E1848 Write unit tests for assignment team

For this progect, the goal is to wirte up unit tests for assignment_team.rb

Project Introduction

Background

assignment_team.rb is the child class of team.rb. It is used to handle multiple problems relates to team in the assignment. Its responsibilities can mainly fall in three categories: participant of the team, reviews of the team, and the operation for the whole team. For the participant, it can be used to decide if a participant is in a given team and view the members of the team or remove a member. For reviews, it deals with the problem that getting the reviews for the team, assign reviewer for the team and get if the team has been reviewed by a specific reviewers. For the whole team, we can delete the team or view the scores, etc. by using this class.

Motivation

Make sure assignment_team.rb provides all functions as expected is important for the whole system. It requires enough tests for all the functions and the edge cases may occur. However, there are not enough unit tests for this model in expertiza. The following tests are added to assignment_team.rb in this project. To make sure we can cover as many conditions as we can(the objective for this project is getting at least 90% coverage rate), we first design test cases. The following factors are taking into considerations: the expected functions for each method, the possible edge cases and the pre-conditions for each cases. Then we get the unit test plan and complete the test following test steps.

Memebers of Project

Jianshu Zhang

Wanjing Kuang

Wei Wu

Mentor

Zhewei Hu

File Involvement

1.app/models/assignment_team.rb

2.spec/models/assignment_team_spec.rb

3.spec/factories/factories.rb

Test Plan

1. two test cases for method "include?": When the team includes a given participant and When the team doesn't include a given participant

2. one test case for method "parent_model": It returns "Assignment" when the method is called.

3. two test cases for method "self.parent_model(id)": When it's given a correct id and When it's given an incorrect id.

4. one test case for method "fullname": When the participant has an full name.

5. one test case for method "review_map_type": It returns ReviewResponseMap when the method is called.

6. one test case for method "self.prototype": It returns an new instance of AssignmentTeam when the method is called.

7. two test cases for method "assign_reviewer(reviewer)": When the team has an assignment and When the assignment record can not be found.

8. one test case for method "reviewd_by?": When it gets correct reviewer and returns true as an result.

9. one test case for method " topic": When it returns the correct id.

10. three test cases for method "has_submissions?": When the team doesn't submit any file or link, when team submits a link instead of files and when the team submits some files.

11. two test cases for method "participants": When no participants in this team and When adding some participants and get all the participants.

12. one test case for method "add_participant": When adding an participant, it will return an instance of AssignmentParticipant.

13. two test cases for method " delete and destroy": Testing delete and destory.

14. one test case for method "get_first_member": Let a team have two members, the first assigned member is expected to be returned by this method.

15. two test cases for method "hyoerlinks": the current teams submitted hyperlinks and not submitted the hyperlinks

16.three test cases for method "submit_hyperlink": the hyperlink is empty, the hyperlink is not empty and it calls the method on NET::HTTP,the hyperlink is not empty and it raises error

17.three test cases for method "team": the participant is nil, the participant exists and the team user exists

18.two test cases for method "export_files": an exception is expected if team is not exist or a new exported file is expected.

Unit Tests

Unit Test Tool

Rspec

Unit Test File

expertiza/spec/models/assignment_team_spec.rb

Unit Test Steps

• Create unit test cases in the assignment_team_spec.rb

• run rspec spec/models/assignment_team_spec.rb under expertiza directory

• the rspec outputs the number of test cases that are passed and those that are failed.

Unit Test Cases

Testing include?

2 test cases are designed to test this method:

1. The team includes a given participant.

      let(:assignment_team) { build(:assignment_team, id: 1, parent_id: 1, name: "full name") }
      let(:participant1) { build(:participant, id: 2, user: user) }
      it "returns true" do
        allow(assignment_team).to receive(:add_participants).with(participant1)
        expect(assignment_team.includes?(participant1))
      end

2. The team doesn't include a given participant.

      let(:assignment_team) { build(:assignment_team, id: 1, parent_id: 1, name: "full name") }
      let(:participant1) { build(:participant, id: 2, user: user) }
      let(:participant2) { build(:participant, id: 3) }
      it "returns false" do
        allow(assignment_team).to receive(:add_participants).with(participant1)
        expect(assignment_team.includes?(participant2))
      end

Testing parent_model

1 test case is designed to test this method:

      it "returns Assignment as result" do
        expect(assignment_team.parent_model).to eq("Assignment")
      end

Testing self.parent_model(id)

2 test cases are designed to test this method:

1.When it's given a correct id.

      let(:assignment) { build(:assignment, id: 1) }
      it "returns an assignemt" do
        allow(Assignment).to receive(:find).with(1).and_return(assignment)
        expect(AssignmentTeam.parent_model(1)).to eq(assignment)
      end

2.When it's given an incorrect id.

      it "raises an exception" do
        expect { AssignmentTeam.parent_model 2 }.to raise_exception(ActiveRecord::RecordNotFound)
      end

Testing fullname

1 test case is designed to test this method:

      it "returns the full name of assignment team" do
        expect(assignment_team.fullname).to eq("full name")
      end

