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# frozen_string_literal: true
# Redmine - project management software
# Copyright (C) 2006- Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
require_relative '../test_helper'
class IssueNestedSetConcurrencyTest < ActiveSupport::TestCase
fixtures :projects, :users,
:trackers, :projects_trackers,
:enabled_modules,
:issue_statuses,
:enumerations
self.use_transactional_tests = false
def setup
skip if sqlite?
if mysql?
connection = ActiveRecord::Base.connection_db_config.configuration_hash.deep_dup
connection[:variables] = mysql8? ? { transaction_isolation: "READ-COMMITTED" } : { tx_isolation: "READ-COMMITTED" }
ActiveRecord::Base.establish_connection connection
end
User.current = nil
CustomField.destroy_all
end
def teardown
Issue.delete_all
end
def test_concurrency
# Generates an issue and destroys it in order
# to load all needed classes before starting threads
i = Issue.generate!
i.destroy
root = Issue.generate!
assert_difference 'Issue.count', 60 do
threaded(3) do
10.times do
i = Issue.generate! :parent_issue_id => root.id
c1 = Issue.generate! :parent_issue_id => i.id
c2 = Issue.generate! :parent_issue_id => i.id
c3 = Issue.generate! :parent_issue_id => i.id
c2.reload.destroy
c1.reload.destroy
end
end
end
end
def test_concurrent_subtasks_creation
root = Issue.generate!
assert_difference 'Issue.count', 30 do
threaded(3) do
10.times do
Issue.generate! :parent_issue_id => root.id
end
end
end
root.reload
assert_equal [1, 62], [root.lft, root.rgt]
children_bounds = root.children.sort_by(&:lft).map {|c| [c.lft, c.rgt]}.flatten
assert_equal (2..61).to_a, children_bounds
end
def test_concurrent_subtask_removal
with_settings :notified_events => [] do
root = Issue.generate!
60.times do
Issue.generate! :parent_issue_id => root.id
end
# pick 40 random subtask ids
child_ids = Issue.where(root_id: root.id, parent_id: root.id).pluck(:id)
ids_to_remove = child_ids.sample(40).shuffle
ids_to_keep = child_ids - ids_to_remove
# remove these from the set, using four parallel threads
threads = []
ids_to_remove.each_slice(10) do |ids|
threads << Thread.new do
ActiveRecord::Base.connection_pool.with_connection do
begin
ids.each do |id|
Issue.find(id).update(parent_id: nil)
end
rescue => e
Thread.current[:exception] = e.message
end
end
end
end
threads.each do |thread|
thread.join
assert_nil thread[:exception]
end
assert_equal 20, Issue.where(parent_id: root.id).count
Issue.where(id: ids_to_remove).each do |issue|
assert_nil issue.parent_id
assert_equal issue.id, issue.root_id
assert_equal 1, issue.lft
assert_equal 2, issue.rgt
end
root.reload
assert_equal [1, 42], [root.lft, root.rgt]
children_bounds = root.children.sort_by(&:lft).map {|c| [c.lft, c.rgt]}.flatten
assert_equal (2..41).to_a, children_bounds
end
end
private
def threaded(count, &block)
with_settings :notified_events => [] do
threads = []
count.times do |i|
threads << Thread.new(i) do
ActiveRecord::Base.connection_pool.with_connection do
begin
yield
rescue => e
Thread.current[:exception] = e.message
end
end
end
end
threads.each do |thread|
thread.join
assert_nil thread[:exception]
end
end
end
end
|
