Redmine

        href = if controller.request.format.pdf?

                 # absolute link for pdf export of single page or all pages in a single document

                 options[:target] = '_blank'

                 options[:rel] = 'noopener'

                 project_wiki_page_url(project_id: page.project, id: page.title, version: nil)

               elsif controller.params[:format] == 'html' && controller.action_name == 'export'

                 # relative link for html export of all pages in a single document

                 "##{page.title}"

               elsif controller.params[:format] == 'html'

                 # absolute for html export of single page

                 "#{h(page.pretty_title)}.html"

               else

                 # link handling for rendering pages in UI

                 {:controller => 'wiki', :action => 'show',

                   :project_id => page.project, :id => page.title, :version => nil}

               end

            :target => options[:target],

            :rel => options[:rel],

  def test_render_page_hierarchy_when_action_is_export_and_format_html

    # Change action and format using stub

    controller.stubs(:params).returns({ format: 'html' })

  def test_render_page_hierarchy_links_when_format_is_html

    parent_page = WikiPage.find(1)

    child_page = WikiPage.find_by(parent_id: parent_page.id)

    pages_by_parent_id = {nil => [parent_page], parent_page.id => [child_page]}

    # Change format using stub

    controller.stubs(:params).returns({ format: 'html' })

    result = render_page_hierarchy(pages_by_parent_id, nil)

    assert_select_in result, 'ul.pages-hierarchy li a[href=?]', "#{h(parent_page.pretty_title)}.html"

    assert_select_in result, 'ul.pages-hierarchy li ul.pages-hierarchy a[href=?]', "#{h(child_page.pretty_title)}.html"

  end

  def test_render_page_hierarchy_links_when_format_is_pdf

    parent_page = WikiPage.find(1)

    child_page = WikiPage.find_by(parent_id: parent_page.id)

    pages_by_parent_id = {nil => [parent_page], parent_page.id => [child_page]}

    # Change request format using stub

    format = mock('format')

    format.stubs(:pdf?).returns(true)

    # Stub the controller's request.format to return the mocked format object

    controller.request.stubs(:format).returns(format)

    result = render_page_hierarchy(pages_by_parent_id, nil)

    parent_page_url = project_wiki_page_url(project_id: parent_page.project, id: parent_page.title, version: nil)

    child_page_url = project_wiki_page_url(project_id: child_page.project, id: child_page.title, version: nil)

    assert_select_in result, 'ul.pages-hierarchy li a[href=?]', parent_page_url

    assert_select_in result, 'ul.pages-hierarchy li ul.pages-hierarchy a[href=?]', child_page_url

    # Make sure that the pdf? method returns the expected value

    assert_equal true, controller.request.format.pdf?

  end