Specs are long to run because of truncation of tables - ruby-on-rails

Question

I have a Rails 4 app with simple specs. When I run a spec, it takes 26 seconds. If I look at the log, I can see this :
(38.5ms) ALTER TABLE "schema_migrations" DISABLE TRIGGER ALL;ALTER TABLE .............# tons of tables
(10.3ms) SELECT schemaname || '.' || tablename
FROM pg_tables
WHERE
tablename !~ '_prt_' AND
tablename <> 'schema_migrations' AND
schemaname = ANY (current_schemas(false))
(2.3ms) select table_name from information_schema.views where table_schema = 'lap-test'
(10708.2ms) TRUNCATE TABLE "public"."bounded_facets_service_boutiques", "public"."versions", ..... # Tons of tables
(10823.0ms) TRUNCATE TABLE "public"."bounded_facets_service_boutiques", "public"."versions", .... #Tons of tables
(26.2ms) ALTER TABLE "schema_migrations" ENABLE TRIGGER ALL;ALTER TABLE "bounded_facets_service_boutiques" ENABLE TRIGGER ALL;ALTER TABLE "versions" .... #Tons of tables
(0.6ms) BEGIN
(0.3ms) COMMIT
(0.2ms) BEGIN
(0.2ms) SAVEPOINT active_record_1
(0.2ms) RELEASE SAVEPOINT active_record_1
(0.2ms) SAVEPOINT active_record_1
(0.5ms) SAVEPOINT active_record_2
Administrator Exists (1.9ms) SELECT 1 AS one FROM "administrators" WHERE "administrators"."email" = 'person1#labandprocess.com' LIMIT 1
SQL (2.3ms) INSERT INTO "administrators" .....
(0.6ms) RELEASE SAVEPOINT active_record_2
(0.4ms) ROLLBACK TO SAVEPOINT active_record_1
(0.6ms) ROLLBACK
As you can see, The truncation takes 10 seconds 2 times.
I use database cleaner with this :
RSpec.configure do |config|
config.include Devise::TestHelpers, type: :controller
config.before(:suite) do
DatabaseCleaner.strategy = :transaction
DatabaseCleaner.clean_with(:truncation)
end
config.around(:each) do |example|
DatabaseCleaner.cleaning do
example.run
end
end
end
I tested with other strategies without result.
There is a lot of seeds in development mod but it's on another database. There is 107 models in this project.
Is there a solution ?