# File test/test_EditProperties.rb, line 287
    def test_mount_mask_nil
      @EditProperties.document_position = '0'
      @EditProperties.document_type = 'Page'
      assert_equal('string', @EditProperties.doc_mask_type_selected)
      assert_equal('index.html', @EditProperties.doc_mask)
      @EditProperties.doc_mask_type_selected = 'nil'
      assert_equal('nil', @EditProperties.doc_mask_type_selected)
      assert_equal('index.html', @EditProperties.doc_mask)
      @EditProperties.write_properties
      assert_equal(1, @write_document_list_call)
      assert_equal(3, @document_list.length)
      assert_nil(@document_list[0]['mount_mask'])
      assert_nil(@document_list[1]['mount_mask'])
      assert_nil(@document_list[2]['mount_mask'])
    end