Bring options factories from spree_core and merge with modification

spec/factories.rb

@@ -162,11 +162,6 @@ FactoryBot.define do
 end
 
 FactoryBot.modify do
-  factory :option_type do
-    # Prevent inconsistent ordering in specs when all option types have the same (0) position
-    sequence(:position)
-  end
-
   factory :stock_location, class: Spree::StockLocation do
     # keeps the test stock_location unique
     initialize_with { DefaultStockLocation.find_or_create }

spec/factories/options_factory.rb

@@ -0,0 +1,15 @@
+FactoryGirl.define do
+  factory :option_value, class: Spree::OptionValue do
+    name 'Size'
+    presentation 'S'
+    option_type
+  end
+
+  factory :option_type, class: Spree::OptionType do
+    name 'foo-size'
+    presentation 'Size'
+
+    # Prevent inconsistent ordering in specs when all option types have the same (0) position
+    sequence(:position)
+  end
+end