Angular2 unit testing : testing a component's constructor

Question

All is in the title : how can one test what is done in the component\'s constructor ?

For your information, I am using a service that requires a setting

Answer 1

Since OP states "I would like to see if the 2 methods that I call in the constructor are called correctly." I have a better approach.

Write a unit test. You don't need to use the test bed for this. It will slow down your tests a lot. Instantiate your mocks manually. Set your spies on the methods you're interested in and then call the component constructor manually with the stubs you've instantiated and set spies on. Then test if spied methods have been called correctly.

The key is to extend your stubs from the original service classes. jasmine.createSpyObj helps for mocking angular classes like Router.