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synced 2022-11-09 12:12:34 -05:00
140 lines
4.2 KiB
Ruby
140 lines
4.2 KiB
Ruby
require "cases/helper"
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require "models/project"
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require "timeout"
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class PooledConnectionsTest < ActiveRecord::TestCase
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def setup
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@per_test_teardown = []
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@connection = ActiveRecord::Base.remove_connection
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end
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def teardown
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ActiveRecord::Base.clear_all_connections!
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ActiveRecord::Base.establish_connection(@connection)
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@per_test_teardown.each {|td| td.call }
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end
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def checkout_connections
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ActiveRecord::Base.establish_connection(@connection.merge({:pool => 2, :wait_timeout => 0.3}))
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@connections = []
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@timed_out = 0
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4.times do
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Thread.new do
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begin
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@connections << ActiveRecord::Base.connection_pool.checkout
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rescue ActiveRecord::ConnectionTimeoutError
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@timed_out += 1
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end
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end.join
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end
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end
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# Will deadlock due to lack of Monitor timeouts in 1.9
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if RUBY_VERSION < '1.9'
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def test_pooled_connection_checkout
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checkout_connections
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assert_equal 2, @connections.length
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assert_equal 2, @timed_out
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end
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end
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def checkout_checkin_connections(pool_size, threads)
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ActiveRecord::Base.establish_connection(@connection.merge({:pool => pool_size, :wait_timeout => 0.5}))
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@connection_count = 0
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@timed_out = 0
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threads.times do
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Thread.new do
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begin
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conn = ActiveRecord::Base.connection_pool.checkout
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sleep 0.1
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ActiveRecord::Base.connection_pool.checkin conn
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@connection_count += 1
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rescue ActiveRecord::ConnectionTimeoutError
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@timed_out += 1
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end
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end.join
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end
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end
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def test_pooled_connection_checkin_one
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checkout_checkin_connections 1, 2
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assert_equal 2, @connection_count
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assert_equal 0, @timed_out
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assert_equal 1, ActiveRecord::Base.connection_pool.connections.size
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end
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def test_pooled_connection_checkin_two
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checkout_checkin_connections 2, 3
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assert_equal 3, @connection_count
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assert_equal 0, @timed_out
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assert_equal 1, ActiveRecord::Base.connection_pool.connections.size
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end
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def test_pooled_connection_checkout_existing_first
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ActiveRecord::Base.establish_connection(@connection.merge({:pool => 1}))
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conn_pool = ActiveRecord::Base.connection_pool
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conn = conn_pool.checkout
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conn_pool.checkin(conn)
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conn = conn_pool.checkout
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assert ActiveRecord::ConnectionAdapters::AbstractAdapter === conn
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conn_pool.checkin(conn)
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end
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def test_not_connected_defined_connection_returns_false
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ActiveRecord::Base.establish_connection(@connection)
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assert ! ActiveRecord::Base.connected?
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end
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def test_undefined_connection_returns_false
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old_handler = ActiveRecord::Base.connection_handler
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ActiveRecord::Base.connection_handler = ActiveRecord::ConnectionAdapters::ConnectionHandler.new
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assert ! ActiveRecord::Base.connected?
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ensure
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ActiveRecord::Base.connection_handler = old_handler
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end
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def test_with_connection_nesting_safety
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ActiveRecord::Base.establish_connection(@connection.merge({:pool => 1, :wait_timeout => 0.1}))
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before_count = Project.count
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add_record('one')
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ActiveRecord::Base.connection.transaction do
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add_record('two')
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# Have another thread try to screw up the transaction
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Thread.new do
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ActiveRecord::Base.connection.rollback_db_transaction
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ActiveRecord::Base.connection_pool.release_connection
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end
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add_record('three')
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end
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after_count = Project.count
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assert_equal 3, after_count - before_count
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end
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def test_connection_pool_callbacks
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checked_out, checked_in = false, false
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ActiveRecord::ConnectionAdapters::AbstractAdapter.class_eval do
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set_callback(:checkout, :after) { checked_out = true }
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set_callback(:checkin, :before) { checked_in = true }
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end
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@per_test_teardown << proc do
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ActiveRecord::ConnectionAdapters::AbstractAdapter.class_eval do
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reset_callbacks :checkout
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reset_callbacks :checkin
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end
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end
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checkout_checkin_connections 1, 1
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assert checked_out
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assert checked_in
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end
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private
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def add_record(name)
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ActiveRecord::Base.connection_pool.with_connection { Project.create! :name => name }
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end
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end unless %w(FrontBase).include? ActiveRecord::Base.connection.adapter_name
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