adapt tests for manually generating group order invoices for order

spec/integration/group_order_invoices_spec.rb

@@ -2,9 +2,10 @@ require_relative '../spec_helper'
 
 feature GroupOrderInvoice, js: true do
   let(:admin) { create :user, groups: [create(:workgroup, role_finance: true)] }
+  let(:user) { create :user, groups: [create(:ordergroup)] }
   let(:article) { create :article, unit_quantity: 1 }
   let(:order) { create :order, supplier: article.supplier, article_ids: [article.id], ends: Time.now } # need to ref article
-  let(:go) { create :group_order, order: order}
+  let(:go) { create :group_order, order: order, ordergroup: user.ordergroup}
   let(:oa) { order.order_articles.find_by_article_id(article.id) }
   let(:ftt) { create :financial_transaction_type }
   let(:goa) { create :group_order_article, group_order: go, order_article: oa }
@@ -42,10 +43,23 @@ feature GroupOrderInvoice, js: true do
     order.update!(state: 'closed')
     order.reload
     visit finance_order_index_path
+    expect(page).to have_selector(:link_or_button, I18n.t('activerecord.attributes.group_order_invoice.links.generate'))
     click_link_or_button I18n.t('activerecord.attributes.group_order_invoice.links.generate')
     expect(GroupOrderInvoice.all.count).to eq(1)
   end
     
+  it 'generates multiple Group Order Invoice for order when order is closed if tax_number is set' do
+    goa.update_quantities 2, 0
+    oa.update_results!
+    FoodsoftConfig[:contact][:tax_number] = 12_345_678
+    order.update!(state: 'closed')
+    order.reload
+    visit finance_order_index_path
+    expect(page).to have_selector(:link_or_button, I18n.t('activerecord.attributes.group_order_invoice.links.generate_with_date'))
+    click_link_or_button I18n.t('activerecord.attributes.group_order_invoice.links.generate_with_date')
+    expect(GroupOrderInvoice.all.count).to eq(1)
+  end
+
   it 'does not generate Group Order Invoice when order is closed if tax_number not set' do
     goa.update_quantities 2, 0
     oa.update_results!

spec/models/group_order_invoice_spec.rb

@@ -9,9 +9,8 @@ describe GroupOrderInvoice do
 
   describe 'erroneous group order invoice' do
     let(:goi) { create :group_order_invoice, group_order_id: group_order.id }
-
     it 'does not create group order invoice if tax_number not set' do
-      expect { goi }.to raise_error(ActiveRecord::RecordInvalid)
+      expect { goi }.to raise_error(ActiveRecord::RecordInvalid, /.*/)
     end
   end