jro_apps/redmine Commit - r14161:1dbb2562934f

Merged r14473 (#20278)....

Jean-Philippe Lang -

r14161:1dbb2562934f

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app/models/attachment.rb +1 -1

              # Redmine - project management software
              # Copyright (C) 2006-2015  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 "digest/md5"
              require "fileutils"
              class Attachment < ActiveRecord::Base
                belongs_to :container, :polymorphic => true
                belongs_to :author, :class_name => "User"
                validates_presence_of :filename, :author
                validates_length_of :filename, :maximum => 255
                validates_length_of :disk_filename, :maximum => 255
                validates_length_of :description, :maximum => 255
                validate :validate_max_file_size
                attr_protected :id
                acts_as_event :title => :filename,
                              :url => Proc.new {|o| {:controller => 'attachments', :action => 'download', :id => o.id, :filename => o.filename}}
                acts_as_activity_provider :type => 'files',
                                          :permission => :view_files,
                                          :author_key => :author_id,
                                          :scope => select("#{Attachment.table_name}.*").
                                                    joins("LEFT JOIN #{Version.table_name} ON #{Attachment.table_name}.container_type='Version' AND #{Version.table_name}.id = #{Attachment.table_name}.container_id " +
                                                          "LEFT JOIN #{Project.table_name} ON #{Version.table_name}.project_id = #{Project.table_name}.id OR ( #{Attachment.table_name}.container_type='Project' AND #{Attachment.table_name}.container_id = #{Project.table_name}.id )")
                acts_as_activity_provider :type => 'documents',
                                          :permission => :view_documents,
                                          :author_key => :author_id,
                                          :scope => select("#{Attachment.table_name}.*").
                                                    joins("LEFT JOIN #{Document.table_name} ON #{Attachment.table_name}.container_type='Document' AND #{Document.table_name}.id = #{Attachment.table_name}.container_id " +
                                                          "LEFT JOIN #{Project.table_name} ON #{Document.table_name}.project_id = #{Project.table_name}.id")
                cattr_accessor :storage_path
                @@storage_path = Redmine::Configuration['attachments_storage_path'] || File.join(Rails.root, "files")
                cattr_accessor :thumbnails_storage_path
                @@thumbnails_storage_path = File.join(Rails.root, "tmp", "thumbnails")
                before_create :files_to_final_location
                after_destroy :delete_from_disk
                # Returns an unsaved copy of the attachment
                def copy(attributes=nil)
                  copy = self.class.new
                  copy.attributes = self.attributes.dup.except("id", "downloads")
                  copy.attributes = attributes if attributes
                  copy
                end
                def validate_max_file_size
                  if @temp_file && self.filesize > Setting.attachment_max_size.to_i.kilobytes
                    errors.add(:base, l(:error_attachment_too_big, :max_size => Setting.attachment_max_size.to_i.kilobytes))
                  end
                end
                def file=(incoming_file)
                  unless incoming_file.nil?
                    @temp_file = incoming_file
                    if @temp_file.size > 0
                      if @temp_file.respond_to?(:original_filename)
                        self.filename = @temp_file.original_filename
                        self.filename.force_encoding("UTF-8")
                      end
                      if @temp_file.respond_to?(:content_type)
                        self.content_type = @temp_file.content_type.to_s.chomp
                      end
                      self.filesize = @temp_file.size
                    end
                  end
                end
                def file
                  nil
                end
                def filename=(arg)
                  write_attribute :filename, sanitize_filename(arg.to_s)
                  filename
                end
                # Copies the temporary file to its final location
                # and computes its MD5 hash
                def files_to_final_location
                  if @temp_file && (@temp_file.size > 0)
                    self.disk_directory = target_directory
                    self.disk_filename = Attachment.disk_filename(filename, disk_directory)
                    logger.info("Saving attachment '#{self.diskfile}' (#{@temp_file.size} bytes)") if logger
                    path = File.dirname(diskfile)
                    unless File.directory?(path)
                      FileUtils.mkdir_p(path)
                    end
                    md5 = Digest::MD5.new
                    File.open(diskfile, "wb") do |f|
                      if @temp_file.respond_to?(:read)
                        buffer = ""
                        while (buffer = @temp_file.read(8192))
                          f.write(buffer)
                          md5.update(buffer)
                        end
                      else
                        f.write(@temp_file)
                        md5.update(@temp_file)
                      end
                    end
                    self.digest = md5.hexdigest
                  end
                  @temp_file = nil
                  if content_type.blank? && filename.present?
