1. Define initComponent function that returns named harness (allows to use shorthand destructuring) and router (if needed); Keep in mind that INJET could only be called after configureTestingModule so injections should be done either in initComponent or after its call in a test;
2. Initialize service spy objects in Jasmine beforeEach to make sure Jasmine handles thier lifecycle;
3. In test: override/define spies, THEN call initComponent to finish GIVEN stage of the test;

initComponent allows more flexibility for component unit testing (different returned datasets, FTs, etc.)