+
+ def test_length_oversize
+ assert_raise(ActiveRecord::RecordInvalid) { make_message('c', 256).save! }
+ assert_raise(ActiveRecord::RecordInvalid) { make_message(EURO, 256).save! }
+ end
+
+ def test_invalid_utf8
+ # See e.g http://en.wikipedia.org/wiki/UTF-8 for byte sequences
+ # FIXME - Invalid Unicode characters can still be encoded into "valid" utf-8 byte sequences - maybe check this too?
+ invalid_sequences = ["\xC0", # always invalid utf8
+ "\xC2\x4a", # 2-byte multibyte identifier, followed by plain ASCII
+ "\xC2\xC2", # 2-byte multibyte identifier, followed by another one
+ "\x4a\x82", # plain ASCII, followed by multibyte continuation
+ "\x82\x82", # multibyte continuations without multibyte identifier
+ "\xe1\x82\x4a", # three-byte identifier, contination and (incorrectly) plain ASCII
+ ]
+ invalid_sequences.each do |char|
+ assert_raise(ActiveRecord::RecordInvalid) { make_message(char, 1).save! }
+ end
+ end
+
+ def make_message(char, count)
+ message = messages(:one)
+ message.title = char * count
+ return message
+ end
+
+ def assert_message_ok(char, count)
+ message = make_message(char, count)
+ assert message.save!
+ response = message.class.find(message.id) # stand by for some über-generalisation...
+ assert_equal char * count, response.title, "message with #{count} #{char} chars (i.e. #{char.length*count} bytes) fails"
+ end
+