                    self.content_type = Redmine::MimeType.of(filename)
                  end
                  # Don't save the content type if it's longer than the authorized length
                  if self.content_type && self.content_type.length > 255
                    self.content_type = nil
                  end
                end
                # Deletes the file from the file system if it's not referenced by other attachments
                def delete_from_disk
                  if Attachment.where("disk_filename = ? AND id <> ?", disk_filename, id).empty?
                    delete_from_disk!
                  end
                end
                # Returns file's location on disk
                def diskfile
                  File.join(self.class.storage_path, disk_directory.to_s, disk_filename.to_s)
                end
                def title
                  title = filename.to_s
                  if description.present?
                    title << " (#{description})"
                  end
                  title
                end
                def increment_download
                  increment!(:downloads)
                end
                def project
                  container.try(:project)
                end
                def visible?(user=User.current)
                  if container_id
                    container && container.attachments_visible?(user)
                  else
                    author == user
                  end
                end
                def editable?(user=User.current)
                  if container_id
                    container && container.attachments_editable?(user)
                  else
                    author == user
                  end
                end
                def deletable?(user=User.current)
                  if container_id
                    container && container.attachments_deletable?(user)
                  else
                    author == user
                  end
                end
                def image?
                  !!(self.filename =~ /\.(bmp|gif|jpg|jpe|jpeg|png)$/i)
                end
                def thumbnailable?
                  image?
                end
                # Returns the full path the attachment thumbnail, or nil
                # if the thumbnail cannot be generated.
                def thumbnail(options={})
                  if thumbnailable? && readable?
                    size = options[:size].to_i
                    if size > 0
                      # Limit the number of thumbnails per image
                      size = (size / 50) * 50
                      # Maximum thumbnail size
                      size = 800 if size > 800
                    else
                      size = Setting.thumbnails_size.to_i
                    end
                    size = 100 unless size > 0
                    target = File.join(self.class.thumbnails_storage_path, "#{id}_#{digest}_#{size}.thumb")
                    begin
                      Redmine::Thumbnail.generate(self.diskfile, target, size)
                    rescue => e
                      logger.error "An error occured while generating thumbnail for #{disk_filename} to #{target}\nException was: #{e.message}" if logger
                      return nil
                    end
                  end
                end
                # Deletes all thumbnails
                def self.clear_thumbnails
                  Dir.glob(File.join(thumbnails_storage_path, "*.thumb")).each do |file|
                    File.delete file
                  end
                end
                def is_text?
                  Redmine::MimeType.is_type?('text', filename)
                end
                def is_diff?
                  self.filename =~ /\.(patch|diff)$/i
                end
                # Returns true if the file is readable
                def readable?
                  File.readable?(diskfile)
                end
                # Returns the attachment token
                def token
                  "#{id}.#{digest}"
                end
                # Finds an attachment that matches the given token and that has no container
                def self.find_by_token(token)
                  if token.to_s =~ /^(\d+)\.([0-9a-f]+)$/
                    attachment_id, attachment_digest = $1, $2
                    attachment = Attachment.where(:id => attachment_id, :digest => attachment_digest).first
                    if attachment && attachment.container.nil?
                      attachment
                    end
                  end
                end
                # Bulk attaches a set of files to an object
                #
                # Returns a Hash of the results:
                # :files => array of the attached files
                # :unsaved => array of the files that could not be attached
                def self.attach_files(obj, attachments)
                  result = obj.save_attachments(attachments, User.current)
