def getSectionsAndCoursesByUser(self, username): # Retval[0] = courses, Retval[1] = sections from Managers.sectionManager import SectionManager as SM from Managers.courseManager import CourseManager as CM tempSectionManager = SM(self.storage) tempCourseManager = CM(self.storage) courseList = [] sectionList = [] for section in self.storage.get_sections_by(): if section.instructor is not None and section.instructor.username == username: sectionList.append( tempSectionManager.view({ "dept": section.course.dept, "cnum": section.course.cnum, "snum": section.snum })[0]) # if not in courses list already, then add to it bCourseAddToList = True #temp bool for course logic for existingCourse in courseList: # If a course already exists we don't add a new one if existingCourse["cnum"] == section.course.cnum: bCourseAddToList = False if bCourseAddToList: courseList.append( tempCourseManager.view({ "dept": section.course.dept, "cnum": section.course.cnum })[0]) return courseList, sectionList
class sectionTest(TestCase): def setUp(self): self.storage = DjangoStorageManager self.section_manager = SM(self.storage) self.course_manager = CM(self.storage) self.user_manager = UM(self.storage) def tearDown(self): pass # Test correct adding (basic), with courses def test_add(self): fields = {"dept": "CS", "cnum": "351", "snum": "401"} self.assertEqual(len(self.course_manager.view({})), 0, "Should have no courses to start") self.assertFalse( self.section_manager.add(fields)[0], "Can't add when there is no course!") self.course_manager.add({"dept": "CS", "cnum": "351"}) self.assertTrue(self.section_manager.add(fields)[0]) self.assertFalse( self.section_manager.add(fields)[0], "Shouldn't be able to add anymore") # Test correct adding and editing (assigning) def test_add_and_assign_ta(self): sectionFields = {"dept": "CS", "cnum": "351", "snum": "801"} userFields = { "username": "******", "password": "******", "role": dict(User.ROLES)['T'] } self.user_manager.add(userFields) self.course_manager.add({"dept": "CS", "cnum": "351"}) self.assertTrue(self.section_manager.add(sectionFields)[0]) # Course integration retVal = self.storage.get_course(dept="CS", cnum="351") self.assertEqual(retVal.sections.first().snum, "801", "course should have a working 'sections' field!") # Assigning TA sectionFields["instructor"] = "john" self.assertFalse( self.section_manager.edit(sectionFields)[0], "john doesn't exist!") sectionFields["instructor"] = "teach" self.assertFalse( self.section_manager.edit(sectionFields)[0], "shouldn't be able to edit, stype not lab when teach is TA") sectionFields["stype"] = dict(Section.SEC_TYPE)["lab"] self.assertTrue( self.section_manager.edit(sectionFields)[0], "valid assignment") # User integration, should now have courses and sections assigned retVal = self.storage.get_user("teach") self.assertEqual(retVal.sections.first().snum, "801", "user should have a working 'sections' field") self.assertEqual(retVal.courses.first().cnum, "351", "user should have a working 'courses' field") # The SuperTest Basically #def test_assign_instructor_TAs_and_check_all_thorough(self): # pass # Test adding without requirements (cnum, dept, snum) def test_add_wrong_fields(self): secNocnum = {"snum": "401", "dept": "CS"} secNoSnum = {"cnum": "351", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertFalse( self.section_manager.add(secNocnum)[0], "Should return false when no course number is specified") self.assertFalse( self.section_manager.add(secNoSnum)[0], "Should return false when no section number is specified") self.assertFalse( self.section_manager.add(secNodept)[0], "Should return false when no department is specified") # user does not exist and shouldn't be able to be added def test_userNone(self): secUserInv = { "snum": "801", "instructor": "Bubba", "cnum": "351", "dept": "CS" } self.assertFalse( self.section_manager.add(secUserInv)[0], "User Bubba does not exist in the system") # test that adding fails when adding a new Section whose time and room conflict with another currently existing one def test_addRoomTimeConflict(self): secConflict = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 