# Tutorial 9: Testing Your Workflow

Write unit tests for workflows using `RecordingSerdicaLegacyRabbitTransport` and `TechnicalStyleWorkflowTestHelpers`.

## Test Setup Pattern

1. Create a recording transport with pre-configured responses
2. Build a test service provider via `TechnicalStyleWorkflowTestHelpers.CreateServiceProvider`
3. Resolve `WorkflowRuntimeService` from DI
4. Call `StartWorkflowAsync` with test payload
5. Assert: tasks created, transport calls made, state values correct
6. Optionally complete tasks and verify downstream behavior

## What to Test

| Scenario | Approach |
|----------|----------|
| Workflow starts correctly | Assert single open task after start |
| Service calls made in order | `transport.Invocations.Select(x => x.Command).Should().Equal(...)` |
| Rejection flow | Complete task with `"answer": "reject"`, verify cancel call |
| Approval flow | Complete with `"answer": "approve"`, verify conversion calls |
| Operations failure re-opens task | Check same task re-appears after operations return `passed: false` |
| Sub-workflow creates child tasks | Query tasks by child workflow name |
| Business reference set | `startResponse.BusinessReference.Key.Should().Be(...)` |

## C#-Only Tutorial

- [C# Test Examples](csharp/)