test: add integration tests for full tunnel lifecycle

tests/integration/test_lifecycle.py

@@ -2,10 +2,11 @@ import os
 import signal
 import time
 import pytest
+from datetime import datetime, timezone
 from click.testing import CliRunner
 from autossh_mgr.cli import cli
 from autossh_mgr.config import save_tunnels, TunnelConfig, ensure_dirs
-from autossh_mgr.process import read_pid_file, is_process_alive
+from autossh_mgr.process import read_pid_file, is_process_alive, write_pid_file
 
 
 @pytest.fixture
@@ -29,6 +30,22 @@ def set_config_dir(config_dir, monkeypatch):
     monkeypatch.setenv("AUTOSSH_MGR_CONFIG_DIR", str(config_dir))
 
 
+@pytest.fixture(autouse=True)
+def cleanup_processes(config_dir):
+    """Kill any processes recorded in PID files after each test."""
+    yield
+    pids_dir = config_dir / "pids"
+    if not pids_dir.exists():
+        return
+    for pid_file in pids_dir.glob("*.pid"):
+        try:
+            lines = pid_file.read_text().splitlines()
+            if lines:
+                os.kill(int(lines[0]), signal.SIGKILL)
+        except (ValueError, OSError, ProcessLookupError):
+            pass
+
+
 @pytest.fixture
 def tunnel(config_dir):
     t = TunnelConfig(
@@ -52,10 +69,8 @@ def test_start_writes_pid_file(runner, config_dir, tunnel, fake_autossh):
     assert result.exit_code == 0, result.output
     pid_data = read_pid_file(config_dir, "test-tunnel")
     assert pid_data is not None
-    pid, started_at = pid_data
+    pid, _ = pid_data
     assert is_process_alive(pid)
-    # cleanup
-    os.kill(pid, signal.SIGKILL)
 
 
 def test_stop_kills_process(runner, config_dir, tunnel, fake_autossh):
@@ -78,14 +93,8 @@ def test_status_shows_running(runner, config_dir, tunnel, fake_autossh):
     assert result.exit_code == 0
     assert "running" in result.output
 
-    pid_data = read_pid_file(config_dir, "test-tunnel")
-    if pid_data:
-        os.kill(pid_data[0], signal.SIGKILL)
-
 
 def test_stale_pid_cleaned_on_start(runner, config_dir, tunnel, fake_autossh):
-    from autossh_mgr.process import write_pid_file
-    from datetime import datetime, timezone
     write_pid_file(config_dir, "test-tunnel", 9999999, datetime.now(timezone.utc))
 
     result = runner.invoke(cli, ["start", "test-tunnel"])
@@ -96,8 +105,6 @@ def test_stale_pid_cleaned_on_start(runner, config_dir, tunnel, fake_autossh):
     assert pid_data is not None
     assert pid_data[0] != 9999999
 
-    os.kill(pid_data[0], signal.SIGKILL)
-
 
 def test_restart(runner, config_dir, tunnel, fake_autossh):
     runner.invoke(cli, ["start", "test-tunnel"])
@@ -109,8 +116,7 @@ def test_restart(runner, config_dir, tunnel, fake_autossh):
     second_pid = read_pid_file(config_dir, "test-tunnel")[0]
     assert second_pid != first_pid
     assert is_process_alive(second_pid)
-
-    os.kill(second_pid, signal.SIGKILL)
+    assert not is_process_alive(first_pid)
 
 
 def test_idempotent_start(runner, config_dir, tunnel, fake_autossh):
@@ -122,8 +128,6 @@ def test_idempotent_start(runner, config_dir, tunnel, fake_autossh):
     assert "already running" in result.output
     assert read_pid_file(config_dir, "test-tunnel")[0] == first_pid
 
-    os.kill(first_pid, signal.SIGKILL)
-
 
 def test_idempotent_stop(runner, tunnel):
     result = runner.invoke(cli, ["stop", "test-tunnel"])