Issue #7333: The `posix` module gains an `initgroups()` function providing
access to the initgroups(3) C library call on Unix systems which implement
it. Patch by Jean-Paul Calderone.
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index aaa3841..c6da157 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -5,6 +5,7 @@
# Skip these tests if there is no posix module.
posix = test_support.import_module('posix')
+import errno
import time
import os
import pwd
@@ -83,6 +84,27 @@
new_group_ids = (current_group_ids[0]+1, -1, -1)
self.assertRaises(OSError, posix.setresgid, *new_group_ids)
+ @unittest.skipUnless(hasattr(posix, 'initgroups'),
+ "test needs os.initgroups()")
+ def test_initgroups(self):
+ # It takes a string and an integer; check that it raises a TypeError
+ # for other argument lists.
+ self.assertRaises(TypeError, posix.initgroups)
+ self.assertRaises(TypeError, posix.initgroups, None)
+ self.assertRaises(TypeError, posix.initgroups, 3, "foo")
+ self.assertRaises(TypeError, posix.initgroups, "foo", 3, object())
+
+ # If a non-privileged user invokes it, it should fail with OSError
+ # EPERM.
+ if os.getuid() != 0:
+ name = pwd.getpwuid(posix.getuid()).pw_name
+ try:
+ posix.initgroups(name, 13)
+ except OSError as e:
+ self.assertEquals(e.errno, errno.EPERM)
+ else:
+ self.fail("Expected OSError to be raised by initgroups")
+
def test_statvfs(self):
if hasattr(posix, 'statvfs'):
self.assertTrue(posix.statvfs(os.curdir))