// Tester om der kan oprettes en ny ansat
public void TestAddEmployee()
{
//Arrange
Employee _testEmployee3 = new Employee("donesntExist", 1313131313, "heyhvaså", "Olaf");
_testEmployee3.IsAdmin = true;
// Act & Assert
Singleton.Instance.EP.CreateEmployee(_testEmployee3);
Assert.IsTrue(_testEmployeeViewModel.EmployeeExists(_testEmployee3.Cpr));
}