In the the tests section, it is said that the below command will be sent
redis-cli XREAD block 0 streams stream_key 0-0
but in reality the ID that will be sent is is 0-1 and not 0-0 (based on redis-tester/internal/test_streams_xread_block_no_timeout.go at main · codecrafters-io/redis-tester · GitHub). This makes more sense as if we block on 0-0 we would immediately return a response as the ID 0-1 has already been inserted before.