Index: test/unit/project_copy_test.rb
===================================================================
--- test/unit/project_copy_test.rb	(revision 12626)
+++ test/unit/project_copy_test.rb	(working copy)
@@ -316,6 +316,7 @@
     assert @project.members.any?
     assert @project.issue_categories.any?
     assert @project.issues.empty?
+    assert @project.documents.empty?
   end
 
   test "#copy should copy subtasks" do
@@ -334,4 +335,34 @@
     child_copy = copy.children.detect {|c| c.subject == 'Child1'}
     assert child_copy.descendants.any?
   end
+
+  test "#copy should copy documents" do
+    @source_project.documents << Document.generate!(:title => "copy document title",
+                                              :category_id => 1,
+                                              :project_id => @source_project.id)
+    assert @project.valid?
+    assert @project.documents.empty?
+    assert @project.copy(@source_project)
+
+    assert_equal @source_project.documents.size, @project.documents.size
+    @project.documents.each do |document|
+      assert document.valid?
+      assert_equal @project, document.project
+    end
+
+    copied_document = @project.documents.where(:title => "copy document title").first
+    assert copied_document
+  end
+
+  test "#copy should copy document attachments" do
+    document = Document.generate!(:title => "copy document attachment", :category_id => 1, :project_id => @source_project.id)
+    Attachment.create!(:container => document, :file => uploaded_test_file("testfile.txt", "text/plain"), :author_id => 1)
+    @source_project.documents << document
+    assert @project.copy(@source_project)
+
+    copied_document = @project.documents.where(:title => "copy document attachment").first
+    assert_not_nil copied_document
+    assert_equal 1, copied_document.attachments.count, "Attachment not copied"
+    assert_equal "testfile.txt", copied_document.attachments.first.filename
+  end
 end
Index: test/object_helpers.rb
===================================================================
--- test/object_helpers.rb	(revision 12626)
+++ test/object_helpers.rb	(working copy)
@@ -178,4 +178,13 @@
     changeset.save!
     changeset
   end
+
+  def Document.generate!(attributes={})
+    document = Document.new(attributes)
+    document.project ||= Project.find(1)
+    document.category ||= document.project.categories.first
+    document.title = 'Generated' if document.title.blank?
+    yield document if block_given?
+    document
+  end
 end
Index: app/models/project.rb
===================================================================
--- app/models/project.rb	(revision 12626)
+++ app/models/project.rb	(working copy)
@@ -709,7 +709,7 @@
   def copy(project, options={})
     project = project.is_a?(Project) ? project : Project.find(project)
 
-    to_be_copied = %w(wiki versions issue_categories issues members queries boards)
+    to_be_copied = %w(wiki versions issue_categories issues members queries boards documents)
     to_be_copied = to_be_copied & options[:only].to_a unless options[:only].nil?
 
     Project.transaction do
@@ -958,6 +958,20 @@
     end
   end
 
+  # Copies documents from +project+
+  def copy_documents(project)
+    project.documents.each do |document|
+      new_document = Document.new
+      new_document.attributes = document.attributes.dup.except("id", "project_id")
+      new_document.project = self
+      self.documents << new_document
+      # Copy attachments to document
+      new_document.attachments = document.attachments.map do |attachement|
+        attachement.copy(:container => new_document)
+      end
+    end
+  end
+
   def allowed_permissions
     @allowed_permissions ||= begin
       module_names = enabled_modules.loaded? ? enabled_modules.map(&:name) : enabled_modules.pluck(:name)
Index: app/views/projects/copy.html.erb
===================================================================
--- app/views/projects/copy.html.erb	(revision 12626)
+++ app/views/projects/copy.html.erb	(working copy)
@@ -10,6 +10,7 @@
   <label class="block"><%= check_box_tag 'only[]', 'issues', true %> <%= l(:label_issue_plural) %> (<%= @source_project.issues.count %>)</label>
   <label class="block"><%= check_box_tag 'only[]', 'queries', true %> <%= l(:label_query_plural) %> (<%= @source_project.queries.count %>)</label>
   <label class="block"><%= check_box_tag 'only[]', 'boards', true %> <%= l(:label_board_plural) %> (<%= @source_project.boards.count %>)</label>
+  <label class="block"><%= check_box_tag 'only[]', 'documents', true %> <%= l(:label_document_plural) %> (<%= @source_project.documents.count %>)</label>
   <label class="block"><%= check_box_tag 'only[]', 'wiki', true %> <%= l(:label_wiki_page_plural) %> (<%= @source_project.wiki.nil? ? 0 : @source_project.wiki.pages.count %>)</label>
   <%= hidden_field_tag 'only[]', '' %>
   <br />