when you pass in to read a size greater than the next_read, it just returns the next_read. In a real serial instance on windows, it hangs. Needs testing on linux and mac
🔬 How To Reproduce
Steps to reproduce the behavior:
with real pyserial Serial:
issue a write that will return a read of len n
issue read with some size greater than n
Code sample
s = Serial("Com1")
s.write(b"get -sn\r") # or whatever command you have for your instrument
s.read(1000) # should hang
🐛 Bug Report
when you pass in to read a size greater than the next_read, it just returns the next_read. In a real serial instance on windows, it hangs. Needs testing on linux and mac
🔬 How To Reproduce
Steps to reproduce the behavior:
with real pyserial Serial:
issue a write that will return a read of len n
issue read with some size greater than n
Code sample
s = Serial("Com1") s.write(b"get -sn\r") # or whatever command you have for your instrument s.read(1000) # should hang
now for mock cereal
cereal = Cereal(command_readers=dict("CannedQueries": dict("data": {"get -sn\r": ["1234"]}))) cereal.write(b"get -sn\r") cereal.read(1000) # totally fine
Environment
windows 10 python 3.8, but it is true on all versions of python and OSes