test_simple_bind_fileno_invalid fails on aarch64-darwin

I am building 3.4.8 from source using nix and observe test_simple_bind_fileno_invalid fails only on aarch64-darwin platform. But, otherwise passes on aarch64-linux and x86_64-linux.

Per build history of this package [1], this is a new failure in 3.4.8. Might be related to #623.

...
=================================== FAILURES ===================================
______________ TestLdapCExtension.test_simple_bind_fileno_invalid ______________

self = <Tests.t_cext.TestLdapCExtension testMethod=test_simple_bind_fileno_invalid>

    @requires_init_fd()
    def test_simple_bind_fileno_invalid(self):
        fd = os.open(os.devnull, os.O_RDWR)
        l = _ldap.initialize_fd(fd, self.server.ldap_uri)
        with self.assertRaises(_ldap.SERVER_DOWN):
>           self._bind_conn(l)

Tests/t_cext.py:253:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

    def _bind_conn(self, l):
        # Perform a simple bind
        l.set_option(_ldap.OPT_PROTOCOL_VERSION, _ldap.VERSION3)
        m = l.simple_bind(self.server.root_dn, self.server.root_pw)
>       result, pmsg, msgid, ctrls = l.result4(m, _ldap.MSG_ONE, self.timeout)
                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
E       ldap.SUCCESS: {'result': 0, 'desc': 'Success', 'ctrls': []}

Tests/t_cext.py:115: SUCCESS
=========================== short test summary info ============================
FAILED Tests/t_cext.py::TestLdapCExtension::test_simple_bind_fileno_invalid - ldap.SUCCESS: {'result': 0, 'desc': 'Success', 'ctrls': []}
============= 1 failed, 261 passed, 1 skipped, 1 xfailed in 26.98s =============

[1] https://hydra.nixos.org/job/nixpkgs/unstable/python314Packages.python-ldap.aarch64-darwin

python-ldap: fix build failure `aarch64-darwin`

the reference is likely the cause - nothing else changed regarding this - (I assume you are upgrading from 3.4.7).

Can you confirm that the following would not fail?

diff --git Tests/t_cext.py Tests/t_cext.py
index bc095fa6..504dc74a 100644
--- Tests/t_cext.py
+++ Tests/t_cext.py
@@ -247,7 +247,7 @@ class TestLdapCExtension(SlapdTestCase):
 
     @requires_init_fd()
     def test_simple_bind_fileno_invalid(self):
-        fd = os.open(os.devnull, os.O_RDWR)
+        fd = os.open(os.devnull, os.O_RDONLY)
         l = _ldap.initialize_fd(fd, self.server.ldap_uri)
         with self.assertRaises(_ldap.SERVER_DOWN):
             self._bind_conn(l)

→

@requires_init_fd()
def test_simple_bind_fileno_invalid(self):
    fd = os.open(os.devnull, os.O_RDONLY)
    l = _ldap.initialize_fd(fd, self.server.ldap_uri)
    with self.assertRaises(_ldap.SERVER_DOWN):
        self._bind_conn(l)
    l.unbind_ext()

@spaceone

@spaceone I applied your patch to source and now the test passes on aarch64-darwin. It continues to pass on the *-linux platforms as well.

Appreciate the help!

@mistotebe

Thanks for the feedback. Then we will take that in.

@mistotebe should be fine to have a read-only FD - as it's just a "faked" test.

python-ldap: fix build failure `aarch64-darwin`

python3Packages.python-ldap: fix build failure `aarch64-darwin`

python-ldap: fix build failure `aarch64-darwin`

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spaceone commented on Oct 23, 2026

debtquity commented on Oct 24, 2026

spaceone commented on Oct 24, 2026

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`test_simple_bind_fileno_invalid` fails on `aarch64-darwin` #687