Force attachment filenames to utf-8 before trying to save them

In a database with encoding SQL-ASCII, an invalid utf-8 filename
can be saved but will cause an "invalid byte sequence in UTF-8"
when the filename is prepared for display. In a database with a
UTF-8 encoding, saving the string will cause an error like
"ActiveRecord::StatementInvalid (PG::Error: ERROR: invalid byte
sequence for encoding "UTF8""

1 files changed, 9 insertions, 0 deletions

diff --git a/spec/lib/mail_handler/backends/mail_backend_spec.rb b/spec/lib/mail_handler/backends/mail_backend_spec.rb
index 588033faf..895160670 100644
--- a/spec/lib/mail_handler/backends/mail_backend_spec.rb
+++ b/spec/lib/mail_handler/backends/mail_backend_spec.rb
@@ -37,6 +37,15 @@ describe MailHandler::Backends::MailBackend do
             get_part_file_name(part).should be_nil
         end
 
+        it 'turns an invalid UTF-8 name into a valid one' do
+            mail = get_fixture_mail('non-utf8-filename.email')
+            part = mail.attachments.first
+            filename = get_part_file_name(part)
+            if filename.respond_to?(:valid_encoding)
+               filename.valid_encoding?.should == true
+            end
+        end
+
     end
 
     describe :get_part_body do