public void testVariableMethodParms() {
    Performance performance = new Performance();
    performance.setScores(75, 72, 90, 60);
    assertEquals(74.25, performance.average(), tolerance);

    performance.setScores(100, 90);
    assertEquals(95.0, performance.average(), tolerance);
  }
  public void testAverage() {
    Performance performance = new Performance();
    performance.setNumberOfTests(4);
    performance.set(0, 98);
    performance.set(1, 92);
    performance.set(2, 81);
    performance.set(3, 72);

    assertEquals(92, performance.get(1));

    assertEquals(85.75, performance.average(), tolerance);
  }
 public void testArrayParm() {
   Performance performance = new Performance();
   performance.setScores(new int[] {75, 72, 90, 60});
   assertEquals(74.25, performance.average(), tolerance);
 }
 public void testInitialization() {
   Performance performance = new Performance();
   performance.setScores(75, 72, 90, 60);
   assertEquals(74.25, performance.average(), tolerance);
 }