Small refactoring in Lesson 6

app/src/main/java/com/example/paktalin/agilejava/Session.java

@@ -34,16 +34,16 @@ public abstract class Session implements Comparable<Session>{
         return this.getNumber().compareTo(that.getNumber());
     }
 
-    protected void setNumberOfCredits(int numberOfCredits) {
+    void setNumberOfCredits(int numberOfCredits) {
         this.numberOfCredits = numberOfCredits;
     }
 
-    public void enroll(Student student) {
+    void enroll(Student student) {
         students.add(student);
         student.addCredits(numberOfCredits);
     }
 
-    public Date getEndDate() {
+    Date getEndDate() {
         GregorianCalendar calendar = new GregorianCalendar();
         calendar.setTime(getStartDate());
         calendar.add(Calendar.DAY_OF_YEAR, getNumberOfDaysInSession());
@@ -56,7 +56,7 @@ public abstract class Session implements Comparable<Session>{
         return getSessionLength() * daysInWeek - daysFromFridayToMonday;
     }
 
-    public List<Student> getAllStudents() {
+    List<Student> getAllStudents() {
         return students;
     }
 
@@ -68,10 +68,10 @@ public abstract class Session implements Comparable<Session>{
     int getNumberOfStudents() {
         return students.size();
     }
-    public String getDepartment() {
+    String getDepartment() {
         return department;
     }
-    public String getNumber() {
+    String getNumber() {
         return number;
     }
     Student get(int index) {

app/src/test/java/com/example/paktalin/agilejava/CourseSessionTest.java

@@ -22,7 +22,7 @@ public class CourseSessionTest extends SessionTest {
     }
 
     @Override
-    protected Date calculateEndDate() {
+    protected Date getExpectedEndDate() {
         return DateUtil.createDate(2003, 4, 25);
     }
 }

app/src/test/java/com/example/paktalin/agilejava/SessionTest.java

@@ -22,6 +22,7 @@ abstract public class SessionTest extends TestCase {
     }
 
     protected abstract Session createSession(String department, String number, Date startDate);
+    protected abstract Date getExpectedEndDate();
 
     public void testCreate() {
         assertEquals("ENGL", session.getDepartment());
@@ -62,8 +63,6 @@ abstract public class SessionTest extends TestCase {
     public void testCourseDates() {
         Date startDate = DateUtil.createDate(2003, 1, 6);
         Session session = createSession("ENGL", "200", startDate);
-        assertEquals(calculateEndDate(), session.getEndDate());
+        assertEquals(getExpectedEndDate(), session.getEndDate());
     }
-
-    protected abstract Date calculateEndDate();
 }

app/src/test/java/com/example/paktalin/agilejava/SummerCourseSessionTest.java

@@ -24,7 +24,7 @@ public class SummerCourseSessionTest extends SessionTest {
     }
 
     @Override
-    protected Date calculateEndDate() {
+    protected Date getExpectedEndDate() {
         return DateUtil.createDate(2003, 2, 28);
     }