public void RemoveRangeMustRemoveEntitiesWhenCalled()
{
Person person = new Person {
FirstName = "Bob", LastName = "Smith"
};
MockDbSet <Person> persons = new MockDbSet <Person>(new[] { person });
Assert.Contains(persons, x => x.Id == person.Id);
persons.RemoveRange(person);
Assert.DoesNotContain(persons, x => x.Id == person.Id);
}
