What testing frameworks does this skill support?

This skill is optimized for xUnit as the primary test runner, NSubstitute for mocking and stubbing, and FluentAssertions for writing human-readable assertions.

Can this skill help with parameterized testing?

Yes, it includes specific guidance for using xUnit [Theory] with [InlineData] for simple parameters and [MemberData] for more complex test scenarios.

Why is FluentAssertions preferred in this skill?

FluentAssertions is used because it allows for more expressive, chained assertions and better failure messages compared to standard xUnit Assert methods.

How does this skill handle integration testing?

It provides patterns for using WebApplicationFactory to host ASP.NET Core applications in-memory and Testcontainers to spin up real SQL Server or other database instances for isolated testing.

Does it enforce a specific test structure?

Yes, it strictly enforces the Arrange-Act-Assert (AAA) pattern to ensure that setup, execution, and verification are clearly separated and readable.

.NET Testing Patterns

Name: .NET Testing Patterns
Author: jsamuelsen11

byjsamuelsen11

0•

Security & Testing

Implements standardized .NET testing practices using xUnit, NSubstitute, and FluentAssertions to ensure high-quality, maintainable test suites.

This skill equips Claude with a comprehensive set of .NET testing standards designed to improve code reliability and developer productivity. It enforces the Arrange-Act-Assert (AAA) pattern, provides consistent naming conventions (MethodName_Condition_Expected), and offers deep integration patterns for modern libraries like NSubstitute for mocking and FluentAssertions for expressive validation. Beyond unit testing, it includes advanced configurations for ASP.NET Core integration tests using WebApplicationFactory and isolated environment management with Testcontainers, making it an essential tool for building robust .NET applications.

Key Features

01Integration testing patterns with WebApplicationFactory and Testcontainers

020 GitHub stars

03Standardized xUnit naming conventions for improved test discoverability

04Enforcement of Arrange-Act-Assert (AAA) structural separation

05Advanced NSubstitute mocking, stubbing, and interaction verification

06FluentAssertions implementation for readable and chained validation

Use Cases

01Creating reliable integration tests for ASP.NET Core APIs with real database containers

02Refactoring existing .NET tests to follow modern industry best practices

03Setting up comprehensive unit tests for complex business logic services

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jsamuelsen11/claude-config testing-patterns

For use in Claude.ai and ChatGPT

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