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test(line): skip dual-stack both-families assertion on IPv4-only hosts

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test_default_bind_serves_both_families asserts an IPv6 listening socket
exists, which is the environment's capability, not the adapter's — CI
runners with IPv6 disabled would flake. Probe an actual ::1 bind (not
just socket.has_ipv6, a compile-time constant) and skip cleanly when
the host has no usable IPv6 stack.
This commit is contained in:
Teknium 2026-07-28 21:59:06 -07:00
parent e24bb0b42f
commit cf1e3585b6
1 changed files with 15 additions and 0 deletions
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15
tests/gateway/test_line_plugin.py
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@ -804,6 +804,21 @@ class TestDualStackBind:
@pytest.mark.asyncio
async def test_default_bind_serves_both_families(self, monkeypatch):
"""Behavioural proof: host=None opens v4 AND v6 listening sockets."""
# Guard: on IPv4-only hosts (CI runners with IPv6 disabled) the
# dual-stack bind legitimately yields no v6 socket — that's the
# environment, not a regression. Probe an actual ::1 bind rather
# than trusting socket.has_ipv6 (compile-time constant).
import socket as _socket
if not _socket.has_ipv6:
pytest.skip("IPv6 not supported by this Python build")
try:
_probe = _socket.socket(_socket.AF_INET6, _socket.SOCK_STREAM)
try:
_probe.bind(("::1", 0))
finally:
_probe.close()
except OSError:
pytest.skip("IPv6 stack unavailable on this host (cannot bind ::1)")
monkeypatch.delenv("LINE_HOST", raising=False)
ad = LineAdapter(self._cfg(port=0))
ad._client = MagicMock()