Unit testing http

[cliffeby]

When I replace the search method with a simple getAll method e.g.
getUsers(term:string) { let apiURL = ${this.apiRoot}?term=${term}&media=music&limit=20; return this.http.get<[]>(this.apiURL);

and call
getUsers('U2')

the test fails with no matching url.

Other similar code on the web will pass, but then the test expect(service.results.length).toBe(1+X);
will not fail.

Any ideas appreciated.