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# frozen_string_literal: true
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_predicate @connection, :active?
@connection.update("set @@wait_timeout=1")
sleep 2
assert_not_predicate @connection, :active?
ensure
# 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_predicate @connection, :active?
@connection.update("set @@wait_timeout=1")
sleep 2
@connection.reconnect!
assert_predicate @connection, :active?
end
def test_successful_reconnection_after_timeout_with_verify
assert_predicate @connection, :active?
@connection.update("set @@wait_timeout=1")
sleep 2
@connection.verify!
assert_predicate @connection, :active?
end
def test_execute_after_disconnect
@connection.disconnect!
error = assert_raise(ActiveRecord::StatementInvalid) do
@connection.execute("SELECT 1")
end
assert_kind_of Mysql2::Error, error.cause
end
def test_quote_after_disconnect
@connection.disconnect!
assert_raise(Mysql2::Error) do
@connection.quote("string")
end
end
def test_active_after_disconnect
@connection.disconnect!
assert_equal false, @connection.active?
end
def test_wait_timeout_as_string
run_without_connection do |orig_connection|
ActiveRecord::Base.establish_connection(orig_connection.merge(wait_timeout: "60"))
result = ActiveRecord::Base.connection.select_value("SELECT @@SESSION.wait_timeout")
assert_equal 60, result
end
end
def test_wait_timeout_as_url
run_without_connection do |orig_connection|
ActiveRecord::Base.establish_connection(orig_connection.merge("url" => "mysql2:///?wait_timeout=60"))
result = ActiveRecord::Base.connection.select_value("SELECT @@SESSION.wait_timeout")
assert_equal 60, result
end
end
def test_mysql_connection_collation_is_configured
assert_equal "utf8mb4_unicode_ci", @connection.show_variable("collation_connection")
assert_equal "utf8mb4_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_arbitrary_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
ActiveRecord::Base.connection.materialize_transactions
@subscriber.logged.clear
@connection.show_variable "foo"
assert_equal "SCHEMA", @subscriber.logged[0][1]
end
def test_logs_name_rename_column_for_alter
@connection.execute "CREATE TABLE `bar_baz` (`foo` varchar(255))"
@subscriber.logged.clear
@connection.send(:rename_column_for_alter, "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
private
def test_lock_free(lock_name)
@connection.select_value("SELECT IS_FREE_LOCK(#{@connection.quote(lock_name)})") == 1
end
end
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