Test: added testReadFromFile() for the professor Data

src/test/java/org/example/ProfessorTest.java

@@ -1,4 +1,24 @@
 package org.example;
 
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
 public class ProfessorTest {
+
+    @Test
+    void testReadFromFile() throws IOException {
+        Professor professor = new Professor("P1002", "Jane Doe", "Professor");
+        professor.writeToFile();
+
+        List<Professor> professors = Professor.readFromFile();
+
+        assertEquals(1, professors.size());
+        assertEquals("P1002", professors.get(0).getProfessorID());
+        assertEquals("Jane Doe", professors.get(0).getName());
+        assertEquals("Professor", professors.get(0).getRole());
+    }
 }