Automatically maintain test database schema

* Move check from generated helper to test_help.rb, so that all
  applications can benefit
* Rather than just raising when the test schema has pending migrations,
  try to load in the schema and only raise if there are pending
  migrations afterwards
* Opt out of the check by setting
  config.active_record.maintain_test_schema = false
* Deprecate db:test:* tasks. The test helper is now fully responsible
  for maintaining the test schema, so we don't need rake tasks for this.
  This is also a speed improvement since we're no longer reloading the
  test database on every call to "rake test".

1 files changed, 1 insertions, 8 deletions

diff --git a/activerecord/lib/active_record/railtie.rb b/activerecord/lib/active_record/railtie.rb
index 2a8cd83285..ec85b3c843 100644
--- a/activerecord/lib/active_record/railtie.rb
+++ b/activerecord/lib/active_record/railtie.rb
@@ -31,22 +31,15 @@ module ActiveRecord
 
 
     config.active_record.use_schema_cache_dump = true
+    config.active_record.maintain_test_schema = true
 
     config.eager_load_namespaces << ActiveRecord
 
     rake_tasks do
       require "active_record/base"
 
-      ActiveRecord::Tasks::DatabaseTasks.seed_loader = Rails.application
-      ActiveRecord::Tasks::DatabaseTasks.env = Rails.env
-
       namespace :db do
         task :load_config do
-          ActiveRecord::Tasks::DatabaseTasks.db_dir = Rails.application.config.paths["db"].first
-          ActiveRecord::Tasks::DatabaseTasks.migrations_paths = Rails.application.paths['db/migrate'].to_a
-          ActiveRecord::Tasks::DatabaseTasks.fixtures_path = File.join Rails.root, 'test', 'fixtures'
-          ActiveRecord::Tasks::DatabaseTasks.root = Rails.root
-
           configuration = if ENV["DATABASE_URL"]
             { Rails.env => ENV["DATABASE_URL"] }
           else