# Classification catalogs

**Fixture:** `fixture-classification-catalogs@1`

## Given

The generated specification projection contains classification catalogs.

## When

The fixture inspects source basenames, source suffixes, and default document roots.

## Required invariants

- **`INV-CLASSIFICATION-BASENAMES`:** Every canonical source basename is generated.
- **`INV-CLASSIFICATION-SUFFIXES`:** Every canonical source suffix is generated.
- **`INV-CLASSIFICATION-DOCUMENT-ROOTS`:** Every canonical default document root is generated.

## Forbidden effects

- **`NO-CLASSIFICATION-DUPLICATES`:** No generated classification catalog contains duplicate values.

## Instrumentation

```zig tj-test
try fixture.given_generated_classification_catalogs();
try fixture.when_inspect_classification_catalogs();
try fixture.then_inv_classification_basenames();
try fixture.then_inv_classification_suffixes();
try fixture.then_inv_classification_document_roots();
try fixture.forbid_no_classification_duplicates();
```

## Variations

Invalid values, duplicate values, and stale requirement references are covered by product-registry unit validation.

## Limitations

This fixture verifies generated catalog data. It does not prove scanner classification behavior or filesystem traversal.