public void checkDelManager()
{
managers form = new managers();
//add 3 records
managers.dataManagers.Rows.Add("1", "Petya", "8888", "Менеджер", "petya", "22 мая");
managers.dataManagers.Rows.Add("2", "Vasya", "6666", "Менеджер", "vas", "22 мая");
managers.dataManagers.Rows.Add("3", "Egor", "3333", "Менеджер", "egor", "22 мая");
ManagerTypeCol coll = new ManagerTypeCol();
ManagerFactory fact = new ManagerFactory();
int a = ManagerFactory.count();
ManagerFactory.DeleteManager(1);
Assert.AreEqual(a - 1, ManagerFactory.count());
}