Using automated tests.

Figure 201. Response to coding errors Slide presentation Create comment in forum
Response to coding errors

Figure 202. Unit test concept Slide presentation Create comment in forum

Figure 203. alarmClock(...) with errors Slide presentation Create comment in forum
public class AlarmClock {
  /** Given a day of the week encoded as 0=Sun, 1=Mon,...
   */
  static  public String alarmClock(int day, boolean vacation) {
    switch (day) {
      case 1:
         ...
    if (vacation) {
      return "off";
    } else {
      return "10:00"; ...

The static keyword is required here as being explained in the section called “Class members and methods”.


Figure 204. Testing alarmClock(...) Slide presentation Create comment in forum
public class AlarmClockTest {
  @Test 
  public void test_1_false() {
         Assert.assertEquals( "7:00", AlarmClock.alarmClock(1, false));
  }                                                            
  ...                                                          
                          Expected result               Input parameter
  @Test                                                        
  public void test_0_false() {                                 
         Assert.assertEquals("10:00", AlarmClock.alarmClock(0, false));
  }  ...

Figure 205. Testing alarmClock(...) details Slide presentation Create comment in forum
public class AlarmClockTest {                    Input parameter
  @Test                                                  
  public void test_1_false() {                           
         final String result = AlarmClock.alarmClock(1, false);
                        ┗━━━━━━━━━━━━━━━┓
                                        
         Assert.assertEquals( "7:00", result);
  }                             
  ...                           
                    Expected result