Redmine

    extension = extension.downcase.sub(/\A\.+/, '')

    unless extensions.is_a?(Array)

    end

    extensions = extensions.map {|s| s.downcase.sub(/\A\.+/, '')}.reject(&:blank?)

    extensions.include?(extension)

  # Returns false if the +attachment+ of the incoming email should be ignored

  def accept_attachment?(attachment)

    @excluded.each do |pattern|

      if Setting.mail_handler_enable_regex_excluded_filenames?

        regexp = %r{\A#{pattern}\z}i

  end

  def test_extension_should_be_validated_against_denied_extensions

      a = Attachment.new(:container => Issue.find(1),

                         :file => mock_file_with_options(:original_filename => "test.jpeg"),

                         :author => User.find(1))

  end

  def test_valid_extension_should_be_case_insensitive

      assert Attachment.valid_extension?(".pnG")

      assert !Attachment.valid_extension?(".jpeg")

    end

      assert !Attachment.valid_extension?(".pnG")

      assert Attachment.valid_extension?(".jpeg")

    end

  end

  def test_attachments_that_match_mail_handler_excluded_filenames_should_be_ignored

      issue = submit_email('ticket_with_attachment.eml', :issue => {:project => 'onlinestore'})

      assert issue.is_a?(Issue)

      assert !issue.new_record?

  end

  def test_attachments_that_match_mail_handler_excluded_filenames_by_regex_should_be_ignored

                  :mail_handler_enable_regex_excluded_filenames => 1 do

      issue = submit_email('ticket_with_attachment.eml', :issue => {:project => 'onlinestore'})

      assert issue.is_a?(Issue)