                  obj.attach_saved_attachments
                  result
                end
                # Updates the filename and description of a set of attachments
                # with the given hash of attributes. Returns true if all
                # attachments were updated.
                #
                # Example:
                #   Attachment.update_attachments(attachments, {
                #     4 => {:filename => 'foo'},
                #     7 => {:filename => 'bar', :description => 'file description'}
                #   })
                #
                def self.update_attachments(attachments, params)
                  params = params.transform_keys {|key| key.to_i}
                  saved = true
                  transaction do
                    attachments.each do |attachment|
                      if p = params[attachment.id]
                        attachment.filename = p[:filename] if p.key?(:filename)
                        attachment.description = p[:description] if p.key?(:description)
                        saved &&= attachment.save
                      end
                    end
                    unless saved
                      raise ActiveRecord::Rollback
                    end
                  end
                  saved
                end
                def self.latest_attach(attachments, filename)
                  attachments.sort_by(&:created_on).reverse.detect do |att|
-                   att.filename.downcase == filename.downcase
+                   filename.casecmp(att.filename) == 0
                  end
                end
                def self.prune(age=1.day)
                  Attachment.where("created_on < ? AND (container_type IS NULL OR container_type = '')", Time.now - age).destroy_all
                end
                # Moves an existing attachment to its target directory
                def move_to_target_directory!
                  return unless !new_record? & readable?
                  src = diskfile
                  self.disk_directory = target_directory
                  dest = diskfile
                  return if src == dest
                  if !FileUtils.mkdir_p(File.dirname(dest))
                    logger.error "Could not create directory #{File.dirname(dest)}" if logger
                    return
                  end
                  if !FileUtils.mv(src, dest)
                    logger.error "Could not move attachment from #{src} to #{dest}" if logger
                    return
                  end
                  update_column :disk_directory, disk_directory
                end
                # Moves existing attachments that are stored at the root of the files
                # directory (ie. created before Redmine 2.3) to their target subdirectories
                def self.move_from_root_to_target_directory
                  Attachment.where("disk_directory IS NULL OR disk_directory = ''").find_each do |attachment|
                    attachment.move_to_target_directory!
                  end
                end
                private
                # Physically deletes the file from the file system
                def delete_from_disk!
                  if disk_filename.present? && File.exist?(diskfile)
                    File.delete(diskfile)
                  end
                end
                def sanitize_filename(value)
                  # get only the filename, not the whole path
                  just_filename = value.gsub(/\A.*(\\|\/)/m, '')
                  # Finally, replace invalid characters with underscore
                  just_filename.gsub(/[\/\?\%\*\:\|\"\'<>\n\r]+/, '_')
                end
                # Returns the subdirectory in which the attachment will be saved
                def target_directory
                  time = created_on || DateTime.now
                  time.strftime("%Y/%m")
                end
                # Returns an ASCII or hashed filename that do not
                # exists yet in the given subdirectory
                def self.disk_filename(filename, directory=nil)
                  timestamp = DateTime.now.strftime("%y%m%d%H%M%S")
                  ascii = ''
                  if filename =~ %r{^[a-zA-Z0-9_\.\-]*$}
                    ascii = filename
                  else
                    ascii = Digest::MD5.hexdigest(filename)
                    # keep the extension if any
                    ascii << $1 if filename =~ %r{(\.[a-zA-Z0-9]+)$}
                  end
                  while File.exist?(File.join(storage_path, directory.to_s, "#{timestamp}_#{ascii}"))
                    timestamp.succ!
