I believe this test meant to verify that echoing content to `/dev/null` succeeded, but instead, I believe it was testing the equivalent to `echo 'blah > /dev/null'`.
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Though for non-Rust UIs, we are also working to define a protocol for talking to Codex. See:
You can use the proto subcommand using the executable in the cli crate to speak the protocol using newline-delimited-JSON over stdin/stdout.