395, "instructor": "Gumby", "days": "W", "time": "12:30PM-1:00PM" } self.assertFalse( self.section_manager.add(secConflict)[0], "Section added conflicts with already created section") # test "section view secNum" command output def test_view(self): sectionFields = { "dept": "CS", "cnum": "351", "snum": "401", "stype": "Lecture", "instructor": "Rock" } userFields = { "username": "******", "password": "******", "role": dict(User.ROLES)['I'] } self.course_manager.add({"dept": "CS", "cnum": "351"}) self.user_manager.add(userFields) self.section_manager.add(sectionFields) retSection = self.section_manager.view({ "dept": "CS", "cnum": "351", "snum": "401" })[0] self.assertEqual(retSection["dept"], "CS") self.assertEqual(retSection["cnum"], "351") self.assertEqual(retSection["snum"], "401") self.assertEqual(retSection["stype"], "Lecture") self.assertEqual(retSection["instructor"], "Rock") self.assertEqual(retSection["course"]["cnum"], "351") # Important! self.assertEqual(retSection["course"]["sections"], ["nonrecursive"]) # Test to make sure 3 seperate sections can be viewed. Big test def test_view_all_comprehensive_integrated(self): self.course_manager.add({"dept": "CS", "cnum": "351"}) self.course_manager.add({"dept": "CS", "cnum": "337"}) sectionFields1 = { "dept": "CS", "cnum": "351", "snum": "401", "stype": "Lecture", "instructor": "Boyland" } sectionFields2 = { "dept": "CS", "cnum": "351", "snum": "801", "stype": "Lab", "instructor": "Tanawat" } sectionFields3 = { "dept": "CS", "cnum": "337", "snum": "401", "stype": "Lecture", "instructor": "Sorenson" } self.user_manager.add({ "username": "******", "role": dict(User.ROLES)["I"] }) self.user_manager.add({ "username": "******", "role": dict(User.ROLES)["T"] }) self.user_manager.add({ "username": "******", "role": dict(User.ROLES)["I"] }) self.section_manager.add(sectionFields1) self.section_manager.add(sectionFields2) self.section_manager.add(sectionFields3) retList = self.section_manager.view({}) self.assertEqual(len(retList), 3) retFields1 = retList[0] retFields2 = retList[1] retFields3 = retList[2] # Ordered properly? self.assertEqual(retFields1["cnum"], "337") self.assertEqual(retFields2["cnum"], "351") self.assertEqual(retFields2["snum"], "401") self.assertEqual(retFields3["cnum"], "351") self.assertEqual(retFields3["snum"], "801") def test_delete(self): toDel = {"snum": "401", "cnum": "351", "dept": "CS"} self.course_manager.add({"dept": "CS", "cnum": "351"}) self.section_manager.add(toDel) self.assertTrue( self.section_manager.delete(toDel)[0], "Delete was not successful") def test_delete_doesntexist(self): toDel = {"snum": "401", "cnum": "351", "dept": "CS"} self.assertFalse( self.section_manager.delete(toDel)[0], "Delete shouldn't be successful") # make sure required information is there to delete def test_delNoInfo(self): secNoSnum = {"cnum": "351", "dept": "CS"} secNocnum = {"snum": "401", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertFalse( self.section_manager.delete(secNocnum)[0], "Should return false when no course number is specified") self.assertFalse( self.section_manager.delete(secNoSnum)[0], "Should return false when no section number is specified") self.assertFalse( self.section_manager.delete(secNodept)[0], "Should return false when no department is specified") def test_edit(self): toEdit = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "1:00PM-2:00PM" } self.assertTrue(self.section_manager.edit(toEdit), "Edit was not successful") # Test edit without enough info def test_editNoInfo(self): secNocnum = {"snum": "401", "dept": "CS"} secNoSnum = {"cnum": "351", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertFalse( self.section_manager.delete(secNocnum)[0], "Should return false when no course number is specified") self.assertFalse( self.section_manager.delete(secNoSnum)[0], "Should return false when no section number is specified") self.assertFalse( self.section_manager.delete(secNodept)[0], "Should return false when no department is specified") # Test edit when given various invalid field inputs def test_editInvalid(self): editDays = { "cnum": "351", "dept": "CS", "snum": "401", "days": "Wrong", "instructor": "Rock", "room": 400, "time": "1:00PM-2:00PM" } editIns = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Crunchy", "room": 400, "time": "1:00PM-2:00PM" } editRoom = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": "Wrong", "time": "1:00PM-2:00PM" } editTime = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "Wrong" } self.assertFalse( self.section_manager.edit(editDays)[0], "Should return false due to invalid days input") self.assertFalse( self.section_manager.edit(editIns)[0], "Should return false due to invalid instructor") self.assertFalse( self.section_manager.edit(editRoom)[0], "Should return false due to invalid room number") self.assertFalse( self.section_manager.edit(editTime)[0], "Should return false due to invalid time") # Need to make sure that the "time" field accepts multiple ways of inputting (e.g "01:30 PM", "1:30 PM" def test_editTimes(self): timeOne = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "01:30PM-02:30PM", "stype": "Lecture" } timeTwo = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "3:30PM-4:30PM", "stype": "Lecture" } self.course_manager.add({"dept": "CS", "cnum": "351"}) self.user_manager.add({ "username": "******", "role": dict(User.ROLES)['I'] }) self.assertTrue( self.section_manager.add(timeOne)[0], "Adding time was not successful") self.assertTrue( self.section_manager.edit(timeTwo)[0], "Editing time was not successful") # Test that if, upon editing, the if the new room and time conflict with a previously added section, it fails. def test_editRoomTimeConflict(self): newSec = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 901, "instructor": "Gumby", "days": "T", "time": "4:00PM-5:00PM" } self.section_manager.add(newSec) secConflict = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 395, "instructor": "Gumby", "days": "W", "time": "12:30PM-1:00PM" } self.assertFalse( self.section_manager.edit(secConflict)[0], "Section added conflicts with already created section")
class sectionTest(unittest.TestCase): def setUp(self): self.course = CourseManager() self.course.add(dept="CS", cnum="251") self.db = StorageManager() Bob = User("Bob", "123", "Instructor") self.db.insert_user(Bob) Rob = User("Rob", "123") self.db.insert_user(Rob) Cobb = User("Randall Cobb", "123", "Instructor") self.db.insert_user(Cobb) self.course.add(dept="CS", cnum="351", instr="Bob", section="401") self.course.add(dept="CS", cnum="337") self.sec = SectionManager() def tearDown(self): del self.course del self.sec del self.db def test_add(self): self.assertEqual(self.sec.add("CS", "251", "401"), "Section Added: CS-251-401") self.assertEqual(self.sec.add("CS", "251", "401", "Bob"), "Section Added: CS-251-401 instructor: Bob") def test_addNoInfo(self): self.assertEqual( "Could not complete addition, section number is needed", self.sec.add(dept="CS", cnum="251")) self.assertEqual( "Could not complete addition, section number is needed", self.sec.add(dept="CS", cnum="251", ins="Bob")) self.assertEqual( "Could not complete addition, course number is needed", self.sec.add(dept="CS", snum="401", ins="Bob")) self.assertEqual("Could not complete addition, department is needed", self.sec.add(cnum="251", snum="401", ins="Bob")) # user does not exist and shouldn't be able to be added def test_userNone(self): self.assertEqual( "Nobody does not exist in the system", self.sec.add(dept="CS", cnum="251", snum="401", ins="Nobody")) def test_notQualified(self): self.assertEqual( "User can't instruct the course", self.sec.add(dept="CS", cnum="337", snum="401", ins="Rob")) # test "section view secNum" command output def test_view(self): self.assertEqual(self.sec.view(dept="CS", cnum="351", snum="401"), "Course: CS-351\nSection: 401\nInstructor: Bob") # Test to make sure a course without a section will not be found def test_viewNot(self): self.assertEqual("Could not find CS-337-401", self.sec.view(dept="CS", cnum="337", snum="401")) def test_viewNoInfo(self): self.assertEqual("Could not complete view, section number is needed", self.sec.view(dept="CS", cnum="251")) self.assertEqual("Could not complete view, section number is needed", self.sec.view(dept="CS", cnum="251", ins="Bob")) self.assertEqual("Could not complete view, course number is needed", self.sec.view(dept="CS", snum="401", ins="Bob")) self.assertEqual("Could not complete view, department is needed", self.sec.view(cnum="251", snum="401", ins="Bob"))
