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113 lines
4.1 KiB
Python
113 lines
4.1 KiB
Python
"""Tests for network.force_ipv4 — the socket.getaddrinfo monkey-patch."""
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import importlib
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import socket
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def _reload_constants():
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"""Reload hermes_constants to get a fresh apply_ipv4_preference."""
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import hermes_constants
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importlib.reload(hermes_constants)
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return hermes_constants
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class TestApplyIPv4Preference:
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"""Tests for apply_ipv4_preference()."""
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def setup_method(self):
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"""Save the original getaddrinfo before each test."""
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self._original = socket.getaddrinfo
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def teardown_method(self):
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"""Restore the original getaddrinfo after each test."""
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socket.getaddrinfo = self._original
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def test_noop_when_force_false(self):
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"""No patch when force=False."""
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from hermes_constants import apply_ipv4_preference
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original = socket.getaddrinfo
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apply_ipv4_preference(force=False)
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assert socket.getaddrinfo is original
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def test_patches_getaddrinfo_when_forced(self):
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"""Patches socket.getaddrinfo when force=True."""
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from hermes_constants import apply_ipv4_preference
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original = socket.getaddrinfo
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apply_ipv4_preference(force=True)
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assert socket.getaddrinfo is not original
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assert getattr(socket.getaddrinfo, "_hermes_ipv4_patched", False) is True
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def test_double_patch_is_safe(self):
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"""Calling apply twice doesn't double-wrap."""
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from hermes_constants import apply_ipv4_preference
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apply_ipv4_preference(force=True)
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first_patch = socket.getaddrinfo
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apply_ipv4_preference(force=True)
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assert socket.getaddrinfo is first_patch
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def test_af_unspec_becomes_af_inet(self):
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"""AF_UNSPEC (default) calls get rewritten to AF_INET."""
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from hermes_constants import apply_ipv4_preference
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calls = []
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original = socket.getaddrinfo
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def mock_getaddrinfo(host, port, family=0, type=0, proto=0, flags=0):
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calls.append(family)
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return [(socket.AF_INET, socket.SOCK_STREAM, 6, "", ("93.184.216.34", 80))]
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socket.getaddrinfo = mock_getaddrinfo
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apply_ipv4_preference(force=True)
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# Call with default family (AF_UNSPEC = 0)
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socket.getaddrinfo("example.com", 80)
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assert calls[-1] == socket.AF_INET, "AF_UNSPEC should be rewritten to AF_INET"
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def test_explicit_family_preserved(self):
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"""Explicit AF_INET6 requests are not intercepted."""
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from hermes_constants import apply_ipv4_preference
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calls = []
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original = socket.getaddrinfo
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def mock_getaddrinfo(host, port, family=0, type=0, proto=0, flags=0):
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calls.append(family)
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return [(family, socket.SOCK_STREAM, 6, "", ("::1", 80))]
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socket.getaddrinfo = mock_getaddrinfo
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apply_ipv4_preference(force=True)
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socket.getaddrinfo("example.com", 80, family=socket.AF_INET6)
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assert calls[-1] == socket.AF_INET6, "Explicit AF_INET6 should pass through"
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def test_fallback_on_gaierror(self):
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"""Falls back to AF_UNSPEC if AF_INET resolution fails."""
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from hermes_constants import apply_ipv4_preference
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call_families = []
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def mock_getaddrinfo(host, port, family=0, type=0, proto=0, flags=0):
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call_families.append(family)
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if family == socket.AF_INET:
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raise socket.gaierror("No A record")
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# AF_UNSPEC fallback returns IPv6
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return [(socket.AF_INET6, socket.SOCK_STREAM, 6, "", ("::1", 80))]
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socket.getaddrinfo = mock_getaddrinfo
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apply_ipv4_preference(force=True)
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result = socket.getaddrinfo("ipv6only.example.com", 80)
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# Should have tried AF_INET first, then fallen back to AF_UNSPEC
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assert call_families == [socket.AF_INET, 0]
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assert result[0][0] == socket.AF_INET6
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class TestConfigDefault:
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"""Verify network section exists in DEFAULT_CONFIG."""
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def test_network_section_in_default_config(self):
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from hermes_cli.config import DEFAULT_CONFIG
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assert "network" in DEFAULT_CONFIG
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assert DEFAULT_CONFIG["network"]["force_ipv4"] is False
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