# Automated Test‑Suite Overview

This document enumerates **every automated check** executed by the Stella Ops
CI pipeline, from unit level to chaos experiments.  It is intended for
contributors who need to extend coverage or diagnose failures.

> **Build parameters** – values such as `{{ dotnet }}` (runtime) and
> `{{ angular }}` (UI framework) are injected at build time.

---

## Layer map

| Layer | Tooling | Entry‑point | Frequency |
|-------|---------|-------------|-----------|
| **1. Unit** | `xUnit` (<code>dotnet test</code>) | `*.Tests.csproj` | per PR / push |
| **2. Property‑based** | `FsCheck` | `SbomPropertyTests` | per PR |
| **3. Integration (API)** | `Testcontainers` suite | `test/Api.Integration` | per PR + nightly |
| **4. Integration (DB‑merge)** | in‑memory Mongo + Redis | `FeedMerge.Integration` | per PR |
| **5. Contract (gRPC)** | `Buf breaking` | `buf.yaml` files | per PR |
| **6. Front‑end unit** | `Jest` | `ui/src/**/*.spec.ts` | per PR |
| **7. Front‑end E2E** | `Playwright` | `ui/e2e/**` | nightly |
| **8. Lighthouse perf / a11y** | `lighthouse-ci` (Chrome headless) | `ui/dist/index.html` | nightly |
| **9. Load** | `k6` scripted scenarios | `k6/*.js` | nightly |
| **10. Chaos CPU / OOM** | `pumba` | Docker Compose overlay | weekly |
| **11. Dependency scanning** | `Trivy fs` + `dotnet list package --vuln` | root | per PR |
| **12. License compliance** | `LicenceFinder` | root | per PR |
| **13. SBOM reproducibility** | `in‑toto attestation` diff | GitLab job | release tags |

---

## Quality gates

| Metric | Budget | Gate |
|--------|--------|------|
| API unit coverage | ≥ 85 % lines | PR merge |
| API response P95 | ≤ 120 ms | nightly alert |
| Δ‑SBOM warm scan P95 (4 vCPU) | ≤ 5 s | nightly alert |
| Lighthouse performance score | ≥ 90 | nightly alert |
| Lighthouse accessibility score | ≥ 95 | nightly alert |
| k6 sustained RPS drop | &lt; 5 % vs baseline | nightly alert |

---

## Local runner

```bash
# minimal run: unit + property + frontend tests
./scripts/dev-test.sh

# full stack incl. Playwright and lighthouse
./scripts/dev-test.sh --full
````

The script spins up MongoDB/Redis via Testcontainers and requires:

* Docker ≥ 25
* Node 20 (for Jest/Playwright)

---

## CI job layout

```mermaid
flowchart LR
  subgraph fast-path
    U[xUnit] --> P[FsCheck] --> I1[Testcontainer API]
  end

  I1 --> FE[Jest]
  FE --> E2E[Playwright]
  E2E --> Lighthouse
  Lighthouse --> INTEG2[FeedMerge]
  INTEG2 --> LOAD[k6]
  LOAD --> CHAOS[pumba]
  CHAOS --> RELEASE[Attestation diff]
```

---

## Adding a new test layer

1. Extend `scripts/dev-test.sh` so local contributors get the layer by default.
2. Add a dedicated GitLab job in `.gitlab-ci.yml` (stage `test` or `nightly`).
3. Register the job in `docs/19_TEST_SUITE_OVERVIEW.md` *and* list its metric
   in `docs/metrics/README.md`.

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