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Raise an error if `sequence` is defined for attribute with auto-incrementing sequence in the DB
This feature request came from https://github.com/rubocop/rubocop-factory_bot/pull/52 which has an example reproduction of the problem.
Problem this feature will solve
E.g. with a simple factory:
factory :post do
sequence :id
end
where the post table's id
is backed by a DB sequence, it is quite easy for the FactoryBot sequence
to get out of sync with the DB sequence and cause duplicate errors, for example with:
FactoryBot.create(:post)
Post.create!
FactoryBot.create(:post)
the second FactoryBot.create
will error due to a duplicate id
value in the DB.
Desired solution
Disallow defining a sequence
for an attribute that is backed by an auto-incrementing sequence in the database.
Alternatives considered
Perhaps the RuboCop check is sufficient, and implementing the check/error in FactoryBot is not possible or deemed worth the effort?