move things into SequelHelper that are only used there.

spec/database_cleaner/sequel/deletion_spec.rb

@@ -1,9 +1,6 @@
 require 'database_cleaner/sequel/deletion'
 require 'database_cleaner/shared_strategy'
-require 'sequel'
-require 'support/sequel/sequel_setup'
-# XXX: use ActiveRecord's db_config (`db/config.yml`) for CI/dev convenience
-require 'support/active_record/database_setup'
+require 'support/sequel/sequel_helper'
 
 module DatabaseCleaner
   module Sequel

spec/database_cleaner/sequel/transaction_spec.rb

@@ -1,6 +1,6 @@
 require 'database_cleaner/sequel/transaction'
 require 'database_cleaner/shared_strategy'
-require 'sequel'
+require 'support/sequel/sequel_helper'
 
 module DatabaseCleaner
   module Sequel

spec/database_cleaner/sequel/truncation_spec.rb

@@ -1,9 +1,6 @@
 require 'database_cleaner/sequel/truncation'
 require 'database_cleaner/shared_strategy'
-require 'sequel'
-require 'support/sequel/sequel_setup'
-# XXX: use ActiveRecord's db_config (`db/config.yml`) for CI/dev convenience
-require 'support/active_record/database_setup'
+require 'support/sequel/sequel_helper'
 
 module DatabaseCleaner
   module Sequel

spec/support/active_record/database_setup.rb

@@ -1,6 +0,0 @@
-require 'yaml'
-
-def db_config
-  config_path = 'db/config.yml'
-  @db_config ||= YAML.load(IO.read(config_path))
-end

spec/support/sequel/sequel_helper.rb

@@ -1,3 +1,11 @@
+require 'sequel'
+require 'yaml'
+
+def db_config
+  config_path = 'db/config.yml'
+  @db_config ||= YAML.load(IO.read(config_path))
+end
+
 class SequelHelper < Struct.new(:config)
   def setup
     if config[:url] == "postgres:///" || config[:url] == "sqlite:///"