Question

I am trying to update my test since I made a change on my service class.
In a service method I added (“withNewSession”)

Domain.withNewSession {
  .. ...
  domain.save()
}

Since I am using the “withNewSession”, I am getting method missing exception as this Domain is mocked in my test class.

Answer 1

withNewSession method is not allowed by unit testing. Use inside your test class:

@org.junit.Before
void before() {
    DomainClazz.metaClass.static.withNewSession = {Closure c -> c.call() }
}