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diff --git a/test/unit/lib/redmine/menu_manager/mapper_test.rb b/test/unit/lib/redmine/menu_manager/mapper_test.rb
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+++ b/test/unit/lib/redmine/menu_manager/mapper_test.rb
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+# Redmine - project management software
+# Copyright (C) 2006-2009  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.dirname(__FILE__) + '/../../../../test_helper'
+
+class Redmine::MenuManager::MapperTest < Test::Unit::TestCase
+  context "Mapper#initialize" do
+    should "be tested"
+  end
+
+  def test_push_onto_root
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+
+    menu_mapper.exists?(:test_overview)
+  end
+
+  def test_push_onto_parent
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_child, { :controller => 'projects', :action => 'show'}, {:parent_menu => :test_overview}
+
+    assert menu_mapper.exists?(:test_child)
+    assert_equal :test_child, menu_mapper.find(:test_child).name
+  end
+
+  def test_push_onto_grandparent
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_child, { :controller => 'projects', :action => 'show'}, {:parent_menu => :test_overview}
+    menu_mapper.push :test_grandchild, { :controller => 'projects', :action => 'show'}, {:parent_menu => :test_child}
+
+    assert menu_mapper.exists?(:test_grandchild)
+    grandchild = menu_mapper.find(:test_grandchild)
+    assert_equal :test_grandchild, grandchild.name
+    assert_equal :test_child, grandchild.parent_menu
+  end
+
+  def test_push_first
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_second, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_third, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fourth, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fifth, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_first, { :controller => 'projects', :action => 'show'}, {:first => true}
+
+    root = menu_mapper.find(:root)
+    assert_equal 5, root.children.size
+    {0 => :test_first, 1 => :test_second, 2 => :test_third, 3 => :test_fourth, 4 => :test_fifth}.each do |position, name|
+      assert_not_nil root.children[position]
+      assert_equal name, root.children[position].name
+    end
+  
+  end
+  
+  def test_push_before
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_first, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_second, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fourth, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fifth, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_third, { :controller => 'projects', :action => 'show'}, {:before => :test_fourth}
+
+    root = menu_mapper.find(:root)
+    assert_equal 5, root.children.size
+    {0 => :test_first, 1 => :test_second, 2 => :test_third, 3 => :test_fourth, 4 => :test_fifth}.each do |position, name|
+      assert_not_nil root.children[position]
+      assert_equal name, root.children[position].name
+    end
+  
+  end
+
+  def test_push_after
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_first, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_second, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_third, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fifth, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fourth, { :controller => 'projects', :action => 'show'}, {:after => :test_third}
+
+    
+    root = menu_mapper.find(:root)
+    assert_equal 5, root.children.size
+    {0 => :test_first, 1 => :test_second, 2 => :test_third, 3 => :test_fourth, 4 => :test_fifth}.each do |position, name|
+      assert_not_nil root.children[position]
+      assert_equal name, root.children[position].name
+    end
+  
+  end
+
+  def test_push_last
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_first, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_second, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_third, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_fifth, { :controller => 'projects', :action => 'show'}, {:last => true}
+    menu_mapper.push :test_fourth, { :controller => 'projects', :action => 'show'}, {}
+
+    root = menu_mapper.find(:root)
+    assert_equal 5, root.children.size
+    {0 => :test_first, 1 => :test_second, 2 => :test_third, 3 => :test_fourth, 4 => :test_fifth}.each do |position, name|
+      assert_not_nil root.children[position]
+      assert_equal name, root.children[position].name
+    end
+  
+  end
+  
+  def test_exists_for_child_node
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+    menu_mapper.push :test_child, { :controller => 'projects', :action => 'show'}, {:parent_menu => :test_overview }
+
+    assert menu_mapper.exists?(:test_child)
+  end
+
+  def test_exists_for_invalid_node
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+
+    assert !menu_mapper.exists?(:nothing)
+  end
+
+  def test_find
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+
+    item = menu_mapper.find(:test_overview)
+    assert_equal :test_overview, item.name
+    assert_equal({:controller => 'projects', :action => 'show'}, item.url)
+  end
+
+  def test_find_missing
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+
+    item = menu_mapper.find(:nothing)
+    assert_equal nil, item
+  end
+
+  def test_delete
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    menu_mapper.push :test_overview, { :controller => 'projects', :action => 'show'}, {}
+    assert_not_nil menu_mapper.delete(:test_overview)
+
+    assert_nil menu_mapper.find(:test_overview)
+  end
+
+  def test_delete_missing
+    menu_mapper = Redmine::MenuManager::Mapper.new(:test_menu, {})
+    assert_nil menu_mapper.delete(:test_missing)
+  end
+end