How can I inject Document in service?

I have an Angular 2 application. For mocking the Document object in tests, I'd like to inject it to the service like:

import { Document } from '??'

@Injectable()
export class MyService {
constructor(document: Document) {}
}


The Title service of Angular uses the internal getDOM() method.

Is there any simple way to inject the Document to the service? Also, how should I reference it in the providers array?

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