Redmine 3.4.4

test/unit/project_nested_set_test.rb

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+# Redmine - project management software
+# Copyright (C) 2006-2017  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 File.expand_path('../../test_helper', __FILE__)
+
+class ProjectNestedSetTest < ActiveSupport::TestCase
+
+  def setup
+    Project.delete_all
+    Tracker.delete_all
+
+    @a = Project.create!(:name => 'A', :identifier => 'projecta')
+    @a1 = Project.create!(:name => 'A1', :identifier => 'projecta1')
+    @a1.set_parent!(@a)
+    @a2 = Project.create!(:name => 'A2', :identifier => 'projecta2')
+    @a2.set_parent!(@a)
+
+    @c = Project.create!(:name => 'C', :identifier => 'projectc')
+    @c1 = Project.create!(:name => 'C1', :identifier => 'projectc1')
+    @c1.set_parent!(@c)
+
+    @b = Project.create!(:name => 'B', :identifier => 'projectb')
+    @b2 = Project.create!(:name => 'B2', :identifier => 'projectb2')
+    @b2.set_parent!(@b)
+    @b1 = Project.create!(:name => 'B1', :identifier => 'projectb1')
+    @b1.set_parent!(@b)
+    @b11 = Project.create!(:name => 'B11', :identifier => 'projectb11')
+    @b11.set_parent!(@b1)
+  end
+
+  def test_valid_tree
+    assert_valid_nested_set
+  end
+
+  def test_rebuild_should_build_valid_tree
+    Project.update_all "lft = NULL, rgt = NULL"
+
+    Project.rebuild_tree!
+    assert_valid_nested_set
+  end
+
+  def test_rebuild_tree_should_build_valid_tree_even_with_valid_lft_rgt_values
+    Project.where({:id => @a.id }).update_all("name = 'YY'")
+    # lft and rgt values are still valid (Project.rebuild! would not update anything)
+    # but projects are not ordered properly (YY is in the first place)
+
+    Project.rebuild_tree!
+    assert_valid_nested_set
+  end
+
+  def test_rebuild_without_projects_should_not_fail
+    Project.delete_all
+    assert Project.rebuild_tree!
+  end
+
+  def test_moving_a_child_to_a_different_parent_should_keep_valid_tree
+    assert_no_difference 'Project.count' do
+      Project.find_by_name('B1').set_parent!(Project.find_by_name('A2'))
+    end
+    assert_valid_nested_set
+  end
+
+  def test_renaming_a_root_to_first_position_should_update_nested_set_order
+    @c.name = '1'
+    @c.save!
+    assert_valid_nested_set
+  end
+
+  def test_renaming_a_root_to_middle_position_should_update_nested_set_order
+    @a.name = 'BA'
+    @a.save!
+    assert_valid_nested_set
+  end
+
+  def test_renaming_a_root_to_last_position_should_update_nested_set_order
+    @a.name = 'D'
+    @a.save!
+    assert_valid_nested_set
+  end
+
+  def test_renaming_a_root_to_same_position_should_update_nested_set_order
+    @c.name = 'D'
+    @c.save!
+    assert_valid_nested_set
+  end
+
+  def test_renaming_a_child_should_update_nested_set_order
+    @a1.name = 'A3'
+    @a1.save!
+    assert_valid_nested_set
+  end
+
+  def test_renaming_a_child_with_child_should_update_nested_set_order
+    @b1.name = 'B3'
+    @b1.save!
+    assert_valid_nested_set
+  end
+
+  def test_adding_a_root_to_first_position_should_update_nested_set_order
+    project = Project.create!(:name => '1', :identifier => 'projectba')
+    assert_valid_nested_set
+  end
+
+  def test_adding_a_root_to_middle_position_should_update_nested_set_order
+    project = Project.create!(:name => 'BA', :identifier => 'projectba')
+    assert_valid_nested_set
+  end
+
+  def test_adding_a_root_to_last_position_should_update_nested_set_order
+    project = Project.create!(:name => 'Z', :identifier => 'projectba')
+    assert_valid_nested_set
+  end
+
+  def test_destroying_a_root_with_children_should_keep_valid_tree
+    assert_difference 'Project.count', -4 do
+      Project.find_by_name('B').destroy
+    end
+    assert_valid_nested_set
+  end
+
+  def test_destroying_a_child_with_children_should_keep_valid_tree
+    assert_difference 'Project.count', -2 do
+      Project.find_by_name('B1').destroy
+    end
+    assert_valid_nested_set
+  end
+
+  private
+
+  def assert_nested_set_values(h)
+    assert Project.valid?
+    h.each do |project, expected|
+      project.reload
+      assert_equal expected, [project.parent_id, project.lft, project.rgt], "Unexpected nested set values for #{project.name}"
+    end
+  end
+
+  def assert_valid_nested_set
+    projects = Project.all
+    lft_rgt = projects.map {|p| [p.lft, p.rgt]}.flatten
+    assert_equal projects.size * 2, lft_rgt.uniq.size
+    assert_equal 1, lft_rgt.min
+    assert_equal projects.size * 2, lft_rgt.max
+
+    projects.each do |project|
+      # lft should always be < rgt
+      assert project.lft < project.rgt, "lft=#{project.lft} was not < rgt=#{project.rgt} for project #{project.name}"
+      if project.parent_id
+        # child lft/rgt values must be greater/lower
+        assert_not_nil project.parent, "parent was nil for project #{project.name}"
+        assert project.lft > project.parent.lft, "lft=#{project.lft} was not > parent.lft=#{project.parent.lft} for project #{project.name}"
+        assert project.rgt < project.parent.rgt, "rgt=#{project.rgt} was not < parent.rgt=#{project.parent.rgt} for project #{project.name}"
+      end
+      # no overlapping lft/rgt values
+      overlapping = projects.detect {|other|
+        other != project && (
+          (other.lft > project.lft && other.lft < project.rgt && other.rgt > project.rgt) ||
+          (other.rgt > project.lft && other.rgt < project.rgt && other.lft < project.lft)
+        )
+      }
+      assert_nil overlapping, (overlapping && "Project #{overlapping.name} (#{overlapping.lft}/#{overlapping.rgt}) overlapped #{project.name} (#{project.lft}/#{project.rgt})")
+    end
+
+    # root projects sorted alphabetically
+    assert_equal Project.roots.map(&:name).sort, Project.roots.sort_by(&:lft).map(&:name), "Root projects were not properly sorted"
+    projects.each do |project|
+      if project.children.any?
+        # sibling projects sorted alphabetically
+        assert_equal project.children.map(&:name).sort, project.children.sort_by(&:lft).map(&:name), "Project #{project.name}'s children were not properly sorted"
+      end
+    end
+  end
+end