diff options
| -rw-r--r-- | activerecord/lib/active_record/test_fixtures.rb | 23 | ||||
| -rw-r--r-- | activerecord/test/cases/fixtures_test.rb | 34 |
2 files changed, 57 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/test_fixtures.rb b/activerecord/lib/active_record/test_fixtures.rb index 7b7b3f7112..d29fc9f84b 100644 --- a/activerecord/lib/active_record/test_fixtures.rb +++ b/activerecord/lib/active_record/test_fixtures.rb @@ -173,10 +173,33 @@ module ActiveRecord end def enlist_fixture_connections + setup_shared_connection_pool + ActiveRecord::Base.connection_handler.connection_pool_list.map(&:connection) end private + + # Shares the writing connection pool with connections on + # other handlers. + # + # In an application with a primary and replica the test fixtures + # need to share a connection pool so that the reading connection + # can see data in the open transaction on the writing connection. + def setup_shared_connection_pool + writing_handler = ActiveRecord::Base.connection_handler + + ActiveRecord::Base.connection_handlers.values.each do |handler| + if handler != writing_handler + handler.connection_pool_list.each do |pool| + name = pool.spec.name + writing_connection = writing_handler.retrieve_connection_pool(name) + handler.send(:owner_to_pool)[name] = writing_connection + end + end + end + end + def load_fixtures(config) fixtures = ActiveRecord::FixtureSet.create_fixtures(fixture_path, fixture_table_names, fixture_class_names, config) Hash[fixtures.map { |f| [f.name, f] }] diff --git a/activerecord/test/cases/fixtures_test.rb b/activerecord/test/cases/fixtures_test.rb index fe2f417a04..32021c5ebd 100644 --- a/activerecord/test/cases/fixtures_test.rb +++ b/activerecord/test/cases/fixtures_test.rb @@ -1362,3 +1362,37 @@ class NilFixturePathTest < ActiveRecord::TestCase MSG end end + +class MultipleDatabaseFixturesTest < ActiveRecord::TestCase + test "enlist_fixture_connections ensures multiple databases share a connection pool" do + with_temporary_connection_pool do + ActiveRecord::Base.connects_to database: { writing: :arunit, reading: :arunit2 } + + rw_conn = ActiveRecord::Base.connection + ro_conn = ActiveRecord::Base.connection_handlers[:reading].connection_pool_list.first.connection + + assert_not_equal rw_conn, ro_conn + + enlist_fixture_connections + + rw_conn = ActiveRecord::Base.connection + ro_conn = ActiveRecord::Base.connection_handlers[:reading].connection_pool_list.first.connection + + assert_equal rw_conn, ro_conn + end + ensure + ActiveRecord::Base.connection_handlers = { writing: ActiveRecord::Base.connection_handler } + end + + private + + def with_temporary_connection_pool + old_pool = ActiveRecord::Base.connection_handler.retrieve_connection_pool(ActiveRecord::Base.connection_specification_name) + new_pool = ActiveRecord::ConnectionAdapters::ConnectionPool.new ActiveRecord::Base.connection_pool.spec + ActiveRecord::Base.connection_handler.send(:owner_to_pool)["primary"] = new_pool + + yield + ensure + ActiveRecord::Base.connection_handler.send(:owner_to_pool)["primary"] = old_pool + end +end |