class sectionTest(TestCase): def setUp(self): self.u1 = User.objects.create(username="******", first_name="Gimpy", last_name="McGoo", email="*****@*****.**", password="******", role="instructor") self.u1.save() self.c1 = Course.objects.create(cnum="351", name="Data Structures and Algorithms", description="N/A", dept="CS") self.c1.save() self.s1 = Section.objects.create(snum="401", stype="lecture", course=self.c1, room=395, instructor=self.u1, days="W", time="12:30PM-1:30PM") self.s1.save() self.u2 = User.objects.create(username="******", first_name="Jayson", last_name="Rock", email="*****@*****.**", password="******", role="instructor") self.u2.save() self.u3 = User.objects.create(username="******", first_name="Ron", last_name="Skimpy", email="*****@*****.**", password="******", role="administrator") self.u3.save() temp = storage() self.sec = SM() def tearDown(self): pass # Test correct adding def test_add(self): newSec = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 901, "instructor": "Gumby", "days": "T", "time": "4:00PM-5:00PM" } self.assertTrue(self.sec.add(newSec), "New section was not added") # Test add when given various invalid field inputs def test_addInvalid(self): addDays = { "cnum": "351", "dept": "CS", "snum": "401", "days": "Wrong", "instructor": "Rock", "room": 400, "time": "1:00PM-2:00PM", "snumNew": "402" } addIns = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Crunchy", "room": 400, "time": "1:00PM-2:00PM", "snumNew": "402" } addRoom = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": "Wrong", "time": "1:00PM-2:00PM", "snumNew": "402" } addTime = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "Wrong", "snumNew": "402" } addsnum = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "1:00PM-2:00PM", "snumNew": "Wrong" } self.assertFalse(self.sec.add(addDays), "Should return false due to invalid days input") self.assertFalse(self.sec.add(addIns), "Should return false due to invalid instructor") self.assertFalse(self.sec.add(addRoom), "Should return false due to invalid room number") self.assertFalse(self.sec.add(addTime), "Should return false due to invalid time") self.assertFalse(self.sec.add(addsnum), "Should return false due to invalid section number") # Test adding without requirements (cnum, dept, snum) def test_addNoInfo(self): secNocnum = {"snum": "401", "dept": "CS"} secNoSnum = {"cnum": "351", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertFalse( self.sec.add(secNocnum), "Should return false when no course number is specified") self.assertFalse( self.sec.add(secNoSnum), "Should return false when no section number is specified") self.assertFalse( self.sec.add(secNodept), "Should return false when no department is specified") # user does not exist and shouldn't be able to be added def test_userNone(self): secUserInv = { "snum": "801", "instructor": "Bubba", "cnum": "351", "dept": "CS" } self.assertFalse(self.sec.add(secUserInv), "User Bubba does not exist in the system") # test that adding fails when adding a new Section whose time and room conflict with another currently existing one def test_addRoomTimeConflict(self): secConflict = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 395, "instructor": "Gumby", "days": "W", "time": "12:30PM-1:00PM" } self.assertFalse( self.sec.add(secConflict), "Section added conflicts with already created section") # test "section view secNum" command output def test_view(self): toView = {"snum": "401", "cnum": "351", "dept": "CS"} self.assertEqual( self.sec.view(toView), "Course: CS-351<br>Section: 401<br>Instructor: Gumby<br>Meeting time(s): W 12:30PM-1:30PM" "<br>Room: 395") # Test to make sure a course without a section will not be found def test_viewNot(self): self.courseT = Course(cnum="337", name="Systems