@Test public void shouldGetAll() throws Exception { when(repository.getAll()).thenReturn(asList(new Manufacturer())); service.getAll(); verify(repository).getAll(); }
public List<Manufacturer> getAll() { return repository.getAll(); }
ManufacturerService { public List<Manufacturer> getAll() { return repository.getAll(); } }
ManufacturerService { public List<Manufacturer> getAll() { return repository.getAll(); }  }
ManufacturerService { public List<Manufacturer> getAll() { return repository.getAll(); }  List<Manufacturer> getAll(); }
ManufacturerService { public List<Manufacturer> getAll() { return repository.getAll(); }  List<Manufacturer> getAll();  }