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sqm-dashboards/spec/models/scale_spec.rb

74 lines
2.8 KiB

require 'rails_helper'
RSpec.describe Scale, type: :model do
let(:school) { create(:school) }
let(:academic_year) { create(:academic_year) }
let(:scale) { create(:scale) }
describe '.score' do
let(:teacher_survey_item_1) { create(:teacher_survey_item, scale:) }
let(:teacher_survey_item_2) { create(:teacher_survey_item, scale:) }
let(:teacher_survey_item_3) { create(:teacher_survey_item, scale:) }
let(:student_survey_item_1) { create(:student_survey_item, scale:) }
context 'when only teacher survey items exist' do
before :each do
create(:survey_item_response,
survey_item: teacher_survey_item_1, academic_year:, school:, likert_score: 3)
create(:survey_item_response,
survey_item: teacher_survey_item_2, academic_year:, school:, likert_score: 4)
create(:survey_item_response,
survey_item: teacher_survey_item_3, academic_year:, school:, likert_score: 5)
end
it 'returns the average of the likert scores of the survey items' do
expect(scale.score(school:, academic_year:)).to eq 4
end
context 'when other scales exist' do
before :each do
create(:survey_item_response,
academic_year:, school:, likert_score: 1)
create(:survey_item_response,
academic_year:, school:, likert_score: 1)
create(:survey_item_response,
academic_year:, school:, likert_score: 1)
end
it 'does not affect the score for the original scale' do
expect(scale.score(school:, academic_year:)).to eq 4
end
end
end
context 'when both teacher and student survey items exist' do
before :each do
create(:survey_item_response,
survey_item: teacher_survey_item_1, academic_year:, school:, likert_score: 3)
create(:survey_item_response,
survey_item: teacher_survey_item_2, academic_year:, school:, likert_score: 4)
create(:survey_item_response,
survey_item: teacher_survey_item_3, academic_year:, school:, likert_score: 5)
end
context 'but no survey item responses are linked to student survey items' do
before :each do
student_survey_item_1
end
it 'returns a score that only averages teacher survey items' do
expect(scale.score(school:, academic_year:)).to eq 4
end
end
context 'and some survey item responses exist for a student survey item' do
before :each do
create(:survey_item_response,
survey_item: student_survey_item_1, academic_year:, school:, likert_score: 2)
end
it 'returns a score that gives equal weight to student and teacher survey items' do
expect(scale.score(school:, academic_year:)).to eq 3
end
end
end
end
end