TUnit.Assertions 0.59.0

🚀 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.

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⚡ 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

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📚 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

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🏁 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

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🚀 Performance & Modern Platform

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

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🎯 Advanced Test Control

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

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📊 Rich Data & Assertions

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

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🔧 Developer Experience

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

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📝 Simple Test Example

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

    // Act
    var user = await userService.CreateUserAsync("john.doe@example.com");

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

    await Assert.That(user.Email)
        .IsEqualTo("john.doe@example.com");
}

🎯 Data-Driven Testing

[Test]
[Arguments("user1@test.com", "ValidPassword123")]
[Arguments("user2@test.com", "AnotherPassword456")]
[Arguments("admin@test.com", "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

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🧪 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

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🔗 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

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⚡ 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

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🚀 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

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🌟 Join thousands of developers modernizing their testing

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🤝 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.

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🚀 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

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📈 Performance

Optimized execution Parallel by default Zero reflection overhead

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🔮 Future-Ready

Native AOT support Latest .NET features Source generation

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🛠️ Developer Experience

Compile-time checks Rich IDE integration Intelligent debugging

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🎭 Flexibility

Test dependencies Custom attributes Extensible architecture

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📖 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!

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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	1.511 s	0.1533 s	0.4325 s	1.365 s
Build_NUnit	4.4.0	1.621 s	0.1212 s	0.3498 s	1.619 s
Build_xUnit	2.9.3	1.517 s	0.1183 s	0.3431 s	1.426 s
Build_MSTest	3.10.4	1.648 s	0.1234 s	0.3620 s	1.601 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	1.825 s	0.0328 s	0.0574 s	1.802 s
Build_NUnit	4.4.0	1.513 s	0.0180 s	0.0159 s	1.510 s
Build_xUnit	2.9.3	1.523 s	0.0099 s	0.0092 s	1.521 s
Build_MSTest	3.10.4	1.517 s	0.0094 s	0.0083 s	1.517 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	1.889 s	0.0373 s	0.0754 s	1.871 s
Build_NUnit	4.4.0	1.591 s	0.0193 s	0.0171 s	1.590 s
Build_xUnit	2.9.3	1.619 s	0.0310 s	0.0392 s	1.610 s
Build_MSTest	3.10.4	1.610 s	0.0287 s	0.0268 s	1.599 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	246.9 ms	24.35 ms	71.79 ms	246.7 ms
TUnit	0.57.65	1,015.6 ms	72.56 ms	211.65 ms	968.6 ms
NUnit	4.4.0	1,426.7 ms	125.11 ms	364.97 ms	1,353.7 ms
xUnit	2.9.3	1,389.0 ms	104.94 ms	307.78 ms	1,298.8 ms
MSTest	3.10.4	1,467.2 ms	78.71 ms	230.85 ms	1,457.0 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	28.40 ms	0.261 ms	0.231 ms	28.43 ms
TUnit	0.57.65	956.42 ms	18.967 ms	21.082 ms	950.66 ms
NUnit	4.4.0	1,349.53 ms	15.744 ms	13.957 ms	1,348.72 ms
xUnit	2.9.3	1,456.35 ms	26.979 ms	27.705 ms	1,449.97 ms
MSTest	3.10.4	1,302.83 ms	19.019 ms	16.859 ms	1,301.11 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	63.13 ms	1.262 ms	1.296 ms	62.44 ms
