110 lines
3.7 KiB
Python
110 lines
3.7 KiB
Python
|
"""Tests for TunnelManager."""
|
||
|
|
import os
|
||
|
|
import signal
|
||
|
|
import time
|
||
|
|
from pathlib import Path
|
||
|
|
from unittest.mock import MagicMock, patch, call
|
||
|
|
|
||
|
|
import pytest
|
||
|
|
|
||
|
|
from bridge.models import BridgeState, ReconnectPolicy, TunnelConfig
|
||
|
|
from bridge.manager import TunnelManager, build_ssh_command
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.fixture
|
||
|
|
def tunnel_cfg():
|
||
|
|
return TunnelConfig(
|
||
|
|
name="test-tunnel",
|
||
|
|
host="host.local",
|
||
|
|
remote_port=18000,
|
||
|
|
local_port=8000,
|
||
|
|
ssh_user="ubuntu",
|
||
|
|
ssh_key="~/.ssh/id_ops",
|
||
|
|
actor="operator.bernd",
|
||
|
|
reconnect=ReconnectPolicy(max_attempts=3, backoff_initial=1, backoff_max=5),
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.fixture
|
||
|
|
def state_dir(tmp_path):
|
||
|
|
return tmp_path / "bridge"
|
||
|
|
|
||
|
|
|
||
|
|
class TestBuildSshCommand:
|
||
|
|
def test_basic_command(self, tunnel_cfg):
|
||
|
|
cmd = build_ssh_command(tunnel_cfg)
|
||
|
|
assert cmd[0] == "ssh"
|
||
|
|
assert "-N" in cmd
|
||
|
|
assert "-R" in cmd
|
||
|
|
assert "18000:127.0.0.1:8000" in cmd
|
||
|
|
assert "-i" in cmd
|
||
|
|
assert "ubuntu@host.local" in cmd
|
||
|
|
|
||
|
|
def test_server_alive_options(self, tunnel_cfg):
|
||
|
|
cmd = build_ssh_command(tunnel_cfg)
|
||
|
|
assert "-o" in cmd
|
||
|
|
assert "ServerAliveInterval=10" in cmd
|
||
|
|
assert "ExitOnForwardFailure=yes" in cmd
|
||
|
|
|
||
|
|
def test_ssh_key_expanded(self, tunnel_cfg):
|
||
|
|
cmd = build_ssh_command(tunnel_cfg)
|
||
|
|
key_idx = cmd.index("-i") + 1
|
||
|
|
assert not cmd[key_idx].startswith("~")
|
||
|
|
|
||
|
|
|
||
|
|
class TestTunnelManager:
|
||
|
|
def test_get_state_initial(self, tunnel_cfg, state_dir):
|
||
|
|
mgr = TunnelManager(tunnel_cfg, state_dir=state_dir)
|
||
|
|
assert mgr.get_state() == BridgeState.STOPPED
|
||
|
|
|
||
|
|
def test_stop_when_not_running_is_noop(self, tunnel_cfg, state_dir):
|
||
|
|
mgr = TunnelManager(tunnel_cfg, state_dir=state_dir)
|
||
|
|
# Should not raise
|
||
|
|
mgr.stop()
|
||
|
|
assert mgr.get_state() == BridgeState.STOPPED
|
||
|
|
|
||
|
|
def test_stop_kills_pid(self, tunnel_cfg, state_dir):
|
||
|
|
mgr = TunnelManager(tunnel_cfg, state_dir=state_dir)
|
||
|
|
# Write a fake PID of our own process to simulate running
|
||
|
|
mgr._state.write_pid(tunnel_cfg.name, os.getpid())
|
||
|
|
mgr._state.write_state(tunnel_cfg.name, BridgeState.CONNECTED)
|
||
|
|
|
||
|
|
with patch("os.kill") as mock_kill:
|
||
|
|
mgr.stop()
|
||
|
|
|
||
|
|
# Should have sent SIGTERM
|
||
|
|
mock_kill.assert_any_call(os.getpid(), signal.SIGTERM)
|
||
|
|
assert mgr.get_state() == BridgeState.STOPPED
|
||
|
|
|
||
|
|
def test_backoff_calculation(self, tunnel_cfg, state_dir):
|
||
|
|
mgr = TunnelManager(tunnel_cfg, state_dir=state_dir)
|
||
|
|
# First backoff = initial
|
||
|
|
assert mgr._next_backoff(0) == 1
|
||
|
|
# Doubles each time up to max
|
||
|
|
assert mgr._next_backoff(1) == 2
|
||
|
|
assert mgr._next_backoff(2) == 4
|
||
|
|
assert mgr._next_backoff(3) == 5 # capped at max
|
||
|
|
|
||
|
|
def test_start_daemonizes(self, tunnel_cfg, state_dir):
|
||
|
|
"""Verify start() forks without hanging."""
|
||
|
|
mgr = TunnelManager(tunnel_cfg, state_dir=state_dir)
|
||
|
|
|
||
|
|
# We can't actually fork in tests; verify state transitions via mock
|
||
|
|
with patch("subprocess.Popen") as mock_popen, \
|
||
|
|
patch("os.fork", return_value=1234) as mock_fork, \
|
||
|
|
patch("os.setsid"), \
|
||
|
|
patch("os._exit"):
|
||
|
|
mock_proc = MagicMock()
|
||
|
|
mock_proc.pid = 9999
|
||
|
|
mock_popen.return_value = mock_proc
|
||
|
|
|
||
|
|
# When fork returns non-zero we're the parent — just check PID written
|
||
|
|
mgr.start()
|
||
|
|
|
||
|
|
# After start the state should be STARTING (set before fork)
|
||
|
|
# and PID file should exist (written in parent branch)
|
||
|
|
|
||
|
|
def test_is_running_false_initially(self, tunnel_cfg, state_dir):
|
||
|
|
mgr = TunnelManager(tunnel_cfg, state_dir=state_dir)
|
||
|
|
assert not mgr.is_running()
|