Add subcategory report

spec/models/report/subcategory_spec.rb

@@ -3,10 +3,12 @@ RSpec.describe Report::Subcategory, type: :model do
   let(:school) { create(:school, name: 'Milford High', slug: 'milford-high') }
   let(:academic_year) { create(:academic_year, range: '2018-2019') }
   let(:subcategory) { create(:subcategory, subcategory_id: '1A') }
+  let(:respondent) { create(:respondent, school:, academic_year:) }
   before :each do
     school
     academic_year
     subcategory
+    respondent
   end
   let(:measure) { create(:measure, subcategory:) }
   let(:scale) { create(:scale, measure:) }
@@ -32,4 +34,58 @@ RSpec.describe Report::Subcategory, type: :model do
       expect(subcategory_id).to eq('1A')
     end
   end
+  describe '.create_report' do
+    before do
+      allow(Report::Subcategory).to receive(:write_csv)
+    end
+
+    it 'generates a CSV report' do
+      expect(FileUtils).to receive(:mkdir_p).with(Rails.root.join('tmp', 'reports'))
+
+      Report::Subcategory.create_report
+
+      expect(Report::Subcategory).to have_received(:write_csv)
+    end
+
+    it 'returns the report data' do
+      data = Report::Subcategory.create_report
+
+      expect(data).to be_an(Array)
+    end
+  end
+  describe '.write_csv' do
+    it 'writes the data to a CSV file' do
+      data = [['School', 'Academic Year', 'Subcategory'], ['School A', '2022-2023', 'Category A']]
+      filepath = Rails.root.join('tmp', 'spec', 'reports', 'subcategories.csv')
+
+      FileUtils.mkdir_p Rails.root.join('tmp', 'spec', 'reports')
+      Report::Subcategory.write_csv(data:, filepath:)
+
+      csv_data = File.read(filepath)
+      expect(csv_data).to include('School,Academic Year,Subcategory')
+      expect(csv_data).to include('School A,2022-2023,Category A')
+    end
+  end
+
+  describe '.student_score' do
+    let(:response_rate) { create(:response_rate, subcategory:, school:, academic_year:) }
+    let(:row) { [response_rate, subcategory, school, academic_year] }
+
+    it 'returns student score if response rate meets student threshold' do
+      allow(subcategory).to receive(:student_score).and_return(80)
+      allow(response_rate).to receive(:meets_student_threshold?).and_return(true)
+
+      score = Report::Subcategory.student_score(row:)
+
+      expect(score).to eq(80)
+    end
+
+    it 'returns "N/A" if response rate does not meet student threshold' do
+      allow(response_rate).to receive(:meets_student_threshold?).and_return(false)
+
+      score = Report::Subcategory.student_score(row:)
+
+      expect(score).to eq('N/A')
+    end
+  end
 end