Lesson 7 complete

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

+package com.example.paktalin.agilejava;
+
+/**
+ * Created by Paktalin on 02/06/2018.
+ */
+
+class Performance {
+    private int[] tests;
+
+    double average() {
+        if (tests.length == 0) return 0;
+        double total = 0;
+        for (int score : tests)
+            total += score;
+        return total / tests.length;
+    }
+
+    void setNumberOfTests(int numberOfTests) {
+        tests = new int[numberOfTests];
+    }
+
+    void set(int index, int score) {
+        tests[index] = score;
+    }
+
+    void setScores(int... scores) {
+        if (tests == null)
+            tests = new int[scores.length];
+        System.arraycopy(scores, 0, tests, 0, tests.length);
+
+    }
+
+    int get(int index) {
+        return tests[index];
+    }
+}

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

@@ -6,13 +6,14 @@ import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.GregorianCalendar;
+import java.util.Iterator;
 import java.util.List;
 
 /**
  * Created by Paktalin on 30/05/2018.
  */
 
-public abstract class Session implements Comparable<Session>{
+public abstract class Session implements Comparable<Session>, Iterable<Student>{
     private String department;
     private String number;
     private List<Student> students = new ArrayList<>();
@@ -33,6 +34,12 @@ public abstract class Session implements Comparable<Session>{
         return this.getNumber().compareTo(that.getNumber());
     }
 
+    @NonNull
+    @Override
+    public Iterator<Student> iterator() {
+        return students.iterator();
+    }
+
     void setNumberOfCredits(int numberOfCredits) {
         this.numberOfCredits = numberOfCredits;
     }
@@ -44,13 +51,15 @@ public abstract class Session implements Comparable<Session>{
 
     double getAverageGpaForPartTimeStudents() {
         double total = 0;
-        int counter = 0;
-        for (Student student : getAllStudents())
-            if (!student.isFullTime()) {
-                counter++;
-                total += student.getGpa();
-            }
-        return total / counter;
+        int count = 0;
+        for (Student student : getAllStudents()) {
+            if (student.isFullTime())
+                continue;
+            count++;
+            total += student.getGpa();
+        }
+        if (count == 0) return 0.0;
+        return total / count;
     }
 
     protected abstract int getSessionLength();

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

@@ -7,7 +7,7 @@ import java.util.List;
  * Created by Paktalin on 15/05/2018.
  */
 
-class Student {
+public class Student {
     private String name;
     private String firstName = "", middleName = "", lastName;
     private int credits;
@@ -16,6 +16,7 @@ class Student {
     private String state = "";
     private List<Grade> grades = new ArrayList<>();
     private BasicGradingStrategy gradingStrategy = new BasicGradingStrategy();
+    private List<Integer> charges = new ArrayList<>();
 
     enum Grade {
         A(4), B(3), C(2), D(1), F(0);
@@ -28,7 +29,7 @@ class Student {
         }
     }
 
-    Student(String fullName) {
+    public Student(String fullName) {
         setNames(fullName);
         credits = 0;
     }
@@ -41,6 +42,17 @@ class Student {
        grades.add(grade);
     }
 
+    void addCharge(int charge) {
+        charges.add(charge);
+    }
+
+    int totalCharges() {
+        int total = 0;
+        for (Integer charge : charges)
+            total += charge;
+        return total;
+    }
+
     private void setNames(String fullName) {
         this.name = fullName;
         String[] nameSplit = fullName.split(" ");
@@ -89,7 +101,7 @@ class Student {
         return credits;
     }
 
-    String getName() {
+    public String getName() {
         return name;
     }
 

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

@@ -3,7 +3,7 @@ package com.example.paktalin.agilejava;
 import com.example.paktalin.agilejava.language_tests.LanguageTests;
 import com.example.paktalin.agilejava.language_tests.LoopTest;
 import com.example.paktalin.agilejava.language_tests.SuperClassTest;
-import com.example.paktalin.agilejava.summer.SummerCourseSession;
+import com.example.paktalin.agilejava.summer.SummerCourseSessionTest;
 
 import junit.framework.TestSuite;
 
@@ -26,6 +26,7 @@ public class AllTests extends TestSuite {
         suite.addTestSuite(ReportCardTest.class);
         suite.addTestSuite(BasicGradingStrategyTest.class);
         suite.addTestSuite(HonorsGradingStrategyTest.class);
+        suite.addTestSuite(PerformanceTest.class);
 
         suite.addTestSuite(LanguageTests.class);
         suite.addTestSuite(SuperClassTest.class);

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

+package com.example.paktalin.agilejava;
+
+import junit.framework.TestCase;
+
+/**
+ * Created by Paktalin on 02/06/2018.
+ */
+
+public class PerformanceTest extends TestCase {
+    static private final double TOLERANCE = 0.005;
+    Performance performance;
+
+    @Override
+    protected void setUp() throws Exception {
+        performance = new Performance();
+
+    }
+
+    public void testAverage() {
+        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 testVarargs() {
+        performance.setScores(80, 90, 100);
+        assertEquals(80, performance.get(0));
+    }
+
+}

