Allow admins delete poll answer documents

spec/features/admin/poll/questions/answers/documents/documents_spec.rb

@@ -0,0 +1,44 @@
+require "rails_helper"
+
+feature "Documents" do
+
+  background do
+    admin = create(:administrator)
+    login_as(admin.user)
+  end
+
+  context "Index" do
+    scenario "Answer with no documents" do
+      answer = create(:poll_question_answer, question: create(:poll_question))
+      document = create(:document)
+
+      visit admin_answer_documents_path(answer)
+
+      expect(page).not_to have_content(document.title)
+    end
+
+    scenario "Answer with documents" do
+      answer = create(:poll_question_answer, question: create(:poll_question))
+      document = create(:document, documentable: answer)
+
+      visit admin_answer_documents_path(answer)
+
+      expect(page).to have_content(document.title)
+    end
+  end
+
+  scenario "Remove document from answer", :js do
+    answer = create(:poll_question_answer, question: create(:poll_question))
+    document = create(:document, documentable: answer)
+
+    visit admin_answer_documents_path(answer)
+    expect(page).to have_content(document.title)
+
+    accept_confirm "Are you sure?" do
+      click_link "Delete"
+    end
+
+    expect(page).not_to have_content(document.title)
+  end
+
+end