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iotests.py: Add qemu_img_pipe_and_status()

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This function will be used by the next patch, which intends to check
both the exit code and qemu-img's output.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200625125548.870061-5-mreitz@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
[mreitz: Rebased on 49438972b8c2e]
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2020-06-25 14:55:33 +02:00
parent dc4ab02919
commit d849acab41
1 changed files with 20 additions and 20 deletions
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40
tests/qemu-iotests/iotests.py
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@ -29,7 +29,7 @@ import struct
import subprocess
import sys
from typing import (Any, Callable, Dict, Iterable,
List, Optional, Sequence, TypeVar)
List, Optional, Sequence, Tuple, TypeVar)
import unittest
# pylint: disable=import-error, wrong-import-position
@ -90,15 +90,24 @@ luks_default_secret_object = 'secret,id=keysec0,data=' + \
luks_default_key_secret_opt = 'key-secret=keysec0'
def qemu_img(*args):
'''Run qemu-img and return the exit code'''
devnull = open('/dev/null', 'r+')
exitcode = subprocess.call(qemu_img_args + list(args),
stdin=devnull, stdout=devnull)
if exitcode < 0:
def qemu_img_pipe_and_status(*args: str) -> Tuple[str, int]:
"""
Run qemu-img and return both its output and its exit code
"""
subp = subprocess.Popen(qemu_img_args + list(args),
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
output = subp.communicate()[0]
if subp.returncode < 0:
sys.stderr.write('qemu-img received signal %i: %s\n'
% (-exitcode, ' '.join(qemu_img_args + list(args))))
return exitcode
% (-subp.returncode,
' '.join(qemu_img_args + list(args))))
return (output, subp.returncode)
def qemu_img(*args: str) -> int:
'''Run qemu-img and return the exit code'''
return qemu_img_pipe_and_status(*args)[1]
def ordered_qmp(qmsg, conv_keys=True):
# Dictionaries are not ordered prior to 3.6, therefore:
@ -140,18 +149,9 @@ def qemu_img_verbose(*args):
% (-exitcode, ' '.join(qemu_img_args + list(args))))
return exitcode
def qemu_img_pipe(*args):
def qemu_img_pipe(*args: str) -> str:
'''Run qemu-img and return its output'''
subp = subprocess.Popen(qemu_img_args + list(args),
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
output = subp.communicate()[0]
if subp.returncode < 0:
sys.stderr.write('qemu-img received signal %i: %s\n'
% (-subp.returncode,
' '.join(qemu_img_args + list(args))))
return output
return qemu_img_pipe_and_status(*args)[0]
def qemu_img_log(*args):
result = qemu_img_pipe(*args)