Mockito verify that a specific lambda has been passed as an argument in mock's method

Question

I want to test the following method:

    public void dispatchMessage(MessageHandler handler, String argument1, String argument2, Long argument3) {

    handl         


        

Answer 1

Outside of the specific lambda, you can verify that your method was called with any lambda expression was called like this:

    verify(handler).registerMessage(any())

    private fun  any(): T {
        Mockito.any()
        return null as T
    }