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

@@ -2,7 +2,9 @@ package com.example.paktalin.agilejava;
 
 import junit.framework.TestCase;
 
+import java.util.ArrayList;
 import java.util.Date;
+import java.util.List;
 
 /**
  * Created by Paktalin on 30/05/2018.
@@ -78,6 +80,14 @@ abstract public class SessionTest extends TestCase {
         assertEquals(2.5, session.getAverageGpaForPartTimeStudents(), 0.05);
     }
 
+    public void testIterate() {
+        enrollStudents(session);
+        List<Student> results = new ArrayList<>();
+        for (Student student : session)
+            results.add(student);
+        assertEquals(session.getAllStudents(), results);
+    }
+
     private void createPartTimer(String name, Student.Grade grade) {
         Student partTimer = new Student(name);
         partTimer.addGrade(grade);
@@ -91,4 +101,10 @@ abstract public class SessionTest extends TestCase {
         student.addCredits(Student.CREDITS_REQUIRED_FOR_FULL_TIME);
         return student;
     }
+
+    private void enrollStudents(Session session) {
+        session.enroll(new Student("1"));
+        session.enroll(new Student("2"));
+        session.enroll(new Student("3"));
+    }
 }

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

@@ -80,6 +80,14 @@ public class StudentTest extends TestCase {
         assertGpa(student, 2.8);
     }
 
+    public void testCharges() {
+        Student student = new Student("a");
+        student.addCharge(500);
+        student.addCharge(200);
+        student.addCharge(399);
+        assertEquals(1099, student.totalCharges());
+    }
+
     private void assertGpa(Student student, double expectedGpa) {
         final double GRADE_TOLERANCE = 0.05;
         assertEquals(expectedGpa, student.getGpa(), GRADE_TOLERANCE);

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

 package com.example.paktalin.agilejava.language_tests;
 
+import com.example.paktalin.agilejava.Student;
+
 import junit.framework.TestCase;
 
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
+import java.util.StringTokenizer;
 
 /**
  * Created by Paktalin on 17/05/2018.
@@ -78,7 +82,39 @@ public class LanguageTests extends TestCase {
                 break;
         }
         assertEquals(6, totalPoints);
+    }
+
+    //Old way casting
+    public void testCasting() {
+        List students = new ArrayList();
+        students.add(new Student("a"));
+        students.add(new Student("b"));
+
+        List names = new ArrayList();
+
+        Iterator it = students.iterator();
+        while (it.hasNext()) {
+            Student student = (Student)it.next();
+            names.add(student.getName());
+        }
+
+        assertEquals("a", names.get(0));
+        assertEquals("b", names.get(1));
+    }
+
+    //Old way splitting
+    public void testTokenizer() {
+        String name = "Jane Doe";
+        assertEquals("Jane", split(name).get(0));
+        assertEquals("Doe", split(name).get(1));
+    }
 
+    private List<String> split(String string) {
+        List<String> results = new ArrayList<>();
+        StringTokenizer tokenizer = new StringTokenizer(string, " ");
+        while (tokenizer.hasMoreTokens())
+            results.add(tokenizer.nextToken());
+        return results;
     }
 
 }

app/src/test/java/com/example/paktalin/agilejava/language_tests/LoopTest.java

@@ -2,6 +2,9 @@ package com.example.paktalin.agilejava.language_tests;
 
 import junit.framework.TestCase;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Created by Paktalin on 01/06/2018.
  */
@@ -77,4 +80,34 @@ public class LoopTest extends TestCase {
         }
         return source.substring(0, i + 1);
     }
+
+    public void testLabeledBreak() {
+        List<List<String>> table = new ArrayList<>();
+
+        List<String> row1 = new ArrayList<>();
+        row1.add("5");
+        row1.add("2");
+
+        List<String> row2 = new ArrayList<>();
+        row2.add("3");
+        row2.add("4");
+
+        table.add(row1);
+        table.add(row2);
+        assertTrue(found(table, "3"));
+    }
+
+    private boolean found(List<List<String>> table, String target) {
+        boolean found = false;
+
+        search:
+        for (List<String> row : table)
+            for (String value : row) {
+                if (value.equals(target)) {
+                    found = true;
+                    break search;
+                }
+            }
+        return found;
+    }
 }

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

-package com.example.paktalin.agilejava;
+package com.example.paktalin.agilejava.summer;
 
+import com.example.paktalin.agilejava.DateUtil;
+import com.example.paktalin.agilejava.SessionTest;
 import com.example.paktalin.agilejava.summer.SummerCourseSession;
 
 import java.util.Date;