require "cases/helper" require "support/connection_helper" class Mysql2ConnectionTest < ActiveRecord::Mysql2TestCase include ConnectionHelper fixtures :comments def setup super @subscriber = SQLSubscriber.new @subscription = ActiveSupport::Notifications.subscribe("sql.active_record", @subscriber) @connection = ActiveRecord::Base.connection end def teardown ActiveSupport::Notifications.unsubscribe(@subscription) super end def test_bad_connection assert_raise ActiveRecord::NoDatabaseError do configuration = ActiveRecord::Base.configurations["arunit"].merge(database: "inexistent_activerecord_unittest") connection = ActiveRecord::Base.mysql2_connection(configuration) connection.drop_table "ex", if_exists: true end end def test_truncate rows = ActiveRecord::Base.connection.exec_query("select count(*) from comments") count = rows.first.values.first assert_operator count, :>, 0 ActiveRecord::Base.connection.truncate("comments") rows = ActiveRecord::Base.connection.exec_query("select count(*) from comments") count = rows.first.values.first assert_equal 0, count end def test_no_automatic_reconnection_after_timeout assert @connection.active? @connection.update("set @@wait_timeout=1") sleep 2 assert !@connection.active? # Repair all fixture connections so other tests won't break. @fixture_connections.each(&:verify!) end def test_successful_reconnection_after_timeout_with_manual_reconnect assert @connection.active? @connection.update("set @@wait_timeout=1") sleep 2 @connection.reconnect! assert @connection.active? end def test_successful_reconnection_after_timeout_with_verify assert @connection.active? @connection.update("set @@wait_timeout=1") sleep 2 @connection.verify! assert @connection.active? end def test_mysql_connection_collation_is_configured assert_equal "utf8_unicode_ci", @connection.show_variable("collation_connection") assert_equal "utf8_general_ci", ARUnit2Model.connection.show_variable("collation_connection") end def test_mysql_default_in_strict_mode result = @connection.select_value("SELECT @@SESSION.sql_mode") assert_match %r(STRICT_ALL_TABLES), result end def test_mysql_strict_mode_disabled run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.merge(strict: false)) result = ActiveRecord::Base.connection.select_value("SELECT @@SESSION.sql_mode") assert_no_match %r(STRICT_ALL_TABLES), result end end def test_mysql_strict_mode_specified_default run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.merge(strict: :default)) global_sql_mode = ActiveRecord::Base.connection.select_value("SELECT @@GLOBAL.sql_mode") session_sql_mode = ActiveRecord::Base.connection.select_value("SELECT @@SESSION.sql_mode") assert_equal global_sql_mode, session_sql_mode end end def test_mysql_sql_mode_variable_overrides_strict_mode run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.deep_merge(variables: { "sql_mode" => "ansi" })) result = ActiveRecord::Base.connection.select_value("SELECT @@SESSION.sql_mode") assert_no_match %r(STRICT_ALL_TABLES), result end end def test_passing_arbitary_flags_to_adapter run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.merge(flags: Mysql2::Client::COMPRESS)) assert_equal (Mysql2::Client::COMPRESS | Mysql2::Client::FOUND_ROWS), ActiveRecord::Base.connection.raw_connection.query_options[:flags] end end def test_passing_flags_by_array_to_adapter run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.merge(flags: ["COMPRESS"])) assert_equal ["COMPRESS", "FOUND_ROWS"], ActiveRecord::Base.connection.raw_connection.query_options[:flags] end end def test_mysql_set_session_variable run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.deep_merge(variables: { default_week_format: 3 })) session_mode = ActiveRecord::Base.connection.exec_query "SELECT @@SESSION.DEFAULT_WEEK_FORMAT" assert_equal 3, session_mode.rows.first.first.to_i end end def test_mysql_set_session_variable_to_default run_without_connection do |orig_connection| ActiveRecord::Base.establish_connection(orig_connection.deep_merge(variables: { default_week_format: :default })) global_mode = ActiveRecord::Base.connection.exec_query "SELECT @@GLOBAL.DEFAULT_WEEK_FORMAT" session_mode = ActiveRecord::Base.connection.exec_query "SELECT @@SESSION.DEFAULT_WEEK_FORMAT" assert_equal global_mode.rows, session_mode.rows end end def test_logs_name_show_variable @connection.show_variable "foo" assert_equal "SCHEMA", @subscriber.logged[0][1] end def test_logs_name_rename_column_sql @connection.execute "CREATE TABLE `bar_baz` (`foo` varchar(255))" @subscriber.logged.clear @connection.send(:rename_column_sql, "bar_baz", "foo", "foo2") assert_equal "SCHEMA", @subscriber.logged[0][1] ensure @connection.execute "DROP TABLE `bar_baz`" end def test_get_and_release_advisory_lock lock_name = "test lock'n'name" got_lock = @connection.get_advisory_lock(lock_name) assert got_lock, "get_advisory_lock should have returned true but it didn't" assert_equal test_lock_free(lock_name), false, "expected the test advisory lock to be held but it wasn't" released_lock = @connection.release_advisory_lock(lock_name) assert released_lock, "expected release_advisory_lock to return true but it didn't" assert test_lock_free(lock_name), "expected the test lock to be available after releasing" end def test_release_non_existent_advisory_lock lock_name = "fake lock'n'name" released_non_existent_lock = @connection.release_advisory_lock(lock_name) assert_equal released_non_existent_lock, false, "expected release_advisory_lock to return false when there was no lock to release" end protected def test_lock_free(lock_name) @connection.select_value("SELECT IS_FREE_LOCK(#{@connection.quote(lock_name)})") == 1 end end