TUnit	0.57.65	992.56 ms	19.604 ms	24.793 ms	988.67 ms
NUnit	4.4.0	1,372.23 ms	14.888 ms	13.926 ms	1,372.98 ms
xUnit	2.9.3	1,470.50 ms	16.520 ms	15.453 ms	1,469.98 ms
MSTest	3.10.4	1,308.63 ms	13.112 ms	12.265 ms	1,310.87 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	195.9 ms	21.53 ms	63.14 ms	175.8 ms
TUnit	0.57.65	1,052.3 ms	75.71 ms	223.23 ms	1,023.1 ms
NUnit	4.4.0	1,438.3 ms	138.37 ms	405.81 ms	1,376.3 ms
xUnit	2.9.3	1,387.7 ms	91.45 ms	268.20 ms	1,352.5 ms
MSTest	3.10.4	1,443.9 ms	82.10 ms	239.50 ms	1,424.0 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	25.85 ms	0.361 ms	0.320 ms	25.80 ms
TUnit	0.57.65	957.14 ms	19.060 ms	22.689 ms	950.47 ms
NUnit	4.4.0	1,310.07 ms	9.769 ms	9.138 ms	1,305.77 ms
xUnit	2.9.3	1,383.96 ms	14.563 ms	13.622 ms	1,387.67 ms
MSTest	3.10.4	1,251.67 ms	10.380 ms	9.710 ms	1,251.34 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	62.20 ms	0.597 ms	0.529 ms	62.36 ms
TUnit	0.57.65	1,101.86 ms	21.606 ms	32.995 ms	1,108.25 ms
NUnit	4.4.0	1,519.96 ms	29.731 ms	34.238 ms	1,525.15 ms
xUnit	2.9.3	1,579.46 ms	31.501 ms	30.938 ms	1,582.17 ms
MSTest	3.10.4	1,460.47 ms	27.903 ms	28.654 ms	1,457.01 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	869.5 ms	25.52 ms	74.84 ms	864.7 ms
xUnit	2.9.3	893.7 ms	14.42 ms	12.78 ms	892.3 ms
MSTest	3.10.4	824.3 ms	16.16 ms	30.75 ms	827.2 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	1.315 s	0.0190 s	0.0177 s	1.312 s
xUnit	2.9.3	1.404 s	0.0105 s	0.0093 s	1.406 s
MSTest	3.10.4	1.263 s	0.0159 s	0.0141 s	1.265 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	1.372 s	0.0158 s	0.0140 s	1.370 s
xUnit	2.9.3	1.462 s	0.0147 s	0.0138 s	1.467 s
MSTest	3.10.4	1.319 s	0.0101 s	0.0079 s	1.321 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	282.8 ms	23.36 ms	68.88 ms	292.7 ms
TUnit	0.57.65	1,021.2 ms	74.27 ms	217.82 ms	981.7 ms
NUnit	4.4.0	1,135.5 ms	30.24 ms	87.26 ms	1,129.8 ms
xUnit	2.9.3	1,214.0 ms	37.97 ms	104.58 ms	1,221.6 ms
MSTest	3.10.4	963.0 ms	33.33 ms	90.67 ms	951.2 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	25.84 ms	0.298 ms	0.279 ms	25.77 ms
TUnit	0.57.65	946.61 ms	18.764 ms	21.609 ms	945.39 ms
NUnit	4.4.0	1,303.23 ms	6.576 ms	5.830 ms	1,304.83 ms
xUnit	2.9.3	1,373.62 ms	12.321 ms	10.922 ms	1,373.85 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	53.88 ms	1.075 ms	1.397 ms	53.76 ms
TUnit	0.57.65	1,016.64 ms	19.695 ms	22.681 ms	1,015.71 ms
NUnit	4.4.0	1,353.95 ms	9.623 ms	8.530 ms	1,355.93 ms
xUnit	2.9.3	1,424.95 ms	27.795 ms	29.740 ms	1,416.50 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	156.1 ms	8.28 ms	24.28 ms	149.5 ms
TUnit	0.57.65	1,003.4 ms	75.85 ms	216.40 ms	967.4 ms
NUnit	4.4.0	1,538.4 ms	142.24 ms	417.17 ms	1,423.0 ms
xUnit	2.9.3	1,243.9 ms	58.92 ms	170.94 ms	1,242.2 ms
MSTest	3.10.4	1,273.8 ms	110.74 ms	317.74 ms	1,223.6 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	26.30 ms	0.168 ms	0.149 ms	26.29 ms
TUnit	0.57.65	945.49 ms	18.799 ms	22.379 ms	943.12 ms
NUnit	4.4.0	1,321.94 ms	10.563 ms	9.881 ms	1,322.25 ms
xUnit	2.9.3	1,394.78 ms	9.010 ms	8.428 ms	1,394.10 ms
MSTest	3.10.4	1,271.70 ms	9.700 ms	9.073 ms	1,270.76 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	61.76 ms	1.043 ms	0.976 ms	62.36 ms
TUnit	0.57.65	1,050.87 ms	20.881 ms	24.047 ms	1,049.79 ms
NUnit	4.4.0	1,429.72 ms	13.654 ms	12.104 ms	1,433.31 ms
xUnit	2.9.3	1,446.62 ms	17.306 ms	16.188 ms	1,443.57 ms
MSTest	3.10.4	1,318.66 ms	12.503 ms	11.695 ms	1,319.96 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	187.8 ms	10.71 ms	30.54 ms	190.1 ms
TUnit	0.57.65	1,113.5 ms	85.26 ms	248.70 ms	1,061.1 ms
NUnit	4.4.0	1,530.1 ms	107.54 ms	317.09 ms	1,503.3 ms
xUnit	2.9.3	1,314.0 ms	67.51 ms	199.05 ms	1,302.3 ms
MSTest	3.10.4	1,112.3 ms	81.43 ms	237.55 ms	1,083.6 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	26.88 ms	0.154 ms	0.129 ms	26.86 ms
TUnit	0.57.65	964.14 ms	18.784 ms	18.448 ms	969.71 ms
NUnit	4.4.0	1,329.60 ms	9.400 ms	8.793 ms	1,333.00 ms
xUnit	2.9.3	1,395.85 ms	8.020 ms	7.502 ms	1,396.99 ms
MSTest	3.10.4	1,276.36 ms	8.271 ms	7.736 ms	1,276.65 ms

windows-latest

BenchmarkDotNet v0.15.2, Windows 10 (10.0.20348.4171) (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	57.01 ms	1.137 ms	3.317 ms	57.65 ms
TUnit	0.57.65	1,004.72 ms	18.438 ms	31.805 ms	1,005.44 ms
NUnit	4.4.0	1,335.75 ms	16.565 ms	15.495 ms	1,333.72 ms
xUnit	2.9.3	1,382.34 ms	14.540 ms	13.600 ms	1,385.97 ms
MSTest	3.10.4	1,277.11 ms	7.443 ms	6.962 ms	1,278.63 ms