//this test should be run with specific parameters
public static void AddAssignment()
{
String k = "";
Assignment ass = new Assignment();
ass.Lecturer_ID = 1;
ass.Student_ID = 1;
ass.Status_ID = 1;
Assert.IsTrue(AssignmentManager.AddAssigment(ass, out k));
var assignment = AssignmentManager.GetAssignmentByStudentId(1);
Assert.IsTrue(assignment.Lecturer_ID == 1);
Assert.IsTrue(assignment.Student_ID == 1);
Assert.IsTrue(assignment.Status_ID == 1);
}