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class ResponseRate
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def initialize(subcategory:, school:, academic_year:)
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@subcategory = subcategory
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@school = school
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@academic_year = academic_year
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end
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def student
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@student_response_rate ||= begin
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return 0 unless student_survey_item_count.positive?
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average_responses_per_survey_item = student_response_count / student_survey_item_count
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return 0 unless total_possible_student_responses.positive?
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(average_responses_per_survey_item / total_possible_student_responses * 100).round
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end
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end
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def teacher
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@teacher_response_rate ||= begin
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return 0 unless teacher_survey_item_count.positive?
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average_responses_per_survey_item = teacher_response_count / teacher_survey_item_count
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return 0 unless total_possible_teacher_responses.positive?
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(average_responses_per_survey_item / total_possible_teacher_responses * 100).round
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end
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end
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private
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def total_possible_student_responses
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@total_possible_student_responses ||= total_possible_responses do |responses|
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responses.total_students
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end
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end
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def total_possible_teacher_responses
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@total_possible_teacher_responses ||= total_possible_responses do |responses|
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responses.total_teachers
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end
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end
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def total_possible_responses
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total_responses = Respondent.where(school: @school, academic_year: @academic_year).first
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return 0 unless total_responses.present?
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yield total_responses
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end
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def student_response_count
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@student_response_count ||= response_count do |measure|
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next 0 unless measure.includes_student_survey_items?
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SurveyItemResponse.student_responses_for_measure(measure, @school, @academic_year).count
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end
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end
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def teacher_response_count
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@teacher_response_count ||= response_count do |measure|
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next 0 unless measure.includes_teacher_survey_items?
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SurveyItemResponse.teacher_responses_for_measure(measure, @school, @academic_year).count
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end
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end
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def response_count(&block)
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@subcategory.measures.map(&block).sum
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end
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def student_survey_item_count
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@student_survey_item_count ||= survey_item_count do |measure|
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measure.student_survey_items.count
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end
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end
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def teacher_survey_item_count
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@teacher_survey_item_count ||= survey_item_count do |measure|
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measure.teacher_survey_items.count
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end
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end
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def survey_item_count(&block)
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@subcategory.measures.map(&block).sum
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end
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end
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@ -0,0 +1,76 @@
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require 'rails_helper'
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describe ResponseRate, type: :model do
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let(:school) { create(:school) }
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let(:ay) { create(:academic_year) }
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let(:survey_respondents) do
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create(:respondent, school: school, total_students: SurveyItemResponse::STUDENT_RESPONSE_THRESHOLD,
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total_teachers: SurveyItemResponse::TEACHER_RESPONSE_THRESHOLD, academic_year: ay)
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end
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describe '.student' do
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let(:subcategory) { create(:subcategory) }
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let(:sufficient_measure_1) { create(:measure, subcategory: subcategory) }
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let(:sufficient_measure_2) { create(:measure, subcategory: subcategory) }
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let(:insufficient_measure) { create(:measure, subcategory: subcategory) }
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let(:sufficient_teacher_survey_item) { create(:teacher_survey_item, measure: sufficient_measure_1) }
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let(:sufficient_student_survey_item_1) { create(:student_survey_item, measure: sufficient_measure_1) }
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let(:insufficient_teacher_survey_item) { create(:teacher_survey_item, measure: insufficient_measure) }
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let(:sufficient_student_survey_item_2) { create(:student_survey_item, measure: sufficient_measure_2) }
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let(:insufficient_student_survey_item) { create(:student_survey_item, measure: insufficient_measure) }
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before :each do
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survey_respondents
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create_list(:survey_item_response, SurveyItemResponse::TEACHER_RESPONSE_THRESHOLD, survey_item: sufficient_teacher_survey_item,
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academic_year: ay, school: school, likert_score: 1)
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create_list(:survey_item_response, SurveyItemResponse::STUDENT_RESPONSE_THRESHOLD, survey_item: sufficient_student_survey_item_1,
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academic_year: ay, school: school, likert_score: 4)
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create_list(:survey_item_response, SurveyItemResponse::STUDENT_RESPONSE_THRESHOLD + 1, survey_item: sufficient_student_survey_item_2,
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academic_year: ay, school: school, likert_score: 4)
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create_list(:survey_item_response, SurveyItemResponse::TEACHER_RESPONSE_THRESHOLD - 1,
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survey_item: insufficient_teacher_survey_item, academic_year: ay, school: school, likert_score: 1)
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create_list(:survey_item_response, SurveyItemResponse::STUDENT_RESPONSE_THRESHOLD - 1,
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survey_item: insufficient_student_survey_item, academic_year: ay, school: school, likert_score: 1)
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end
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context 'when the average number of student responses per question in a subcategory is equal to the student response threshold' do
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it 'returns 100 percent' do
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expect(ResponseRate.new(subcategory: subcategory, school: school,
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academic_year: ay).student).to eq 100
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end
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end
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end
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describe '.teacher' do
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let(:subcategory) { create(:subcategory) }
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let(:sufficient_measure_1) { create(:measure, subcategory: subcategory) }
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let(:sufficient_measure_2) { create(:measure, subcategory: subcategory) }
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let(:insufficient_measure) { create(:measure, subcategory: subcategory) }
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let(:sufficient_teacher_survey_item_1) { create(:teacher_survey_item, measure: sufficient_measure_1) }
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let(:sufficient_teacher_survey_item_2) { create(:teacher_survey_item, measure: sufficient_measure_1) }
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let(:sufficient_student_survey_item_1) { create(:student_survey_item, measure: sufficient_measure_1) }
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let(:insufficient_teacher_survey_item) { create(:teacher_survey_item, measure: insufficient_measure) }
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let(:insufficient_student_survey_item) { create(:student_survey_item, measure: insufficient_measure) }
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before :each do
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survey_respondents
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create_list(:survey_item_response, SurveyItemResponse::TEACHER_RESPONSE_THRESHOLD, survey_item: sufficient_teacher_survey_item_1,
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academic_year: ay, school: school, likert_score: 1)
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create_list(:survey_item_response, SurveyItemResponse::TEACHER_RESPONSE_THRESHOLD + 1, survey_item: sufficient_teacher_survey_item_2,
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academic_year: ay, school: school, likert_score: 1)
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create_list(:survey_item_response, SurveyItemResponse::STUDENT_RESPONSE_THRESHOLD, survey_item: sufficient_student_survey_item_1,
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academic_year: ay, school: school, likert_score: 4)
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create_list(:survey_item_response, SurveyItemResponse::TEACHER_RESPONSE_THRESHOLD - 1,
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survey_item: insufficient_teacher_survey_item, academic_year: ay, school: school, likert_score: 1)
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create_list(:survey_item_response, SurveyItemResponse::STUDENT_RESPONSE_THRESHOLD - 1,
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survey_item: insufficient_student_survey_item, academic_year: ay, school: school, likert_score: 1)
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end
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context 'when the average number of student responses per question in a subcategory is equal to the student response threshold' do
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it 'returns 100 percent' do
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expect(ResponseRate.new(subcategory: subcategory, school: school,
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academic_year: ay).teacher).to eq 100
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end
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end
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end
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end
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Loading…
Reference in new issue