CSC/ECE 517 Fall 2016/E1642. Refactor review response map.rb

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Contents

Introduction

Background

Expertiza is an open source project based on Ruby on Rails framework. It is essentially an educational tool that allows an instructor to create and modify assignments, add topics to assignments, grade students,create evaluation rubrics, etc. Students use Expertiza for submission of their assignments, forming teams, reviewing other students, choosing topics etc. Expertiza also has a bidding feature where students can bid for different topics for an assignment and then it assigns topics to students depending on their priorities and also automatically forms teams.

Problem Statement

Following are the tasks which need to be completed as a part of our project.


Files Modified in this Project

Solutions implemented and Delivered

P1:

We could find a call to the import method from 4 relevant places in the importFile method in the ImportFileController. Of them 2 are for different models and the other 2 are having different number of parameters. Therefore we concluded that the import method in the review_response_map.rb is not called from anywhere and so we dropped the method.

P2:

We do not need a separate private variable for Team_id as we can directly use Team.id for the same.

Get_assessments_round_for refactoring examples

P3:

There is no need for the inner iteration as for every review for a particular round, there is only one metareview. The second iteration was redundant hence is removed.

Second Iteration Removed

P4:

Assignment Branch Condition size for final_versions_from_reviewer is too high:

This function returns a map containing the final versions of a reviewer. The function has duplicate code for scenario with varying rubric and non varying rubric. We moved this code into a new function with method name prepare_review_response. As we removed the duplicate code, this will reduce the Assignment Branch Condition size.

Assignments section refactoring examples(code in the red is the "before" version and green is "after" editing version)


P6:

find_by method can be used instead of where.first. Although here it wasn't used since the lines of code that used where.first were redundant and were removed to solve other problems. But its application can found on this page http://api.rubyonrails.org/classes/ActiveRecord/FinderMethods.html#method-i-find_by

P7:

Over long lines can be hard to read in a small screen. Hence proper use of refactoring the lines can save the overhead of reading and understanding long lines of code. In this problem we have wrapped the overlong lines. In an IDE such as RubyMine we can use custom methods such as "Use Soft Wraps in editor" to ease the process.


P8:

There were no tests present for review_response_map. New unit tests were added to test the functionalities and the test coverage result shows that the coverage is now 71.43 %

New Added Code

require 'rails_helper'
describe 'ReviewResponseMap' do
 before(:each) do
   create(:participant)
   @assignment_questionnaire= create(:assignment_questionnaire)
   @review_response=create(:review_response_map)
 end
 describe "#validity" do
   it "should have a reviewee_id, reviewed_object_id" do
     expect(@review_response.reviewee_id).to be_instance_of(Fixnum)
     expect(@review_response.reviewed_object_id).to be_instance_of(Fixnum)
   end
   it "should return the questionnaire" do
     review_questionnaire=@review_response.questionnaire 1
     expect(review_questionnaire).to be_instance_of(ReviewQuestionnaire)
     expect(review_questionnaire.id).to be(1)
   end
   it "should return title" do
     expect(@review_response.get_title).to eql "Review"
   end
   it "should return export_fields" do
     export_fields=ReviewResponseMap.export_fields nil
     expect(export_fields.length).to be(2)
   end
 end
 describe "#final_versions_from_reviewer method" do
   #reviewer giver three reviews, result must have final review
   it "should return final version of review  when assignment has non varying rubric" do
     create(:response_1)
     create(:response_1)
     create(:response_1)
     map=ReviewResponseMap.final_versions_from_reviewer(1)
     expect(map).to be_truthy
     expect(map[:review][:questionnaire_id]).to be(1)
     expect(map[:review][:response_ids].length).to be(1)
     expect(map[:review][:response_ids][0]).to be(3)
   end
   
#reviewer giver two reviews, result must have final review
   it "should return final version of review when assignment has varying rubric" do
     @assignment_questionnaire2= create(:assignment_questionnaire)
     @assignment_questionnaire.update(used_in_round:1)
     @assignment_questionnaire2.update(used_in_round:2)
     create(:response_1)
     create(:response_1)
     map=ReviewResponseMap.final_versions_from_reviewer(1)
     expect(map).to be_truthy
     expect(map["review round1".to_sym][:questionnaire_id]).to be(1)
     expect(map["review round1".to_sym][:response_ids].length).to be(1)
     expect(map["review round1".to_sym][:response_ids][0]).to be(2)
   end
 end


 describe "#get_responses_for_team_round method" do
#There are 2 reviewers for a team and both have given their reviews for round 1
   it "should return correct number of reponses per round for a team" do
     @review1 = create(:response_1)
     @review2 = create(:response_1)
     @responsemap2= create(:response_map_review)
     @review2.update(response_map: @responsemap2 )
     @team = build(:assignment_team)
     @team.id=1
     expect(ReviewResponseMap.get_responses_for_team_round(@team,1).size).to eq(2)
   end
#There are 2 reviewers for a team but one reviewer has given review for round1 and another one for round2
   it "should return only those reponses which are related to a particular round" do
     @review1 = create(:response_1)
     @review2 = create(:response_1)
     @responsemap2= create(:response_map_review)
     @review2.update(response_map: @responsemap2 )
     @review2.update(round: 2)
     @team = build(:assignment_team)
     @team.id=1
     expect(ReviewResponseMap.get_responses_for_team_round(@team,1).size).to eq(1)
   end
 end
 describe "#Test for the metareview_response_maps method" do
# There is 1 metareview each for the reviews given by a particular reviewer in round 1 and round 2
   it "should return correct number of metareviews for a particular reviewer" do
     @review1 = create(:response_1)
     @metareview1=create(:response_map_metareview)
     @metareview1.update(reviewed_object_id: @review1.id)
     @review2 = create(:response_1)
     @review2.update(round: 2)
     @metareview2=create(:response_map_metareview)
     @metareview2.update(reviewed_object_id: @review2.id)
     @response_map=@review1.response_map
     expect(@response_map.metareview_response_maps.size).to eq(2)
   end
 end
end

Testing

New Test Cases were created and the test coverage results are as shown.

Test coverage increased to 71.43% from 0

UI Testing

P2 UI TESTING

This functionality is used for viewing assignment scores for different teams and a detailed analysis for the same.

In order to test from UI follow the steps:

P4 UI TESTING

This functionality is used to check the final review summary of a assignment

In order to test from UI follow the steps:

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