Testing review_map_type

1 test case is designed to test this method:

      it "returns ReviewResponseMap as result" do
        expect(assignment_team.review_map_type).to eq("ReviewResponseMap")
      end

Testing self.prototype

1 test cases is designed to test this method:

      it "returns an new instance of AssignmentTeam" do
        expect(AssignmentTeam.prototype).to be_instance_of(AssignmentTeam)
      end

Testing assign_reviewer(reviewer)

2 test cases are designed to test this method:

1. When the team has an assignment.

      let(:reviewer) { build(:participant, id: 1) }
      it "returns an instance of ReviewResponseMap" do
        expect(assignment_team.assign_reviewer(reviewer)).to be_instance_of(ReviewResponseMap)
      end

2. When the assignment record can not be found

      let(:assignment_team2) { build(:assignment_team, id: 2, parent_id: 2) }
      it "returns an exception" do
        expect { assignment_team2.assign_reviewer(reviewer) }.to raise_exception(ActiveRecord::RecordNotFound)
      end

Testing reviewd_by?

1 test case is designed to test this method:

      it "returns true" do
        allow(ReviewResponseMap).to receive(:where).\
          with('reviewee_id = ? && reviewer_id = ? && reviewed_object_id = ?', 1, 1, 1).and_return([review_response_map])
        expect(assignment_team.reviewed_by?(reviewer)).to be true
      end

Testing topic

1 test case is designed to test this method:

      let(:signed_up_team) { build(:signed_up_team, id: 1, team_id: 1, is_waitlisted: 0, topic_id: 1) }
      it "returns a topic id" do
        allow(SignedUpTeam).to receive(:find_by).with(team_id: 1, is_waitlisted: 0).and_return(signed_up_team)
        expect(assignment_team.topic).to eq(1)
      end

Testing has_submissions?

3 test cases are designed to test this method:

1.The team doesn't submit any file or link.

      let(:team2) { build(:assignment_team, id: 2, parent_id: 1, name: "team2", submitted_hyperlinks: "") }
      it "no file or no link" do
        expect(team2.has_submissions?).to eq(false)
      end

2.The team submits a link instead of files.

      let(:team1) { build(:assignment_team, id: 1, parent_id: 1, name: "team1", submitted_hyperlinks: "http://example.com") }
      it "submitted hyperlinks" do
        expect(team1.has_submissions?).to eq(true)
      end

3. The team submits some files. Stub is used to emulate the scenario that the team has submitted a file.

 
      it "returns true" do
        allow(team2).to receive(:submitted_files).and_return([double(:File)])
        expect(team2.has_submissions?).to be true
      end

Testing participants

1. No participants in this team

      it '#no participant' do
        expect(team1.participants).to eq([])
      end

2. add some participants and get all the participants

      let(:student1) { build(:student, id: 1, name: 'johns', fullname: 'johns franklin') }
      let(:student2) { build(:student, id: 2, name: 'kate', fullname: 'kate moss') }
      let(:par1) { build(:participant, id: 1, parent_id: 1, user_id: 1) }
      let(:par2) { build(:participant, id: 2, parent_id: 1, user_id: 2) }
      it '#1 participant' do
        allow(AssignmentTeam).to receive(:users).with(id: team1.id).and_return([student1,student2])
        expect(team1.participants).to eq([par1, par2])
      end

Testing add_participant

      it '#add participants' do
        expect(team1.add_participant(ass1.id, par1)).to be_instance_of(AssignmentParticipant)
      end

Testing the delete and destroy

      it '#delete' do
        expect(team1.delete).to be_instance_of(AssignmentTeam)
      end

      it '#destroy' do
        expect(team1.destroy).to be_instance_of(AssignmentTeam)
      end

Testing members

      it '#get_first_member' do
        allow(AssignmentTeam).to receive(:find_by).with(id: team1.id).and_return(team1)
        allow(team1).to receive(:participants).and_return([par1, par2])
        expect(AssignmentTeam.get_first_member(team1.id)).to eq(par1)
      end

Testing import and export

1. import a team to a non-existing assignment and expect an exception

     it '#import an nonexisting assignment id' do
        row = {teamname: "hello_world", teammembers: %w[johns kate]}
        options = {has_teamname: "true_first"}
        expect { AssignmentTeam.import(row, 99_999, options) }.to raise_error(ImportError)
      end

2. export teams into a csv file

      it '#export' do
        options = {}
        csv = CSV.open("assignment_team_export.csv", "w")
        assignment_id = ass1.id
        allow(AssignmentTeam).to receive(:where).with(parent_id: assignment_id).and_return([team1, team2, team3])
        allow(TeamsUser).to receive(:where).and_return([par1, par2])
        expect(AssignmentTeam.export(csv, assignment_id, options)).to be_instance_of(CSV)
      end

Testing copy

      it '#copy' do
        allow(TeamsUser).to receive(:where).with(team_id: team1.id).and_return([par1])
        expect(team1.copy(course1.id)).to eq([par1])
      end

Testing hyperlinks

2 test cases are designed to test this method:

1. when the current teams submitted hyperlinks

      let(:assignment_team) { build(:assignment_team) }
      context "when current teams submitted hyperlinks" do
        it "returns the hyperlinks submitted by the team" do
          expect(assignment_team.hyperlinks).to eq(["https://www.expertiza.ncsu.edu"])
        end
       end

