public void GivenSoldier_WhenSoldierGetsEnlisted_SoldierGetsId()
{
Soldier soldier = new Soldier("Soldier");
Army army = new Army(_iHeadQuarters);
_iHeadQuarters.ReportEnlistment("Soldier").Returns(99);
army.Enroll(soldier);
soldier.Id.Should().Be(99);
}
public void Enroll(Soldier soldier)
{
if (soldier == null)
{
throw new ArgumentNullException();
}
soldier.Id = _headQuarters.ReportEnlistment(soldier.Name);
Soldiers.Add(soldier);
}
