[sqs] weird encoding in message body

[dacevedo12]

I was playing with sqs + event source mapping and found an error on a lambda that works OK with real SQS

turns out, moto formats the message with

moto/moto/sqs/models.py

Line 163 in 3b56583

return escape(self._body).replace('"', """).replace("\r", "
")

which results in message bodies that are not JSON parseable

seems like a pretty old change, do you recall the rationale behind .replace('"', """)?

[bblommers]

This was originally added to fix formatting when receiving messages in SQS (see PR). So it's quite possible that messages are formatted differently on AWS when send to Lambda.

[bpandola]

I actually think this was intended only for XML responses. The XML standard normalizes carriage returns, but apparently (according to #4729) this was not the case for SQS responses from AWS. The fact that #4729 predates #6331 makes me think this was never intended for JSON response bodies.

I'm doing some work now to integrate the SQS backend with Moto's new response serialization pipeline. I think this issue will be resolved once I finish up that work.