Question

我需要能够模拟Popen，但是堆栈溢出的所有示例似乎都不适合我。我尝试了建议here，但它不断引发异常：

Traceback (most recent call last):

File "/Users/me/workspace/workdir/src/mymodule/transferfile.py", line 23, in sftp
p = Popen(cmd, shell=False, stdin=PIPE, stdout=PIPE, stderr=PIPE)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)

File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1335, in _execute_child
raise child_exception

E           OSError: [Errno 9] Bad file descriptor

文件：mymodule / transfer.py：

from subprocess import PIPE, Popen

def sftp(cmdstr):
    cmd = ["sftp", "-b", "-", "stfp_server"]
    p = Popen(cmd, shell=False, stdin=PIPE, stdout=PIPE, stderr=PIPE)
    if p.returncode is None:
        stdout, stderr = p.communicate(cmdstr)

测试文件：

def test_sftp(mocker):
    # Attempt 1
    mocker.patch('mymodule.Popen.communicate', autospec=True)
    mocker.patch('mymodule.Popen', autospec=True)
    mocker.patch('mymodule.PIPE', autospec=True)

    # Attempt 2
    mocker.patch('subprocess.Popen.communicate', autospec=True)
    mocker.patch('subprocess.Popen', autospec=True)
    mocker.patch('subprocess.PIPE', autospec=True)

    cmdstr = "ls"

    mymodule.sftp(cmdstr)

模拟Popen失败，出现异常

0 个答案: