add unit test coverage for ShareAccessService

[aglinxinyuan]

Task Summary

Add share-access.service.spec.ts covering ShareAccessService, the REST client for grant / revoke / owner / list of resource share-access. Use Angular's HttpTestingController to assert exact URL composition per method.

Background

frontend/src/app/dashboard/service/user/share-access/share-access.service.ts composes four endpoints under ${AppSettings.getApiEndpoint()}/access. The URL assembly (path segments interpolated from args) is the contract worth pinning.

grantAccess(type, id, email, privilege) { return this.http.put(`${BASE}/${type}/grant/${id}/${email}/${privilege}`, null); }
revokeAccess(type, id, username)        { return this.http.delete(`${BASE}/${type}/revoke/${id}/${username}`); }
getOwner(type, id)                      { return this.http.get(`${BASE}/${type}/owner/${id}`, { responseType: "text" }); }
getAccessList(type, id)                 { return this.http.get(`${BASE}/${type}/list/${id}`); }

Behavior to pin

Method	Contract (assert with HttpTestingController)
grantAccess	PUT .../access/{type}/grant/{id}/{email}/{privilege}
revokeAccess	DELETE .../access/{type}/revoke/{id}/{username}
getOwner	GET .../access/{type}/owner/{id} with responseType: "text"
getAccessList	GET .../access/{type}/list/{id}; resolves to the returned array

Set up TestBed with HttpClientTestingModule (or provideHttpClientTesting); flush() each expected request and httpMock.verify() in afterEach. Any existing *.service.spec.ts under frontend/src/app using HttpTestingController is a good template.

Scope

• New spec: frontend/src/app/dashboard/service/user/share-access/share-access.service.spec.ts.
• No production-code changes.

Task Type

• Refactor / Cleanup
• DevOps / Deployment / CI
• Testing / QA
• Documentation
• Performance
• Other

[Neilk1021]

/take