How do you override a module/dependency in a unit test with Dagger 2.0?

Question

I have a simple Android activity with a single dependency. I inject the dependency into the activity\'s onCreate like this:

Dagger_HelloComponen         


        

Answer 1

With Dagger2, you can pass a specific module (the TestModule there) to a component using the generated builder api.

ApplicationComponent appComponent = Dagger_ApplicationComponent.builder()
                .helloModule(new TestModule())
                .build();

Please note that, Dagger_ApplicationComponent is a generated class with the new @Component annotation.