public void RandomFamilyHasSameLastName()
        {
            var family = new Family();
            family.RandomFamily();

            string familyName = family.dad.familyName;
            Assert.Equal(familyName, family.mom.familyName);
            foreach(Person c in family.children)
            {
                Assert.Equal(familyName, c.familyName);
            }
        }