def test_student_getters_setters():
student = Student("first", "last", datetime.datetime(2020, 1, 1), 1234)
student.set_first_name("John")
assert student.get_first_name() == "John"
student.set_last_name("Smith")
assert student.get_last_name() == "Smith"
student.set_student_number(4321)
assert student.get_student_number() == 4321
def test_set_student_number_raises_error_with_invalid_value():
student = Student("first", "last", datetime.datetime(2020, 1, 1), 1234)
with pytest.raises(TypeError):
student.set_student_number("abc123")