mengw15 opened a new issue, #6592:
URL: https://github.com/apache/texera/issues/6592
### Task Summary
`OperatorMetadataService`
(`frontend/src/app/workspace/service/operator-metadata/operator-metadata.service.ts`,
codecov ~56%) fetches the operator metadata once over HTTP and serves lookups
from it; its spec only lightly touches this. Extend the spec with
`HttpClientTestingModule`. Vitest; see `frontend/TESTING.md`.
### Behavior to add
Flush the metadata GET (`${apiEndpoint}/${OPERATOR_METADATA_ENDPOINT}`) with
a small fixture, then cover:
- `getOperatorMetadata` — returns the cached observable emitting the fetched
metadata.
- `getOperatorSchema(operatorType)` — returns the matching `OperatorSchema`
for a known type; assert the returned schema, and the behavior for an unknown
type.
- `operatorTypeExists(operatorType)` — `true` for a type present in the
fetched metadata, `false` otherwise (including before the request resolves, if
applicable).
### Task Type
- [ ] Refactor / Cleanup
- [ ] DevOps / Deployment / CI
- [x] Testing / QA
- [ ] Documentation
- [ ] Performance
- [ ] Other
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