Add tests for rake task

lib/tasks/recalculate_invalid_reasonpref_dontknow.rake

@@ -0,0 +1,12 @@
+desc "Bulk update logs with invalid rp_dontknow values"
+task recalculate_invalid_rpdontknow: :environment do
+  validation_trigger_condition = "rp_dontknow = 1 AND (rp_homeless = 1 OR rp_insan_unsat = 1 OR rp_medwel = 1 OR rp_hardship = 1)"
+
+  LettingsLog.filter_by_year(2024).where(validation_trigger_condition).find_each do |log|
+    log.rp_dontknow = 0
+
+    unless log.save
+      Rails.logger.info "Could not save changes to lettings log #{log.id}"
+    end
+  end
+end

spec/lib/tasks/recalculate_invalid_reasonpref_dontknow_spec.rb

@@ -0,0 +1,60 @@
+require "rails_helper"
+require "rake"
+
+RSpec.describe "recalculate_invalid_reasonpref_dontknow" do
+  subject(:task) { Rake::Task["recalculate_invalid_rpdontknow"] }
+
+  before do
+    Rake.application.rake_require("tasks/recalculate_invalid_reasonpref_dontknow")
+    Rake::Task.define_task(:environment)
+    task.reenable
+  end
+
+  let(:invalid_logs) { create_list(:lettings_log, 5, :completed, reasonpref: 1, rp_dontknow: 1, rp_homeless: 1, rp_insan_unsat: rand(2), rp_medwel: rand(2), rp_hardship: rand(2)) }
+  let(:pre_2024_invalid_logs) do
+    create_list(:lettings_log, 5, :completed, reasonpref: 1, rp_dontknow: 1, rp_homeless: 1, rp_insan_unsat: rand(2), rp_medwel: rand(2), rp_hardship: rand(2)).each do |log|
+      log.startdate = Time.zone.local(rand(2021..2023), 4, 1)
+      log.save!(validate: false)
+    end
+  end
+  let(:valid_logs) { create_list(:lettings_log, 3, :completed, reasonpref: 1, rp_dontknow: 0, rp_homeless: 1, rp_insan_unsat: 1, rp_medwel: rand(2), rp_hardship: rand(2)) }
+
+  it "updates the right logs from 2024/25 with invalid rp_dontknow values" do
+    invalid_logs.each do |log|
+      expect(log.reasonpref).to eq(1)
+      expect(log.rp_dontknow).to eq(1)
+      expect(log.rp_homeless).to eq(1)
+    end
+    pre_2024_invalid_logs.each do |log|
+      expect(log.reasonpref).to eq(1)
+      expect(log.rp_dontknow).to eq(1)
+      expect(log.rp_homeless).to eq(1)
+    end
+    valid_logs.each do |log|
+      expect(log.reasonpref).to eq(1)
+      expect(log.rp_dontknow).to eq(0)
+      expect(log.rp_homeless).to eq(1)
+      expect(log.rp_insan_unsat).to eq(1)
+    end
+    task.invoke
+    invalid_logs.each do |log|
+      log.reload
+      expect(log.reasonpref).to eq(1)
+      expect(log.rp_dontknow).to eq(0)
+      expect(log.rp_homeless).to eq(1)
+    end
+    pre_2024_invalid_logs.each do |log|
+      log.reload
+      expect(log.reasonpref).to eq(1)
+      expect(log.rp_dontknow).to eq(1)
+      expect(log.rp_homeless).to eq(1)
+    end
+    valid_logs.each do |log|
+      log.reload
+      expect(log.reasonpref).to eq(1)
+      expect(log.rp_dontknow).to eq(0)
+      expect(log.rp_homeless).to eq(1)
+      expect(log.rp_insan_unsat).to eq(1)
+    end
+  end
+end