Add test case for adding budget poll results

While writing the test, we noticed it didn't work because the labels
weren't correctly generated, so we're fixing them as well.

app/views/officing/ballot_sheets/new.html.erb

@@ -2,12 +2,12 @@
   <h2><%= t("officing.poll_budgets.new.title", poll_budget: @poll.name) %></h2>
 
   <%= form_tag(officing_poll_ballot_sheets_path(@poll)) do %>
-    <label><%= t("officing.poll_budgets.new.booth") %></label>
+    <%= label_tag :officer_assignment_id, t("officing.poll_budgets.new.booth") %>
     <%= select_tag :officer_assignment_id,
                     booths_for_officer_select_options(@officer_assignments),
                     { prompt: t("officing.poll_budgets.new.select_booth") } %>
 
-    <label><%= t("officing.poll_budgets.new.csv_data") %></label>
+    <%= label_tag :data, t("officing.poll_budgets.new.csv_data") %>
     <%= text_area_tag :data, nil, rows: 10 %>
 
     <%= submit_tag t("officing.poll_budgets.new.submit"), class: "button" %>

spec/system/officing/ballot_sheets_spec.rb

@@ -0,0 +1,46 @@
+require "rails_helper"
+
+describe "Officing ballot sheets" do
+  let(:budget) { create(:budget, :reviewing_ballots) }
+  let(:heading) { create(:budget_heading, budget: budget, price: 300) }
+  let(:poll) { create(:poll, name: "Latest budget poll", budget: budget, ends_at: Date.current) }
+  let(:booth) { create(:poll_booth, name: "The only booth") }
+  let(:officer) { create(:poll_officer) }
+  let!(:admin) { create(:administrator).user }
+
+  scenario "Create a ballot sheet for a budget poll" do
+    create(:poll_officer_assignment, officer: officer, poll: poll, booth: booth)
+    create(:poll_shift, :recount_scrutiny_task, officer: officer, booth: booth, date: Date.current)
+
+    titles = %w[First Second Third Fourth]
+    investments = 4.times.map do |n|
+      create(:budget_investment, :selected, title: titles[n], heading: heading, price: 100)
+    end
+
+    login_as(officer.user)
+    visit officing_root_path
+    click_link "Total recounts and results"
+    within("tr", text: "Latest budget poll") { click_link "Add results" }
+
+    select "The only booth", from: "Booth"
+    fill_in "CSV data", with: "#{investments[0..1].map(&:id).join(",")};#{investments[1..2].map(&:id).join(",")}"
+    click_button "Save"
+
+    expect(page).to have_content "Creation date"
+    expect(page).to have_content "CSV data"
+
+    logout
+    login_as(admin)
+    visit admin_budget_path(budget)
+    click_button "Calculate Winner Investments"
+
+    expect(page).to have_content "Winners being calculated"
+
+    visit budget_results_path(budget)
+
+    within("tr", text: "Second") { expect(page).to have_content("2") }
+    within("tr", text: "First") { expect(page).to have_content("1") }
+    within("tr", text: "Third") { expect(page).to have_content("1") }
+    expect(page).not_to have_content "Fourth"
+  end
+end