Programming", description="N/A", dept="CS") self.courseT.save() toView = {"snum": "401", "dept": "CS", "cnum": "337"} self.assertEqual("Could not find CS-337-401", self.sec.view(toView)) # Test view without enough information def test_viewNoInfo(self): secNocnum = {"snum": "401", "dept": "CS"} secNoSnum = {"cnum": "351", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertEqual( self.sec.view(secNocnum), "Could not complete viewing, course number is needed", "Should not be able to view without course specified") self.assertEqual( self.sec.view(secNoSnum), "Could not complete viewing, section number is needed", "Should not be able to view without section number specified") self.assertEqual( self.sec.view(secNodept), "Could not complete viewing, department is needed", "Should not be able to view without department specified") def test_delete(self): toDel = {"snum": "401", "cnum": "351", "dept": "CS"} self.assertTrue(self.sec.delete(toDel), "Delete was not successful") # make sure required information is there to delete def test_delNoInfo(self): secNoSnum = {"cnum": "351", "dept": "CS"} secNocnum = {"snum": "401", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertFalse( self.sec.delete(secNocnum), "Should return false when no course number is specified") self.assertFalse( self.sec.delete(secNoSnum), "Should return false when no section number is specified") self.assertFalse( self.sec.delete(secNodept), "Should return false when no department is specified") def test_edit(self): toEdit = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "1:00PM-2:00PM" } self.assertTrue(self.sec.edit(toEdit), "Edit was not successful") # Test edit without enough info def test_editNoInfo(self): secNocnum = {"snum": "401", "dept": "CS"} secNoSnum = {"cnum": "351", "dept": "CS"} secNodept = {"snum": "401", "cnum": "351"} self.assertFalse( self.sec.delete(secNocnum), "Should return false when no course number is specified") self.assertFalse( self.sec.delete(secNoSnum), "Should return false when no section number is specified") self.assertFalse( self.sec.delete(secNodept), "Should return false when no department is specified") # Test edit when given various invalid field inputs def test_editInvalid(self): editDays = { "cnum": "351", "dept": "CS", "snum": "401", "days": "Wrong", "instructor": "Rock", "room": 400, "time": "1:00PM-2:00PM" } editIns = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Crunchy", "room": 400, "time": "1:00PM-2:00PM" } editRoom = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": "Wrong", "time": "1:00PM-2:00PM" } editTime = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "Wrong" } self.assertFalse(self.sec.edit(editDays), "Should return false due to invalid days input") self.assertFalse(self.sec.edit(editIns), "Should return false due to invalid instructor") self.assertFalse(self.sec.edit(editRoom), "Should return false due to invalid room number") self.assertFalse(self.sec.edit(editTime), "Should return false due to invalid time") # Need to make sure that the "time" field accepts multiple ways of inputting (e.g "01:30 PM", "1:30 PM" def test_editTimes(self): timeOne = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "01:30PM-02:30PM" } timeTwo = { "cnum": "351", "dept": "CS", "snum": "401", "days": "MWF", "instructor": "Rock", "room": 400, "time": "3:30PM-4:30PM" } self.assertTrue(self.sec.edit(timeOne), "Editing time was not successful") self.assertTrue(self.sec.edit(timeTwo), "Editing time was not successful") # Test that if, upon editing, the if the new room and time conflict with a previously added section, it fails. def test_editRoomTimeConflict(self): newSec = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 901, "instructor": "Gumby", "days": "T", "time": "4:00PM-5:00PM" } self.sec.add(newSec) secConflict = { "snum": "801", "stype": "lab", "cnum": "351", "dept": "CS", "room": 395, "instructor": "Gumby", "days": "W", "time": "12:30PM-1:00PM" } self.assertFalse( self.sec.edit(secConflict), "Section added conflicts with already created section")
