First commit

src/Test/CourseTest.java

+package Test;
+
+import com.university.Course;
+import com.university.Department;
+import com.university.Professor;
+import com.university.Student;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class CourseTest {
+    static Student student;
+    static Department department;
+    static Course course;
+    static Professor professor;
+
+    @BeforeAll
+
+    public static void creatCourse (){
+        department = new Department("ce");
+        student = new Student("Amir", "87", "am", department);
+        professor = new Professor(department, "mmd");
+        course = new Course("1", "az", department, professor, 100);
+
+    }
+
+    @Test
+
+    public void testCourse(){
+
+        assertEquals("az", course.getName());
+        assertEquals("1", course.getID());
+        assertEquals("100", course.getCredit());
+        assertEquals(department, course.getDepartment());
+        assertEquals(professor, course.getProfessor());
+        assertEquals(student, course.getStudents());
+
+    }
+
+}
\ No newline at end of file

src/Test/DepartmentTest.java

+package Test;
+
+import com.university.Course;
+import com.university.Department;
+import com.university.Professor;
+import com.university.Student;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DepartmentTest {
+
+    static Department department;
+    static Student student;
+    static Course course;
+    static Professor professor;
+
+    @BeforeAll
+
+    public static void departmentCreat() {
+
+        department = new Department("ce");
+        student = new Student("Amir", "87", "am", department);
+        professor = new Professor(department, "mmd");
+        course = new Course("1", "az", department, professor, 100);
+    }
+
+    @Test
+
+    public void testDepartment(){
+
+
+
+    }
+
+}
\ No newline at end of file

src/Test/ProfessorTest.java

+package Test;
+
+import com.university.Course;
+import com.university.Department;
+import com.university.Professor;
+import com.university.Student;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ProfessorTest {
+
+    static Department department;
+    static Student student;
+    static Course course;
+    static Professor professor;
+
+    @BeforeAll
+
+    public static void creatProfessor() {
+
+        department = new Department("ce");
+        student = new Student("Amir", "87", "am", department);
+        professor = new Professor(department, "mmd");
+        course = new Course("1", "az", department, professor, 100);
+        department.addCourse(course);
+        department.addProfessor(professor);
+        department.addStudent(student);
+    }
+
+    @Test
+
+    public void testProfessor() {
+
+        assertEquals("mmd", professor.getName());
+        assertEquals(department, professor.getDepartment());
+
+    }
+
+}
\ No newline at end of file

src/Test/StudentTest.java

+package Test;
+
+import com.university.Course;
+import com.university.Department;
+import com.university.Professor;
+import com.university.Student;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class StudentTest {
+
+    static Student student;
+    static Department department;
+    static Course course;
+    static Professor professor;
+
+    @BeforeAll
+
+    public static void creatStudent() {
+
+        department = new Department("CE");
+        student = new Student("Amir", "87", "am", department);
+        course = new Course("1", "az", department, professor, 100);
+
+    }
+
+    @Test
+    public static void testName() {
+        assertEquals("Amir", student.getName());
+        assertEquals("87", student.getID());
+        assertEquals("ce", student.getMajor());
+        assertEquals(department, student.getDepartment());
+        assertEquals(course, student.getCourses());
+    }
+
+
+}
\ No newline at end of file

src/Test/UniversityTest.java

+package Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class UniversityTest {
+
+
+}
\ No newline at end of file

src/com/university/Course.java

+package com.university;
+
+import java.util.ArrayList;
+
+public class Course {
+
+    String id;
+    String name;
+    Department department;
+    Professor professor;
+    int credit;
+    ArrayList<Student> students = new ArrayList<>();
+
+    public Course(String ID, String name, Department department, Professor professor, int credit) {
+
+    }
+
+    public String getID(){
+        return this.id;
+    }
+
+    public Department getDepartment(){
+        return this.department;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public ArrayList<Student> getStudents() {
+        return this.students;
+    }
+
+    public Professor getProfessor() {
+        return this.professor;
+    }
+
+    public int getCredit() {
+        return this.credit;
+    }
+
+    public void enrollStudent(Student student){
+        this.students.add(student);
+
+    }
+
+}

src/com/university/Department.java

+package com.university;
+
+import java.util.ArrayList;
+
+public class Department {
+
+    String name;
+    ArrayList<Student> students = new ArrayList();
+    ArrayList<Course> courses = new ArrayList<>();
+    ArrayList<Professor> professors = new ArrayList<>();
+
+    public Department(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public void addStudent(Student student) {
+        this.students.add(student);
+    }
+
+    public ArrayList<Student> getStudents() {
+        return this.students;
+    }
+    public void removeStudent(Student student) {
+        this.students.remove(student);
+    }
+
+    public void addCourse(Course course) {
+        this.courses.add(course);
+    }
+
+    public ArrayList<Course> getCourses() {
+        return this.courses;
+    }
+
+    public void removeCourse(Course course) {
+        this.courses.remove(course);
+    }
+
+    public void addProfessor(Professor professor) {
+        this.professors.add(professor);
+    }
+
+    public ArrayList<Professor> getProfessors() {
+        return this.professors;
+    }
+
+    public void removeProfessor(Professor professor) {
+        this.professors.remove(professor);
+    }
+
+}

src/com/university/Professor.java

+package com.university;
+
+import java.util.ArrayList;
+
+public class Professor {
+
+    Department department;
+    String name;
+    ArrayList<Course> courses = new ArrayList<>();
+
+    public Professor(Department department, String name) {
+        this.department = department;
+        this.name = name;
+    }
+
+    public Department getDepartment() {
+        return this.department;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public ArrayList<Course> getCourses() {
+        return this.courses;
+    }
+}

src/com/university/Student.java

+package com.university;
+
+import java.util.ArrayList;
+
+public class Student {
+
+    String name;
+    String id;
+    String major;
+    Department department;
+    ArrayList<Course> courses = new ArrayList<>();
+
+    public Student(String name, String ID, String major, Department department) {
+
+        this.name = name;
+        this.id = ID;
+        this.major = major;
+        this.department = department;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public String getID() {
+        return this.id;
+    }
+
+    public String getMajor() {
+        return this.major;
+    }
+
+    public Department getDepartment() {
+        return this.department;
+    }
+
+    public ArrayList<Course> getCourses() {
+        return  this.courses;
+    }
+
+    public void addCourse(Course course) {
+        this.courses.add(course);
+    }
+}

src/com/university/University.java

+package com.university;
+
+import java.util.ArrayList;
+
+public class University {
+
+    ArrayList<Department> departments = new ArrayList<>();
+
+    public ArrayList<Department> getDepartments() {
+        return this.departments;
+    }
+
+    public void addDepartment(Department department) {
+        this.departments.add(department);
+    }
+
+    public void removeDepartment(Department department) {
+        this.departments.remove(department);
+    }
+}