                  end
                  "#{timestamp}_#{ascii}"
                end
              end

test/unit/attachment_test.rb +7 0

              # encoding: utf-8
              #
              # Redmine - project management software
              # Copyright (C) 2006-2015  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 AttachmentTest < ActiveSupport::TestCase
                fixtures :users, :projects, :roles, :members, :member_roles,
                         :enabled_modules, :issues, :trackers, :attachments
                class MockFile
                  attr_reader :original_filename, :content_type, :content, :size
                  def initialize(attributes)
                    @original_filename = attributes[:original_filename]
                    @content_type = attributes[:content_type]
                    @content = attributes[:content] || "Content"
                    @size = content.size
                  end
                end
                def setup
                  set_tmp_attachments_directory
                end
                def test_container_for_new_attachment_should_be_nil
                  assert_nil Attachment.new.container
                end
                def test_filename_should_remove_eols
                  assert_equal "line_feed", Attachment.new(:filename => "line\nfeed").filename
                  assert_equal "line_feed", Attachment.new(:filename => "some\npath/line\nfeed").filename
                  assert_equal "carriage_return", Attachment.new(:filename => "carriage\rreturn").filename
                  assert_equal "carriage_return", Attachment.new(:filename => "some\rpath/carriage\rreturn").filename
                end
                def test_create
                  a = Attachment.new(:container => Issue.find(1),
                                     :file => uploaded_test_file("testfile.txt", "text/plain"),
                                     :author => User.find(1))
                  assert a.save
                  assert_equal 'testfile.txt', a.filename
                  assert_equal 59, a.filesize
                  assert_equal 'text/plain', a.content_type
                  assert_equal 0, a.downloads
                  assert_equal '1478adae0d4eb06d35897518540e25d6', a.digest
                  assert a.disk_directory
                  assert_match %r{\A\d{4}/\d{2}\z}, a.disk_directory
                  assert File.exist?(a.diskfile)
                  assert_equal 59, File.size(a.diskfile)
                end
                def test_create_should_clear_content_type_if_too_long
                  a = Attachment.new(:container => Issue.find(1),
                                     :file => uploaded_test_file("testfile.txt", "text/plain"),
                                     :author => User.find(1),
                                     :content_type => 'a'*300)
                  assert a.save
                  a.reload
                  assert_nil a.content_type
                end
                def test_copy_should_preserve_attributes
                  a = Attachment.find(1)
                  copy = a.copy
                  assert_save copy
                  copy = Attachment.order('id DESC').first
                  %w(filename filesize content_type author_id created_on description digest disk_filename disk_directory diskfile).each do |attribute|
                    assert_equal a.send(attribute), copy.send(attribute), "#{attribute} was different"
                  end
                end
                def test_size_should_be_validated_for_new_file
                  with_settings :attachment_max_size => 0 do
                    a = Attachment.new(:container => Issue.find(1),
                                       :file => uploaded_test_file("testfile.txt", "text/plain"),
                                       :author => User.find(1))
                    assert !a.save
                  end
                end
                def test_size_should_not_be_validated_when_copying
                  a = Attachment.create!(:container => Issue.find(1),
                                         :file => uploaded_test_file("testfile.txt", "text/plain"),
                                         :author => User.find(1))
                  with_settings :attachment_max_size => 0 do
                    copy = a.copy
                    assert copy.save
                  end
                end
                def test_description_length_should_be_validated
                  a = Attachment.new(:description => 'a' * 300)
                  assert !a.save
                  assert_not_equal [], a.errors[:description]
                end
                def test_destroy
                  a = Attachment.new(:container => Issue.find(1),
                                     :file => uploaded_test_file("testfile.txt", "text/plain"),
                                     :author => User.find(1))
                  assert a.save
                  assert_equal 'testfile.txt', a.filename
                  assert_equal 59, a.filesize
                  assert_equal 'text/plain', a.content_type
                  assert_equal 0, a.downloads
                  assert_equal '1478adae0d4eb06d35897518540e25d6', a.digest
                  diskfile = a.diskfile
                  assert File.exist?(diskfile)
                  assert_equal 59, File.size(a.diskfile)
                  assert a.destroy
                  assert !File.exist?(diskfile)
                end
                def test_destroy_should_not_delete_file_referenced_by_other_attachment
                  a = Attachment.create!(:container => Issue.find(1),
                                         :file => uploaded_test_file("testfile.txt", "text/plain"),
                                         :author => User.find(1))
                  diskfile = a.diskfile
                  copy = a.copy
                  copy.save!
