Fixes and add label to tables

spec/controllers/dashboard_controller_spec.rb

@@ -0,0 +1,21 @@
+# encoding: UTF-8
+require 'rails_helper'
+describe DashboardController, type: :controller do
+  before :each do
+    setup_supplier_for_controller
+  end
+
+  describe "GET #table_qr_image" do
+    it "does render the svg image" do
+      table = create :table, supplier: @supplier, number: 7
+      get :table_qr_image, params: {table_id: table.id}, format: :svg
+      expect(response.body).to include %[id="tspan3801">7</tspan>]
+    end
+
+    it "does render the svg image with table label if present" do
+      table = create :table, supplier: @supplier, number: 7, label: "The love seat"
+      get :table_qr_image, params: {table_id: table.id}, format: :svg
+      expect(response.body).to include %[id="tspan3801">7 - The love seat</tspan>]
+    end
+  end
+end