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test-driver.py: fix decoding of VM output

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The codec format 'unicode_escape' was introduced in 52ee102 to handle
undecodable bytes in boot menus.

This made the problem worse as unicode chars outside of iso-8859-1
produce garbled output and valid utf-8 strings (such as "\x" ) trigger
decoding errors.

Fix this by using the default 'utf-8' codec and by explicitly ignoring
decoding errors.
This commit is contained in:
Erik Arvstedt 2020-01-14 19:18:17 +01:00 committed by Jon
parent caa435fd1d
commit 5bdb653baf
1 changed files with 2 additions and 1 deletions
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nixos/lib/test-driver/test-driver.py
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@ -704,7 +704,8 @@ class Machine:
def process_serial_output() -> None:
for _line in self.process.stdout:
line = _line.decode("unicode_escape").replace("\r", "").rstrip()
# Ignore undecodable bytes that may occur in boot menus
line = _line.decode(errors="ignore").replace("\r", "").rstrip()
eprint("{} # {}".format(self.name, line))
self.logger.enqueue({"msg": line, "machine": self.name})