Commit ce0f92dc authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

selftests: net: py: teach cmd() how to print itself 



Teach cmd() how to print itself, to make debug prints easier.
Example output (leading # due to ksft_pr()):

  # CMD: /root/ksft-net-drv/drivers/net/gro
  #   EXIT: 1
  #   STDOUT: ipv6 with ext header does coalesce:
  #   STDERR: Expected {200 }, Total 1 packets
  #           Received {100 [!=200]100 [!=0]}, Total 2 packets.

Reviewed-by: default avatarPetr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20260113000740.255360-3-kuba@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent b324192e

tools/testing/selftests/net/lib/py/utils.py

+23 −0
Original line number Diff line number Diff line
@@ -41,7 +41,9 @@ class cmd: 
        self.ret = None

        self.ksft_term_fd = None



        self.host = host

        self.comm = comm



        if host:

            self.proc = host.cmd(comm)

        else:
@@ -99,6 +101,27 @@ class cmd: 
            raise CmdExitFailure("Command failed: %s\nSTDOUT: %s\nSTDERR: %s" %

                                 (self.proc.args, stdout, stderr), self)



    def __repr__(self):

        def str_fmt(name, s):

            name += ': '

            return (name + s.strip().replace('\n', '\n' + ' ' * len(name)))



        ret = "CMD"

        if self.host:

            ret += "[remote]"

        if self.ret is None:

            ret += f" (unterminated): {self.comm}\n"

        elif self.ret == 0:

            ret += f" (success): {self.comm}\n"

        else:

            ret += f": {self.comm}\n"

            ret += f"  EXIT: {self.ret}\n"

        if self.stdout:

            ret += str_fmt("  STDOUT", self.stdout) + "\n"

        if self.stderr:

            ret += str_fmt("  STDERR", self.stderr) + "\n"

        return ret.strip()





class bkg(cmd):

    """