AssertJ Verify List of Objects with a List field is not empty

Question

Example:

public class Office {
  List<Employee> employee;
}

How do I assert that in my List<Office> offices there are none with no employees? Is it possible to assert this with one assertion chain?

Answer 1

If I understand your question correctly you want to check that all offices have employee, if so allSatisfy can be used like:

assertThat(offices).allSatisfy(office -> {
                              assertThat(office.employee).isNotEmpty();
                            });

There is also a noneSatisfy assertion available BTW.