                  assert File.exists?(diskfile)
                  a.destroy
                  assert File.exists?(diskfile)
                  copy.destroy
                  assert !File.exists?(diskfile)
                end
                def test_create_should_auto_assign_content_type
                  a = Attachment.new(:container => Issue.find(1),
                                     :file => uploaded_test_file("testfile.txt", ""),
                                     :author => User.find(1))
                  assert a.save
                  assert_equal 'text/plain', a.content_type
                end
                def test_identical_attachments_at_the_same_time_should_not_overwrite
                  a1 = Attachment.create!(:container => Issue.find(1),
                                          :file => uploaded_test_file("testfile.txt", ""),
                                          :author => User.find(1))
                  a2 = Attachment.create!(:container => Issue.find(1),
                                          :file => uploaded_test_file("testfile.txt", ""),
                                          :author => User.find(1))
                  assert a1.disk_filename != a2.disk_filename
                end
                def test_filename_should_be_basenamed
                  a = Attachment.new(:file => MockFile.new(:original_filename => "path/to/the/file"))
                  assert_equal 'file', a.filename
                end
                def test_filename_should_be_sanitized
                  a = Attachment.new(:file => MockFile.new(:original_filename => "valid:[] invalid:?%*|\"'<>chars"))
                  assert_equal 'valid_[] invalid_chars', a.filename
                end
                def test_diskfilename
                  assert Attachment.disk_filename("test_file.txt") =~ /^\d{12}_test_file.txt$/
                  assert_equal 'test_file.txt', Attachment.disk_filename("test_file.txt")[13..-1]
                  assert_equal '770c509475505f37c2b8fb6030434d6b.txt', Attachment.disk_filename("test_accentué.txt")[13..-1]
                  assert_equal 'f8139524ebb8f32e51976982cd20a85d', Attachment.disk_filename("test_accentué")[13..-1]
                  assert_equal 'cbb5b0f30978ba03731d61f9f6d10011', Attachment.disk_filename("test_accentué.ça")[13..-1]
                end
                def test_title
                  a = Attachment.new(:filename => "test.png")
                  assert_equal "test.png", a.title
                  a = Attachment.new(:filename => "test.png", :description => "Cool image")
                  assert_equal "test.png (Cool image)", a.title
                end
                def test_new_attachment_should_be_editable_by_authot
                  user = User.find(1)
                  a = Attachment.new(:author => user)
                  assert_equal true, a.editable?(user)
                end
                def test_prune_should_destroy_old_unattached_attachments
                  Attachment.create!(:file => uploaded_test_file("testfile.txt", ""), :author_id => 1, :created_on => 2.days.ago)
                  Attachment.create!(:file => uploaded_test_file("testfile.txt", ""), :author_id => 1, :created_on => 2.days.ago)
                  Attachment.create!(:file => uploaded_test_file("testfile.txt", ""), :author_id => 1)
                  assert_difference 'Attachment.count', -2 do
                    Attachment.prune
                  end
                end
                def test_move_from_root_to_target_directory_should_move_root_files
                  a = Attachment.find(20)
                  assert a.disk_directory.blank?
                  # Create a real file for this fixture
                  File.open(a.diskfile, "w") do |f|
                    f.write "test file at the root of files directory"
                  end
                  assert a.readable?
                  Attachment.move_from_root_to_target_directory
                  a.reload
                  assert_equal '2012/05', a.disk_directory
                  assert a.readable?
                end
                test "Attachmnet.attach_files should attach the file" do
                  issue = Issue.first
                  assert_difference 'Attachment.count' do
                    Attachment.attach_files(issue,
                      '1' => {
                        'file' => uploaded_test_file('testfile.txt', 'text/plain'),
                        'description' => 'test'
                      })
                  end
                  attachment = Attachment.order('id DESC').first
                  assert_equal issue, attachment.container
                  assert_equal 'testfile.txt', attachment.filename
                  assert_equal 59, attachment.filesize
                  assert_equal 'test', attachment.description
                  assert_equal 'text/plain', attachment.content_type
                  assert File.exists?(attachment.diskfile)
                  assert_equal 59, File.size(attachment.diskfile)
                end
                test "Attachmnet.attach_files should add unsaved files to the object as unsaved attachments" do
                  # Max size of 0 to force Attachment creation failures
                  with_settings(:attachment_max_size => 0) do
                    @project = Project.find(1)
                    response = Attachment.attach_files(@project, {
                                                         '1' => {'file' => mock_file, 'description' => 'test'},
                                                         '2' => {'file' => mock_file, 'description' => 'test'}
                                                       })
                    assert response[:unsaved].present?
                    assert_equal 2, response[:unsaved].length
                    assert response[:unsaved].first.new_record?
                    assert response[:unsaved].second.new_record?
