Examination hints

Figure 571. Personal examination cheat sheets Slide presentation
  • Username based Zip archive of 10 MB max e.g. xy123.zip.

    Caution

    Use standard formats e.g. png, gif, pdf. Proprietary stuff like .doc, .docx, .rtf possibly lack tool support by exam environment.

  • Link for cheat sheet uploads.

  • Freeze during exam periods.

  • Cheat sheets available at https://freedocs.mi.hdm-stuttgart.de/cheat/ until end of exam period.

  • Check your archive's content in the exam environment!


Figure 572. Unit tests in examinations Slide presentation
  • Task definitions by Javadoc.

  • Corresponding Unit tests.

  • Automated evaluation scoring your achievements.

  • Individual weights reflecting a test's significance.


Figure 573. Example interface definition Slide presentation
/**
* Finde das n-te ungerade Element einer Wertefolge.
* 
* <p>Beispiel: Im Array {3, 2, 0, 1, 4} ist der Wert «1» an der Index-
*   position «3» das zweite ungerade Element.</p>
* 
* @param werte Die zu durchsuchenden Werte.
* @param n Die gewünschte Position, Start bei 1.
* 
* @return Den Index des n-ten ungeraden Wertes falls es mindestens n
* ungerade Werte gibt, ...
*/
static public int getNtesUngeradesElement(final int[] werte, final int n){     
    return 12345; // TODO: Implementiere mich korrekt!
}

Figure 574. Corresponding test Slide presentation
@Test
@Marking(points=1) /* 1 point if test passes */
public void test_400() {
  Assert.assertEquals(
    2, /* Expected result */
    Helper.getNtesUngeradesElement(new int[]{-4,  6,  1, -2,   8}, 1));
}

Figure 575. Don't cheat! Slide presentation
Unit Tests Your solution
assertFalse(isPrime(1));
assertTrue (isPrime(2));
assertTrue (isPrime(3));
assertFalse(isPrime(4));
assertTrue (isPrime(5));
assertFalse(isPrime(6));
assertTrue (isPrime(7));
assertFalse(isPrime(8));
assertFalse(isPrime(9));
assertFalse(isPrime(10));
... boolean isPrime(final int p) {
  switch (p) {
    case 2:
    case 3:
    case 5:
    case 7:
      return true;
    default:
      return false;    }

Will be treated as an attempt at deception / Täuschungsversuch.


Figure 576. Unit tests strategy in examinations Slide presentation
  • Unit testing is relentless: You are no longer at high school where a result having just a wrong sign used to matter next to nothing.

  • Focus on completing units of work rather than nearly finishing a large number of tasks.

  • Watching a test fail just happens. Learn to systematically fix bugs:

    1. Use your IDE's debugger. Practise debugging Junit tests individually addressing failures one by one.

    2. Insert log statements using log4j.