Added test for initializeDummyData in AdministrationTest class

src/test/java/org/example/AdministrationTest.java

@@ -287,4 +287,22 @@ class AdministrationTest {
         // Finding the added course
         assertEquals(course, admin.findCourseByID("M101"));
     }
-}
+    @Test
+    public void testInitializeDummyData(){
+        admin.initializeDummyData();
+
+            // Check if students are initialized correctly
+            assertEquals(2, admin.getStudents().size());
+
+            // Check if professors are initialized correctly
+            assertEquals(2, admin.getProfessors().size());
+
+            // Check if admins are initialized correctly
+            assertEquals(2, admin.getAdmins().size());
+
+            // Check if courses are initialized correctly
+            assertEquals(2, admin.getCourses().size());
+        }
+
+
+    }