public void testDuplicatedUser() {
RegisterStore page = new RegisterStore();
String nitAlmacen = "4567" + new Random().nextInt();
String storeName = "Flamingo";
page.fillForm(nitAlmacen, storeName);
page.submit();
page.close();
page = new RegisterStore();
page.fillForm(nitAlmacen, storeName);
page.submit();