{
  "instruction": "Create API tests with WebApplicationFactory and xUnit",
  "relevant_when": "Agent builds an ASP.NET Core API",
  "context": "ASP.NET Core integration tests use WebApplicationFactory<Program> with IClassFixture for in-process hosting, ConfigureTestServices for service replacement, and in-memory database for isolation.",
  "sources": [
    {
      "type": "file",
      "filename": "skills/aspnet-testing/SKILL.md",
      "tile": "tessl-labs/aspnet-testing@0.2.0"
    }
  ],
  "checklist": [
    {
      "name": "test-project-exists",
      "rule": "Agent creates a test project or test class that uses WebApplicationFactory<Program>",
      "relevant_when": "Agent builds an ASP.NET Core API"
    },
    {
      "name": "iclassfixture-usage",
      "rule": "Agent uses IClassFixture<WebApplicationFactory<Program>> or IClassFixture<CustomWebApplicationFactory> on the test class",
      "relevant_when": "Agent creates ASP.NET Core integration tests"
    },
    {
      "name": "in-memory-db-for-tests",
      "rule": "Agent configures UseInMemoryDatabase or UseSqlite with :memory: for test database isolation, with a unique database name per test class",
      "relevant_when": "Agent sets up ASP.NET Core test configuration with Entity Framework"
    },
    {
      "name": "configure-test-services",
      "rule": "Agent uses ConfigureTestServices (preferred) or ConfigureServices via WithWebHostBuilder to replace services for testing",
      "relevant_when": "Agent configures WebApplicationFactory service overrides"
    },
    {
      "name": "xunit-fact-attributes",
      "rule": "Agent uses xUnit with [Fact] attributes on test methods. Test methods must be async Task.",
      "relevant_when": "Agent writes ASP.NET Core test methods"
    },
    {
      "name": "dotnet-test-command",
      "rule": "Agent mentions or uses 'dotnet test' as the command to run the tests",
      "relevant_when": "Agent provides instructions for running ASP.NET Core tests"
    }
  ]
}