refactoring: extracting sampleProfs in AdministrationTest file

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

@@ -10,11 +10,13 @@ class AdministrationTest {
     private static final Course sampleCourse = new Course("Math", "M101", 4);
     private static final Student sampleStudent = new Student("Walter White", "S123456", "Student");
     private static final Student sampleStudent2 = new Student("Jesse Pinkman", "S789012", "Student");
+    private static final Professor sampleProf = new Professor("P1001", "Aaron Levi", "Professor");
+    private static final Professor sampleProf2 = new Professor("P1002", "Diana Richter", "Professor");
 
     // Test the findProfessorById Method
     @Test
     void findProfessorById() {
-        Professor prof1 = new Professor("P1001", "Aaron", "Professor");
+        Professor prof1 = sampleProf;
 
         admin.addProfessor(prof1);
 
@@ -26,7 +28,7 @@ class AdministrationTest {
     @Test
     void deleteProfessor() {
         Administration administration = new Administration();
-        Professor professor = new Professor("P1002", "Diana", "Professor");
+        Professor professor = sampleProf2;
 
         administration.addProfessor(professor);
         assertTrue(administration.deleteProfessor("P1002"));
@@ -37,11 +39,11 @@ class AdministrationTest {
     void testAddProfessor() {
         Administration administration = new Administration();
 
-        Professor newProfessor = new Professor("P2001", "Dr. Jane Smith", "Professor");
+        Professor newProfessor = sampleProf2;
 
         administration.addProfessor(newProfessor);
 
-        Professor retrievedProfessor = administration.findProfessorById("P2001");
+        Professor retrievedProfessor = administration.findProfessorById("P1002");
 
         assertNotNull(retrievedProfessor, "Professor should be found in the administration.");
         assertEquals(newProfessor.getProfessorID(), retrievedProfessor.getProfessorID(), "The retrieved professor's ID should match the original.");