		debug_output2.txt
debug_output3.txt		debug_output3.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
pr_failures.txt		pr_failures.txt
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
test_output.txt		test_output.txt

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🚀 The Modern Testing Framework for .NET

⚡ Why Choose TUnit?

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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