Page 116. Lesson 3 is not completed yet

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

@@ -15,11 +15,6 @@ class CourseSession {
     private ArrayList<Student> students = new ArrayList<>();
     private Date startDate;
 
-    CourseSession(String department, String number) {
-        this.department = department;
-        this.number = number;
-    }
-
     CourseSession(String department, String number, Date startDate) {
         this.department = department;
         this.number = number;
@@ -63,4 +58,8 @@ class CourseSession {
         final int daysFromFridayToMonday = 3;
         return sessionLength * daysInWeek - daysFromFridayToMonday;
     }
+
+    ArrayList<Student> getAllStudents() {
+        return students;
+    }
 }

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

+package com.example.paktalin.agilejava;
+
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+
+/**
+ * Created by Paktalin on 17/05/2018.
+ */
+
+class DateUtil {
+
+    Date createDate(int year, int month, int date) {
+        GregorianCalendar calendar = new GregorianCalendar();
+        calendar.clear();
+        calendar.set(Calendar.YEAR, year);
+        calendar.set(Calendar.MONTH, month - 1);
+        calendar.set(Calendar.DAY_OF_MONTH, date);
+        return calendar.getTime();
+    }
+
+}

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

+package com.example.paktalin.agilejava;
+
+/**
+ * Created by Paktalin on 17/05/2018.
+ */
+
+ class RosterReporter {
+
+    static final String NEW_LINE = System.getProperty("line.separator");
+    static String ROSTER_REPORT_HEADER = "Student" + NEW_LINE +
+            "_____" + NEW_LINE;
+    static String ROSTER_REPORT_FOOTER = NEW_LINE + "# students = ";
+    private CourseSession session;
+
+    RosterReporter(CourseSession session) {
+        this.session = session;
+    }
+
+
+
+    String getReport() {
+        StringBuilder buffer = new StringBuilder();
+
+        buffer.append(ROSTER_REPORT_HEADER);
+
+        for (Student student : session.getAllStudents()) {
+            buffer.append(student.getName());
+            buffer.append(NEW_LINE);
+        }
+
+        buffer.append(ROSTER_REPORT_FOOTER + session.getAllStudents().size() + NEW_LINE);
+
+        return buffer.toString();
+    }
+}

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

@@ -12,6 +12,8 @@ public class AllTests extends TestSuite {
         TestSuite suite = new TestSuite();
         suite.addTestSuite(StudentTest.class);
         suite.addTestSuite(CourseSessionTest.class);
+        suite.addTestSuite(RosterReporterTest.class);
+        suite.addTestSuite(DateUtilTest.class);
         return suite;
     }
 }

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

@@ -2,9 +2,7 @@ package com.example.paktalin.agilejava;
 
 import junit.framework.TestCase;
 
-import java.util.Calendar;
 import java.util.Date;
-import java.util.GregorianCalendar;
 
 /**
  * Created by Paktalin on 16/05/2018.
@@ -16,7 +14,7 @@ public class CourseSessionTest extends TestCase {
     private Date startDate;
 
     public void setUp() {
-        startDate = createDate(2003, 1, 6);
+        startDate = new DateUtil().createDate(2003, 1, 6);
         session = new CourseSession("ENGL", "101", startDate);
     }
 
@@ -40,16 +38,7 @@ public class CourseSessionTest extends TestCase {
     }
 
     public void testCourseDates() {
-        Date sixteenWeeksOut = createDate(2003, 4, 25);
+        Date sixteenWeeksOut = new DateUtil().createDate(2003, 4, 25);
         assertEquals(sixteenWeeksOut, session.getEndDate());
     }
-
-    private Date createDate(int year, int month, int date) {
-        GregorianCalendar calendar = new GregorianCalendar();
-        calendar.clear();
-        calendar.set(Calendar.YEAR, year);
-        calendar.set(Calendar.MONTH, month - 1);
-        calendar.set(Calendar.DAY_OF_MONTH, date);
-        return calendar.getTime();
-    }
 }

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

+package com.example.paktalin.agilejava;
+
+import junit.framework.TestCase;
+
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+
+/**
+ * Created by Paktalin on 17/05/2018.
+ */
+
+public class DateUtilTest extends TestCase {
+
+    public void testCreateDate() {
+       Date date = new DateUtil().createDate(2000, 1, 1);
+       Calendar calendar = new GregorianCalendar();
+       calendar.setTime(date);
+       assertEquals(2000, calendar.get(Calendar.YEAR));
+       assertEquals(Calendar.JANUARY, calendar.get(Calendar.MONTH));
+       assertEquals(1, calendar.get(Calendar.DAY_OF_MONTH));
+    }
+}

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

+package com.example.paktalin.agilejava;
+
+import junit.framework.TestCase;
+
+/**
+ * Created by Paktalin on 17/05/2018.
+ */
+
+public class LanguageTests extends TestCase {
+
+    public void testCharValue() {
+        char capitalA = 'A';
+
+        assertEquals(65, capitalA);
+        assertEquals('\u0041', capitalA);
+        assertEquals('\101', capitalA);
+    }
+
+    public void testConcatenation() {
+        assertEquals("abcd", "ab".concat("cd"));
+        assertEquals("abcd", "ab" + "cd");
+        assertEquals("abcd", "ab" + "c" + "d");
+    }
+
+}

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

+package com.example.paktalin.agilejava;
+
+import junit.framework.TestCase;
+
+
+/**
+ * Created by Paktalin on 17/05/2018.
+ */
+
+public class RosterReporterTest extends TestCase {
+
+    public void testRosterReport() {
+        CourseSession session = new CourseSession("ENGL", "101",
+                new DateUtil().createDate(2003, 1, 6));
+
+        session.enroll(new Student("A"));
+        session.enroll(new Student("B"));
+
+        String rosterReport = new RosterReporter(session).getReport();
+        assertEquals(
+                RosterReporter.ROSTER_REPORT_HEADER +
+                        "A" + RosterReporter.NEW_LINE +
+                        "B" + RosterReporter.NEW_LINE +
+                        RosterReporter.ROSTER_REPORT_FOOTER + "2" +
+                        RosterReporter.NEW_LINE, rosterReport);
+    }
+}