2. when current teams did not submit hyperlinks

     let(:team_without_submitted_hyperlinks) { build(:assignment_team, submitted_hyperlinks: "") }
     context "when current teams did not submit hyperlinks" do
       it "returns an empty array" do
         expect(team_without_submitted_hyperlinks.hyperlinks).to eq([])
       end
      end

Testing files

     before :each do
       @directory = "a"
       @files = ["b.txt", "c.java", "d.txt"]
       @files1 = ["b/c", "d/e"]
      end
      it "call the method in Dir" do
        expect(Dir).to receive(:[]).with(@directory + "/*").and_return(@files)
        assignment_team.files(@directory)
      end

Testing submit_hyperlink

3 test cases are designed to test this method:

1. when the hyperlink is empty

     context "when the hyperlink is empty" do
      it "raise excpetion" do
        expect{(assignment_team.submit_hyperlink(""))}.to raise_error('The hyperlink cannot be empty!')
      end

2. when the hyperlink is not empty and it calls the method on NET::HTTP

      before :each do
        @link = "htp.aa/.."
      end
      it "call the method on NET::HTTP" do
         expect(Net::HTTP).to receive(:get_response).with(URI(@link+'http://'))
         assignment_team.submit_hyperlink(@link)
      end

3. when the hyperlink is not empty and it raises error

      it "raise error" do
          allow(Net::HTTP).to receive(:get_response).with(URI(@link+'http://')).and_return("402")
          expect{(assignment_team.submit_hyperlink(@link))}.to raise_error('HTTP status code: 402')
       end

Testing remove_hyperlink

      before :each do
        @hyperlink = "http://a.com"
      end
     it 'call the hyperlinks method' do
        expect(assignment_team).to receive(:hyperlinks).and_return(["https://www.expertiza.ncsu.edu"])
        assignment_team.remove_hyperlink(@hyperlink)
      end

Testing team

3 test cases are designed to test this method

1. when the participant is nil then this method will return nil

      context 'when the participant is nil then this method will return nil' do
        it 'the participant is nil' do
          expect(AssignmentTeam.team(nil)).to eq(nil)
        end
       end

2. when it can find the participant

      let(:participant) { build(:participant) }
      context 'can find the participant' do
        it 'send the correct user_id to the TeamsUser.where method' do
          expect(TeamsUser).to receive(:where).with(user_id: participant.user_id).and_return([team_user])
          AssignmentTeam.team(participant)
        end

3. when the team user exists

      let(:team_user) { build(:team_user) }
      context 'the team user exists' do
        before :each do
          allow(TeamsUser).to receive(:where).with(user_id: 1).and_return([team_user])
          AssignmentTeam.team(participant)
       end

Testing export_fields

2 test cases are designed to test this method

1. when the team_name equals false

      it 'the team_name equals false' do
        options = {:team_name =>"false"}
        expect(AssignmentTeam.export_fields(options)).to eq(["Team Name", "Team members","Assignment Name"])
      end

2. when the team_name equals true

      it 'the team_name equals true' do
        options = {:team_name =>"true"}
        expect(AssignmentTeam.export_fields(options)).to eq(["Team Name", "Assignment Name"])
      end

Testing remove_team_by_id

      it 'send find to Assignment' do
        expect(AssignmentTeam).to receive(:find).with(1)
        AssignmentTeam.remove_team_by_id(1)
      end

Testing path

      it 'can get the path' do
        expect(assignment_team.path).to eq(Rails.root.to_s+'/pg_data/instructor6/csc517/test/final_test/0')
        assignment_team.path
      end

Testing set_student_directory_num

3 test cases are designed to test this method

1. when directory_num >= 0

     context 'directory_num >= 0' do
       it 'return when num>=0' do
         expect(assignment_team.set_student_directory_num).to eq(nil)
       end
     end

2. when the directory_num does not exist and it gets max num

     let(:assignment_team1) {build(:assignment_team, directory_num: nil)}
     it 'get max num' do
        expect(AssignmentTeam).to receive_message_chain(:where,:order,:first,:directory_num).with(parent_id:       assignment_team1.parent_id).with('directory_num desc').with(no_args).with(no_args).and_return(1)
        assignment_team1.set_student_directory_num
      end

3. when the directory_num does not exist and it updates attribute

      it 'update attribute' do
        allow(AssignmentTeam).to receive_message_chain(:where,:order,:first,:directory_num).with(parent_id: assignment_team1.parent_id).with('directory_num desc').with(no_args).with(no_args).and_return(1)
        expect(assignment_team1).to receive(:update_attributes).with(directory_num: 2)
        assignment_team1.set_student_directory_num
      end

Testing received_any_peer_review?

      it 'send the request to where of the ResponseMap' do
        expect(ResponseMap).to receive(:where).with(reviewee_id: assignment_team.id, reviewed_object_id: assignment_team.parent_id).and_return([])
        assignment_team.received_any_peer_review?
    end

Test Coverage

There is screenshot of the coverage page. [1]