skills.rest
iliasjennane
iliasjennaneCOMMUNITY
Explore all skills by this author →
GitHub

csharp-xunit

Write XUnit tests for .NET applications using the AAA pattern and Moq.

Updated Apr 22, 2026
Search Tags:#mocks#dotnet#unit-testing#xunit#testing-best-practices#data-driven-tests
One-click install
npx skills add https://github.com/iliasjennane/LearningAgent --skill csharp-xunit-iliasjennane
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: csharp-xunit
Source: https://github.com/iliasjennane/LearningAgent/tree/main/.agents/skills/csharp-dotnet-development/csharp-xunit
Command: npx skills add https://github.com/iliasjennane/LearningAgent --skill csharp-xunit-iliasjennane

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

XUnit Best Practices helps developers write robust unit tests for .NET projects using XUnit, including data-driven testing approaches and clear guidance on project structure and conventions.

Core Features & Use Cases

  • Data-driven testing with [Theory], [InlineData], [MemberData], and [ClassData]
  • Test structure and organization guidance using AAA pattern, fixtures, and clear naming
  • Setup recommendations for .NET test projects, mocking, and running tests with dotnet test
  • Real-world use cases such as validating business logic across multiple input scenarios

Quick Start

Create a test project named [ProjectName].Tests and implement a data-driven XUnit test using [Theory] with InlineData to cover multiple scenarios.

Frequently Asked Questions about csharp-xunit

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write data-driven tests in xUnit for .NET?▼

Data-driven tests in xUnit use the [Theory] attribute combined with [InlineData], [MemberData], or [ClassData] to execute a single test method across multiple input scenarios. This approach validates business logic rigorously without duplicating test code.

What is the recommended project structure for xUnit testing in .NET?▼

The recommended xUnit testing structure uses a separate test project named [ProjectName].Tests. This convention isolates unit tests from production code while enforcing the AAA pattern and clear test organization using fixtures.

Does xUnit work with Moq for mocking dependencies in .NET unit tests?▼

Yes, xUnit works with Moq to mock dependencies in .NET unit tests. Prescribing Moq for mocks allows you to isolate classes under test by simulating external behavior, ensuring robust and focused test validation.

When should I use [Fact] versus [Theory] in xUnit?▼

Use [Fact] in xUnit for single-scenario unit tests with fixed inputs and expected outputs. Use [Theory] when you need data-driven testing to pass multiple data sets through the same test logic using [InlineData] or [MemberData].

How do I run xUnit tests from the command line in .NET?▼

Run xUnit tests from the .NET command line using the dotnet test command. This executes all tests within your [ProjectName].Tests project, providing pass or fail results for your unit testing suite.

What is the AAA pattern in unit testing and how does xUnit enforce it?▼

The AAA pattern in unit testing structures tests into Arrange, Act, and Assert phases. While xUnit does not strictly enforce it, following this pattern ensures clear test structure and readable validation for .NET libraries and apps.

Related Skills

Explore More Software Engineering Skills→
manxmanx

unit-test-specialist

Automate unit testing for .NET 9 projects with xUnit and Moq.

Community
Basic
icartshicartsh
4

dotnet-test

Execute .NET unit tests with optional Coverlet coverage and BenchmarkDotNet benchmarks.

Community
Advanced
dimsourdimsour
2

dotnet:testing

Automate .NET application testing with xUnit, NUnit, and MSTest.

Community
Advanced
ojrojasojrojas

dotnet-test-frameworks

Identifies.NET test frameworks and compares their assertion APIs, skipping patterns, and setup/teardown methods.

Community
Intermediate