Unit Testing

Create Test Project

This skill writes unit tests for C# code. Beforehand, if the target .NET project doesn't have a corresponding xUnit test project yet, it first creates one and sets it up with standard packages.

When to Use

• User asks to "write tests" for code in a project with no corresponding test project
• User asks to "add tests" and {ProjectName}.UnitTests (or similar name) doesn't exist
• User asks to "create a test project"
• If a similarly-named project is found, verify that the user still wants to create a new test project first.

Process

1. Identify the project that needs tests (e.g., MyApp.Api)
2. Check if {ProjectName}.UnitTests exists (e.g., MyApp.Api.UnitTests)
3. If not, run create-test-project.ps1 to scaffold the test project, placing it under the same solution as the target project and at the same level
4. Write tests following the conventions in testing-strategy.md

Files

• create-test-project.ps1 — Creates and configures the test project
• testing-strategy.md — Testing conventions and naming

What the Script Does

1. Creates new xUnit project named {ProjectName}.UnitTests
2. Adds it to the solution
3. Installs packages: AwesomeAssertions, NSubstitute, AutoFixture
4. Adds project reference to the source project
5. Runs a clean build to verify setup

After Creation

Once the project exists, write tests following testing-strategy.md conventions.