Reset errors if a log gets successfully updated (#459)

* reset errors if a log gets successfully updated

* Add test

app/controllers/form_controller.rb

@@ -8,6 +8,7 @@ class FormController < ApplicationController
       @page = @case_log.form.get_page(params[:case_log][:page])
       responses_for_page = responses_for_page(@page)
       if @case_log.update(responses_for_page)
+        session[:errors] = nil
         if is_referrer_check_answers? && !@case_log.form.next_page(@page, @case_log).to_s.include?("value_check")
           redirect_to(send("case_log_#{@case_log.form.subsection_for_page(@page).id}_check_answers_path", @case_log))
         elsif @case_log.form.is_last_question?(@page, @case_log.form.subsection_for_page(@page), @case_log)

spec/requests/form_controller_spec.rb

@@ -120,16 +120,35 @@ RSpec.describe FormController, type: :request do
             },
           }
         end
+        let(:valid_params) do
+          {
+            id: case_log.id,
+            case_log: {
+              page: page_id,
+              age1: valid_answer,
+            },
+          }
+        end
 
         before do
           post "/logs/#{case_log.id}/form", params: params
         end
 
         context "with invalid answers" do
+          let(:page) { Capybara::Node::Simple.new(response.body) }
           let(:answer) { 2000 }
+          let(:valid_answer) { 20 }
 
           it "re-renders the same page with errors if validation fails" do
             expect(response).to redirect_to("/logs/#{case_log.id}/#{page_id.dasherize}")
+            follow_redirect!
+            expect(page).to have_content("There is a problem")
+          end
+
+          it "resets errors when fixed" do
+            post "/logs/#{case_log.id}/form", params: valid_params
+            get "/logs/#{case_log.id}/#{page_id.dasherize}"
+            expect(page).not_to have_content("There is a problem")
           end
         end