Product Import basic specs

spec/models/product_importer_spec.rb

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+require 'spec_helper'
+require 'open_food_network/permissions'
+
+describe ProductImporter do
+  include AuthenticationWorkflow
+
+  let!(:admin) { create(:admin_user) }
+  let!(:user) { create_enterprise_user }
+  let!(:enterprise) { create(:enterprise, owner: user, name: "Test Enterprise") }
+  let!(:category) { create(:taxon, name: 'Vegetables') }
+  let(:permissions) { OpenFoodNetwork::Permissions.new(user) }
+
+  describe "importing products from a spreadsheet" do
+    after { File.delete('/tmp/test-m.csv') }
+
+    it "validates the entries" do
+      csv_data = CSV.generate do |csv|
+        csv << ["name", "supplier", "category", "on_hand", "price", "unit_value", "variant_unit", "variant_unit_scale"]
+        csv << ["Carrots", "Test Enterprise", "Vegetables", "5", "3.20", "500", "weight", "1"]
+        csv << ["Potatoes", "Test Enterprise", "Vegetables", "6", "6.50", "1000", "weight", "1000"]
+      end
+      File.write('/tmp/test-m.csv', csv_data)
+      file = File.new('/tmp/test-m.csv')
+
+      importer = ProductImporter.new(file, permissions.editable_enterprises)
+
+      expect(importer.valid_count).to eq(2)
+      expect(importer.invalid_count).to eq(0)
+    end
+  end
+
+  # Test handling of filetypes
+end