class CourseManager(ManagerInterface): def __init__(self, dm: dsm, parent=None): # Right now only CS dept courses can be added with manager. # Dept list can be changed to support more departments self.depts = ['CS', 'MATH'] self.storage = dm if parent is None: from Managers.sectionManager import SectionManager as SM self.section_manager = SM(self.storage) else: self.section_manager = parent # Adds a Course to the database, returning True if added, False if not added (Error or already exists). def add(self, fields: dict): if not self._check_params(fields): return False, "Please fill out both dept and cnum" course = self.storage.get_course(dept=fields['dept'], cnum=fields['cnum']) if course is None: course = Course() course.dept = fields['dept'] course.cnum = fields['cnum'] # Unvalidated fields if 'name' in fields.keys() and fields['name'] is not None and len( fields['name'].strip()) > 0: course.name = fields['name'] if 'description' in fields.keys( ) and fields['description'] is not None and len( fields['description'].strip()) > 0: course.description = fields['description'] self.storage.insert_course(course) return True, "" return False, "Course already exists!" # Returns a list of matching courses. # ALWAYS returns a list, even if only one course. access by using list[0] # On multiple view, list of courses is sorted by dept THEN cnum eg CS240 is before MATH105 def view(self, fields: dict) -> [dict]: dept = None cnum = None retVal = [] if 'dept' in fields.keys() and fields['dept'] is not None and len( fields['dept'].strip()) > 0: dept = fields['dept'] if 'cnum' in fields.keys() and fields['cnum'] is not None and len( fields['cnum'].strip()) > 0: cnum = fields['cnum'] matchingcourses = [] if dept is not None and cnum is not None: matchingcourses = self.storage.get_courses_by(dept=dept, cnum=cnum) elif dept is not None: matchingcourses = self.storage.get_courses_by(dept=dept) elif cnum is not None: matchingcourses = self.storage.get_courses_by(cnum=cnum) else: matchingcourses = self.storage.get_courses_by() for course in matchingcourses: retFields = {} retFields['dept'] = course.dept retFields['cnum'] = course.cnum retFields['name'] = course.name retFields['description'] = course.description if 'nonrecursive' not in fields.keys(): retFields['sections'] = self.section_manager.view({ "dept": course.dept, "cnum": course.cnum, "nonrecursive": "true" }) else: retFields['sections'] = ['nonrecursive'] retVal.append(retFields) retVal.sort(key=lambda k: k['dept'] + k['cnum']) return retVal def delete(self, fields: dict): """Delete a specific course from the database""" # Check if required params are present and error check optional params if not self._check_params(fields): return False, "Please fill out both dept and cnum" # Store dict values into variables dept = fields.get('dept').upper() cnum = fields.get('cnum') # Retrieve courses with dept and cnum course_list = self.storage.get_courses_by(dept=dept, cnum=cnum) # Delete all courses retreived from database with given dept and cnum for c in course_list: if not self.storage.delete(c): return False, "Error Deleting Course" return True, "" # Edits a Course, returning true if successful def edit(self, fields: dict): if not self._check_params(fields): return False, "Please fill out both dept and cnum" course = self.storage.get_course(dept=fields['dept'], cnum=fields['cnum']) if course is not None: # Unvalidated fields if 'name' in fields.keys() and fields['name'] is not None and len( fields['name'].strip()) > 0: course.name = fields['name'] if 'description' in fields.keys( ) and fields['description'] is not None and len( fields['description'].strip()) > 0: course.description = fields['description'] self.storage.insert_course(course) return True, "" return False, "Course doesn't exist!" # Check for invalid parameters def _check_params(self, fields: dict): dept = fields.get('dept') cnum = fields.get('cnum') instructor = fields.get('instructor') if not dept: return False if not cnum: return False if not cnum.isdigit(): return False else: return True @staticmethod def reqFields() -> list: return ['dept', 'cnum'] @staticmethod def optFields() -> list: return ['name', 'description', 'snum', 'instructor']