added test

src/test/java/rocks/zipcode/io/quiz4/collections/zipcodewilmington/GetStudyMapTest.java

  */
 public class GetStudyMapTest {
     @Test
+    public void test0() {
+        // given
+        ZipCodeWilmington zipCodeWilmington = new ZipCodeWilmington();
+        Student expectedStudent1 = new Student();
+        Double expectedStudyTime1 = 0.0;
+        expectedStudent1.learn(expectedStudyTime1);
+        zipCodeWilmington.enroll(expectedStudent1);
+
+
+
+        // when
+        Map<Student, Double> studyMap = zipCodeWilmington.getStudyMap();
+        List<Map.Entry<Student, Double>> entrySet = new ArrayList<>(studyMap.entrySet());
+        Map.Entry<Student, Double> firstEntry = entrySet.get(0);
+
+        Student actualStudent1 = firstEntry.getKey();
+        Double actualStudyTime1 = firstEntry.getValue();
+
+
+
+        // then
+        Assert.assertEquals(expectedStudent1, actualStudent1);
+        Assert.assertEquals(expectedStudyTime1, actualStudyTime1);
+    }
+
+    @Test
     public void test1() {
         // given
         ZipCodeWilmington zipCodeWilmington = new ZipCodeWilmington();
         Assert.assertEquals(expectedStudent3, actualStudent3);
         Assert.assertEquals(expectedStudyTime3, actualStudyTime3);
     }
+
+
+
+
+    @Test
+    public void test4() {
+        // given
+        ZipCodeWilmington zipCodeWilmington = new ZipCodeWilmington();
+        Student expectedStudent1 = new Student(3);
+        Student expectedStudent2 = new Student(4);
+        Student expectedStudent3 = new Student(5);
+
+        zipCodeWilmington.enroll(expectedStudent1);
+        zipCodeWilmington.enroll(expectedStudent2);
+        zipCodeWilmington.enroll(expectedStudent3);
+
+        Double expectedStudyTime1 = 500.0;
+        Double expectedStudyTime2 = 1000.0;
+        Double expectedStudyTime3 = 2000.0;
+
+        expectedStudent1.learn(expectedStudyTime1);
+        expectedStudent2.learn(expectedStudyTime2);
+        expectedStudent3.learn(expectedStudyTime3);
+
+
+
+        // when
+        Map<Student, Double> studyMap = zipCodeWilmington.getStudyMap();
+        List<Map.Entry<Student, Double>> entrySet = new ArrayList<>(studyMap.entrySet());
+        Map.Entry<Student, Double> firstEntry = entrySet.get(0);
+        Map.Entry<Student, Double> secondEntry = entrySet.get(1);
+        Map.Entry<Student, Double> thirdEntry = entrySet.get(2);
+
+        Student actualStudent1 = firstEntry.getKey();
+        Student actualStudent2 = secondEntry.getKey();
+        Student actualStudent3 = thirdEntry.getKey();
+
+        Double actualStudyTime1 = firstEntry.getValue();
+        Double actualStudyTime2 = secondEntry.getValue();
+        Double actualStudyTime3 = thirdEntry.getValue();
+
+
+
+        // then
+        Assert.assertEquals(expectedStudent1, actualStudent1);
+        Assert.assertEquals(expectedStudyTime1, actualStudyTime1);
+
+
+        Assert.assertEquals(expectedStudent2, actualStudent2);
+        Assert.assertEquals(expectedStudyTime2, actualStudyTime2);
+
+
+        Assert.assertEquals(expectedStudent3, actualStudent3);
+        Assert.assertEquals(expectedStudyTime3, actualStudyTime3);
+    }
+
+    @Test
+    public void test5() {
+        // given
+        ZipCodeWilmington zipCodeWilmington = new ZipCodeWilmington();
+        Student expectedStudent1 = new Student(3);
+        Student expectedStudent2 = new Student(4);
+
+        zipCodeWilmington.enroll(expectedStudent1);
+        zipCodeWilmington.enroll(expectedStudent2);
+
+        Double expectedStudyTime1 = 500.0;
+        Double expectedStudyTime2 = 1000.0;
+
+        expectedStudent1.learn(expectedStudyTime1);
+        expectedStudent2.learn(expectedStudyTime2);
+
+
+
+        // when
+        Map<Student, Double> studyMap = zipCodeWilmington.getStudyMap();
+        List<Map.Entry<Student, Double>> entrySet = new ArrayList<>(studyMap.entrySet());
+        Map.Entry<Student, Double> firstEntry = entrySet.get(0);
+        Map.Entry<Student, Double> secondEntry = entrySet.get(1);
+
+        Student actualStudent1 = firstEntry.getKey();
+        Student actualStudent2 = secondEntry.getKey();
+
+        Double actualStudyTime1 = firstEntry.getValue();
+        Double actualStudyTime2 = secondEntry.getValue();
+
+
+
+        // then
+        Assert.assertEquals(expectedStudent1, actualStudent1);
+        Assert.assertEquals(expectedStudyTime1, actualStudyTime1);
+
+
+        Assert.assertEquals(expectedStudent2, actualStudent2);
+        Assert.assertEquals(expectedStudyTime2, actualStudyTime2);
+    }
 }

src/test/java/rocks/zipcode/io/quiz4/collections/zipcodewilmington/LectureTest.java

                 new Student());
     }
 
+
+    @Test
+    public void test4() {
+        test(50.0,
+                new Student(),
+                new Student(),
+                new Student(),
+                new Student());
+    }
+
+    @Test
+    public void test5() {
+        test(25.0,
+                new Student(),
+                new Student(),
+                new Student(),
+                new Student(),
+                new Student());
+    }
+
+
+    @Test
+    public void test6() {
+        test(12.5,
+                new Student(),
+                new Student(),
+                new Student(),
+                new Student(),
+                new Student(),
+                new Student());
+    }
+
     public void test(Double lectureTime, Student... students) {
         // given
         ZipCodeWilmington zipCodeWilmington = new ZipCodeWilmington();