test-workflow

name	test-workflow
description	Writes tests covering all encina test types: unit, guard, contract, property, integration. Enforces per-flag obligations model, AAA pattern, real code execution, Docker fixtures, and multi-provider coverage. Triggers on test creation or when asked to write tests.

Test Workflow Skill

Guides the complete test-writing workflow for Encina. Ensures tests follow the project's rigorous standards.

Test Types (Select Appropriate)

Type	When Required	Location	Key Rules
Unit	✅ All code	{Package}.Tests/	Fast (<1ms), mocks deps, isolated
Guard	✅ Public methods	{Package}.GuardTests/	Null checks → ArgumentNullException
Contract	✅ Public APIs	{Package}.ContractTests/	Interfaces, abstract classes
Property	🟡 Complex logic	{Package}.PropertyTests/	FsCheck, invariants
Integration	🟡 DB ops	`{Package}.IntegrationTests/	Docker/Testcontainers, [Collection]
Load	📄 Concurrency	Encina.LoadTests/	Justify if skip
Benchmarks	📄 Hot paths	Encina.BenchmarkTests/	BenchmarkDotNet, --list flat

Per-Flag Obligations (CRITICAL)

Each test type is an independent flag. Coverage measured per-flag:

Flag	Project	Target
Unit	Encina.UnitTests	≥85% line
Guard	Encina.GuardTests	≥85% line
Contract	Encina.ContractTests	≥85% line
Property	Encina.PropertyTests	≥80% branch
Integration	Encina.IntegrationTests	≥85% line

Code execution MUST be real (not reflection):

Approach	Coverage
new Detector().Detect(x)	✅ Covers lines
validator.Validate(x, opts)	✅ Covers lines
typeof(IValidator).GetMethod(...)	❌ ZERO lines
typeof(T).IsInterface	❌ ZERO lines

Integration Test Fixtures

// ✅ CORRECT - inject fixture via constructor
[Collection("ADO-PostgreSQL")]
public class MyTests : IAsyncLifetime
{
    private readonly PostgreSqlFixture _fixture;
    public MyTests(PostgreSqlFixture fixture) => _fixture = fixture;
    public async Task InitializeAsync() => await _fixture.ClearAllDataAsync();
}

// ❌ WRONG - per-class fixture
// ❌ WRONG - calling _fixture.DisposeAsync()
// ❌ WRONG - using new PostgreSqlFixture()

Available Collections

ADO-SqlServer, ADO-PostgreSQL, ADO-MySQL, Dapper-SqlServer, Dapper-PostgreSQL, Dapper-MySQL, EFCore-SqlServer, EFCore-PostgreSQL, EFCore-MySQL.

Test Writing Workflow

Step 1: Write Unit Tests

• Arrange (setup) → Act (call) → Assert (verify)
• ONE thing per test
• Descriptive names: AddAsync_ValidMessage_ShouldSucceed
• Mock dependencies, no shared state

Step 2: Add Guard Tests

• Null params → ArgumentNullException
• Empty/invalid params → ArgumentException
• Use GuardClauses.xUnit

Step 3: Add Contract Tests

• All providers return same shapes
• Use real implementations (not reflection)

Step 4: Add Property Tests (if complex)

• FsCheck for invariants
• Boundary values, edge cases

Step 5: Add Integration Tests (if DB)

• Docker/Testcontainers
• Shared [Collection] fixtures

Step 6: Verify

• dotnet test locally
• Check manifest for required types
• CI won't trigger prematurely

Test Data Builders

Use builders for test data:

var message = new OutboxMessageBuilder()
    .WithPayload("{\"test\":true}")
    .Build();

Before Commit

• All required test types present (check manifest)
• Per-flag coverage targets met
• Multi-provider coverage (10 DB providers)
• Tests use real code (not reflection-only)
• Integration tests use [Collection] fixtures
• No flaky tests
• dotnet test passes