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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.delete_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
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