Using Spring mockMvc to test optional path variables

Question

I have a method in Spring MVC with optional path variable. I am trying to test it for a scenario when optional path variable is not provided.

Snippet from Controller,

Answer 1

This is late but I faced recently this situation and thought this post would help others.

In case of mocking endpoints with optional request param or path variable, you can specify it like this.

Say I have a method with params as m1(String param1, String param2) called from controller.

Where param 2 is an optional param for controller, so at runtime null would be passed if it is not passed.

How to mock:

Mockito.when(m1(Mockito.anyString(), Mockito.eq(null)).the return()

Use Mockito.eq(null) in your test to pass it as null for optional param.