                    assert_equal response[:unsaved], @project.unsaved_attachments
                  end
                end
                test "Attachment.attach_files should preserve the content_type of attachments added by token" do
                  @project = Project.find(1)
                  attachment = Attachment.create!(:file => uploaded_test_file("testfile.txt", ""), :author_id => 1, :created_on => 2.days.ago)
                  assert_equal 'text/plain', attachment.content_type
                  Attachment.attach_files(@project, { '1' => {'token' => attachment.token } })
                  attachment.reload
                  assert_equal 'text/plain', attachment.content_type
                end
                def test_update_attachments
                  attachments = Attachment.where(:id => [2, 3]).to_a
                  assert Attachment.update_attachments(attachments, {
                    '2' => {:filename => 'newname.txt', :description => 'New description'},
 => {:filename => 'othername.txt'}
                  })
                  attachment = Attachment.find(2)
                  assert_equal 'newname.txt', attachment.filename
                  assert_equal 'New description', attachment.description
                  attachment = Attachment.find(3)
                  assert_equal 'othername.txt', attachment.filename
                end
                def test_update_attachments_with_failure
                  attachments = Attachment.where(:id => [2, 3]).to_a
                  assert !Attachment.update_attachments(attachments, {
                    '2' => {:filename => '', :description => 'New description'},
 => {:filename => 'othername.txt'}
                  })
                  attachment = Attachment.find(3)
                  assert_equal 'logo.gif', attachment.filename
                end
                def test_update_attachments_should_sanitize_filename
                  attachments = Attachment.where(:id => 2).to_a
                  assert Attachment.update_attachments(attachments, {
 => {:filename => 'newname?.txt'},
                  })
                  attachment = Attachment.find(2)
                  assert_equal 'newname_.txt', attachment.filename
                end
                def test_latest_attach
                  set_fixtures_attachments_directory
                  a1 = Attachment.find(16)
                  assert_equal "testfile.png", a1.filename
                  assert a1.readable?
                  assert (! a1.visible?(User.anonymous))
                  assert a1.visible?(User.find(2))
                  a2 = Attachment.find(17)
                  assert_equal "testfile.PNG", a2.filename
                  assert a2.readable?
                  assert (! a2.visible?(User.anonymous))
                  assert a2.visible?(User.find(2))
                  assert a1.created_on < a2.created_on
                  la1 = Attachment.latest_attach([a1, a2], "testfile.png")
                  assert_equal 17, la1.id
                  la2 = Attachment.latest_attach([a1, a2], "Testfile.PNG")
                  assert_equal 17, la2.id
                  set_tmp_attachments_directory
                end
+               def test_latest_attach_should_not_error_with_string_with_invalid_encoding
+                 string = "width:50\xFE-Image.jpg".force_encoding('UTF-8')
+                 assert_equal false, string.valid_encoding?
+                 Attachment.latest_attach(Attachment.limit(2).to_a, string)
+               end
                def test_thumbnailable_should_be_true_for_images
                  assert_equal true, Attachment.new(:filename => 'test.jpg').thumbnailable?
                end
                def test_thumbnailable_should_be_true_for_non_images
                  assert_equal false, Attachment.new(:filename => 'test.txt').thumbnailable?
                end
                if convert_installed?
                  def test_thumbnail_should_generate_the_thumbnail
                    set_fixtures_attachments_directory
                    attachment = Attachment.find(16)
                    Attachment.clear_thumbnails
                    assert_difference "Dir.glob(File.join(Attachment.thumbnails_storage_path, '*.thumb')).size" do
                      thumbnail = attachment.thumbnail
                      assert_equal "16_8e0294de2441577c529f170b6fb8f638_100.thumb", File.basename(thumbnail)
                      assert File.exists?(thumbnail)
                    end
                  end
                  def test_thumbnail_should_return_nil_if_generation_fails
                    Redmine::Thumbnail.expects(:generate).raises(SystemCallError, 'Something went wrong')
                    set_fixtures_attachments_directory
                    attachment = Attachment.find(16)
                    assert_nil attachment.thumbnail
                  end
                else
                  puts '(ImageMagick convert not available)'
                end
              end

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