deadlock detected with capybara-webkit
This is happening because you have two threads, the test and the request, modifying the database asynchronously. It looks like you've rightly been experimenting with different configurations in your spec_helper. I've spend a fair amount of time struggling with this same issue, and have come up with this:
# adapted from https://gist.github.com/moonfly/4950750
require 'database_cleaner'
RSpec.configure do |config|
config.use_transactional_fixtures = false
config.before( :suite ) do
DatabaseCleaner.clean_with :truncation
DatabaseCleaner.strategy = :transaction
end
config.around( :each ) do |spec|
if spec.metadata[:js]
# JS => doesn't share connections => can't use transactions
spec.run
DatabaseCleaner.clean_with :deletion
else
# No JS/Devise => run with Rack::Test => transactions are ok
DatabaseCleaner.start
spec.run
DatabaseCleaner.clean
# see https://github.com/bmabey/database_cleaner/issues/99
begin
ActiveRecord::Base.connection.send :rollback_transaction_records, true
rescue
end
end
end
end
I keep it all in support/database_cleaner_configuration.rb, which would work for you, as well, or you can simply replace what you've got in your spec_helper. If this doesn't work, let me know - I have a few other ideas, but they're kookier, and not worth getting into if this works, which it probably will...
Note:
It might be worth mentioning that Rails 5.1+ solves the database problem. Eileen Uchitelle on the Rails team made the changes necessary to run ensure test threads and the Rails server can run in the same process by sharing the database connection.