单元测试:断言文件/路径存在 [英] Unit Testing: Assert that a file/path exists

问题描述

我正在尝试为我的安装程序创建回归测试.回归测试是一个用 Python 编写的脚本.该测试检查是否已将正确的文件安装在正确的位置.

I am attempting to create a regression test for my Installer. The regression test is a script written in Python. The test checks that the correct files have been installed in the correct place.

有没有办法断言文件/文件夹存在?我收到以下代码的 AssertionError 错误:

Is there a way to assert that a file/folder exists? I am getting a AssertionError error for the following code:

assert os.path.exists(LOCAL_INSTALL_DIR) == 1

为什么我会收到这个错误，我该如何解决?我的功能:

Why am I getting this error and how can I fix it? My function:

def check_installation_files_exist():
    assert os.path.exists(LOCAL_INSTALL_DIR) == 1
    assert os.path.exists(INSTALL_DIR) == 1
    correct_install_files = normalise_file_names( os.listdir( LOCAL_INSTALL_DIR ) )
    installed_files       = normalise_file_names( os.listdir( INSTALL_DIR ) )

推荐答案

LOCAL_INSTALL_DIR 描述的路径要么不存在，要么是损坏的符号链接，要么你没有的权限stat() 它.

The path described by LOCAL_INSTALL_DIR either does not exist, is a broken symbolic link, or you do not have permission to stat() it.

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