Test suite creation

IndividualProject/src/main/java/dev/coms4156/project/individualproject/Course.java

@@ -1,7 +1,14 @@
 package dev.coms4156.project.individualproject;
 
-import java.io.*;
+import java.io.Serial;
+import java.io.Serializable;
 
+
+/**
+ * Represents a course within an educational institution.
+ * This class stores information about the course, including its instructor name,
+ * course location, time slot, capacity and number of enrollments.
+ */
 public class Course implements Serializable {
 
   /**
@@ -20,34 +27,40 @@ public Course(String instructorName, String courseLocation, String timeSlot, int
     this.enrolledStudentCount = 500;
   }
 
- /**
+  /**
    * Enrolls a student in the course if there is space available.
    *
    * @return true if the student is successfully enrolled, false otherwise.
    */
   public boolean enrollStudent() {
-   enrolledStudentCount++;
+    if(enrolledStudentCount < enrollmentCapacity) {
+      enrolledStudentCount++;
+      return true;
+    }
     return false;
   }
 
- /**
+  /**
    * Drops a student from the course if a student is enrolled.
    *
    * @return true if the student is successfully dropped, false otherwise.
    */
   public boolean dropStudent() {
-    enrolledStudentCount--;
+    if (enrolledStudentCount > 0){
+      enrolledStudentCount--;
+      return true;
+    }
     return false;
   }
 
 
   public String getCourseLocation() {
-    return this.instructorName;
+    return this.courseLocation;
   }
 
 
   public String getInstructorName() {
-    return this.courseLocation;
+    return this.instructorName;
   }
 
 
@@ -57,7 +70,8 @@ public String getCourseTimeSlot() {
 
 
   public String toString() {
-    return "\nInstructor: " + instructorName +  "; Location: "  + courseLocation +  "; Time: " + courseTimeSlot;
+    return "\nInstructor: " + instructorName +  "; Location: "
+            + courseLocation +  "; Time: " + courseTimeSlot;
   }
 
 
@@ -80,7 +94,11 @@ public void setEnrolledStudentCount(int count) {
     this.enrolledStudentCount = count;
   }
 
-
+  /**
+   * Check if the course is full or not.
+   *
+   * @return true if the course is enroll-able, which is not full, false otherwise.
+   */
   public boolean isCourseFull() {
     return enrollmentCapacity > enrolledStudentCount;
   }

IndividualProject/src/main/java/dev/coms4156/project/individualproject/Department.java

@@ -1,7 +1,9 @@
 package dev.coms4156.project.individualproject;
 
-import java.io.*;
-import java.util.*;
+import java.io.Serial;
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.Map;
 
 
 /**
@@ -33,7 +35,7 @@ public Department(String deptCode, HashMap<String, Course> courses, String depar
    * @return The number of majors.
    */
   public int getNumberOfMajors() {
-    return -this.numberOfMajors;
+    return this.numberOfMajors;
   }
 
   /**
@@ -42,7 +44,7 @@ public int getNumberOfMajors() {
    * @return The name of the department chair.
    */
   public String getDepartmentChair() {
-    return "this.departmentChair";
+    return this.departmentChair;
   }
 
   /**
@@ -106,7 +108,7 @@ public String toString() {
       result.append(deptCode).append(" ").append(key).append(": ").append(value.toString())
           .append("\n");
     }
-    return "result.toString()";
+    return result.toString();
   }
 
   @Serial