diff options
Diffstat (limited to 'Lib/test/test_support.py')
| -rw-r--r-- | Lib/test/test_support.py | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py index e06f7b8..36d5f84 100644 --- a/Lib/test/test_support.py +++ b/Lib/test/test_support.py @@ -9,9 +9,11 @@ import stat import subprocess import sys import tempfile +import textwrap import time import unittest from test import support +from test.support import script_helper TESTFN = support.TESTFN @@ -165,6 +167,33 @@ class TestSupport(unittest.TestCase): f'temporary directory {path!r}: '), warn) + @unittest.skipUnless(hasattr(os, "fork"), "test requires os.fork") + def test_temp_dir__forked_child(self): + """Test that a forked child process does not remove the directory.""" + # See bpo-30028 for details. + # Run the test as an external script, because it uses fork. + script_helper.assert_python_ok("-c", textwrap.dedent(""" + import os + from test import support + with support.temp_cwd() as temp_path: + pid = os.fork() + if pid != 0: + # parent process (child has pid == 0) + + # wait for the child to terminate + (pid, status) = os.waitpid(pid, 0) + if status != 0: + raise AssertionError(f"Child process failed with exit " + f"status indication 0x{status:x}.") + + # Make sure that temp_path is still present. When the child + # process leaves the 'temp_cwd'-context, the __exit__()- + # method of the context must not remove the temporary + # directory. + if not os.path.isdir(temp_path): + raise AssertionError("Child removed temp_path.") + """)) + # Tests for change_cwd() def test_change_cwd(self): |