> ## Documentation Index
> Fetch the complete documentation index at: https://docs.atconseil.info/llms.txt
> Use this file to discover all available pages before exploring further.

# Coverage depth

> Beyond 'is it covered?' — a deterministic, AI-free assessment of how well each requirement is actually tested.

Plain coverage is **structural**: a requirement with at least one linked test is "covered", even if a single trivial smoke test stands in for five acceptance criteria — false confidence.

Turn on **"Assess coverage depth"** (opt-in, **off by default** — when off, the Coverage tab is strictly unchanged). After *Analyze coverage*, a **Depth** column appears with a per-requirement band:

| Band               | Meaning                                            |
| ------------------ | -------------------------------------------------- |
| **Well covered**   | The tests appear to cover the acceptance criteria. |
| **Partial**        | Criteria or paths are probably missing.            |
| **Shallow**        | Too few tests, or tests without steps.             |
| **Gap**            | No linked test.                                    |
| **Underspecified** | No (or few) acceptance criteria to assess against. |

Expand a row to see the **findings** (the reasons, with links) and concrete **improvement axes** — *"add a negative test for…"*, *"flesh out the tests without steps"*, *"confirm a test covers X"*.

## Deterministic & advisory

The analysis is **100% deterministic and AI-free** — it counts acceptance criteria, measures step depth, looks for negative / edge keywords (FR + EN), and checks term overlap and execution. It is **advisory only**: it never blocks anything, never feeds the quality score or GO/NO-GO, and never changes an outcome. The wording stays cautious (*"possible"*, *"apparent"*) — it is a *review this* signal; **you** decide.

It is **read-only** (no new API call or scope) and degrades gracefully per requirement: a test with no steps still counts, and no acceptance criteria yields *Underspecified* — never an invented verdict.

## Related

<CardGroup cols={2}>
  <Card title="Quality Gate — grade & GO/NO-GO" icon="shield-check" href="/en/quality/quality-gate">The deterministic score.</Card>
  <Card title="The Test coverage tab" icon="list-check" href="/en/work-item/test-coverage-tab">Depth on the work item.</Card>
</CardGroup>