public void AddEmployeeTest()
{
// Arrange.
IEmployeeFactory empFactory = new EmployeeFactory();
IDBContext dbContext = new DBContext();
EmployeeModel employee = new EmployeeModel()
{
EmployeeId = 200, EmployeeName = "B", Department = "IT"
};
// Act.
dbContext.AddEmployee(empFactory.GetEmployeeFromModel(employee));
// Assert.
List <Employee> employees = dbContext.GetEmployees().ToList();
Assert.IsNotNull(employees);
Assert.AreEqual(101, employees.Count);
}