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Add main CLI entry point and full test suite

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- bigbrother.py: Click CLI with start/stop/status/activate/deactivate/
  kill/config/selftest/modules commands plus Rich interactive menu.
  Module discovery scans modules/stealth/ for BaseModule subclasses.
  Supports --daemon mode with PID file and --passive-only flag.
- tests/conftest.py: Shared fixtures (tmp_dir, mock_config, mock_bus,
  mock_state, hardware_tier_override, project_root)
- tests/test_bus.py: 6 tests for EventBus pub/sub, filtering, wildcards
- tests/test_engine.py: 5 tests for Engine lifecycle, deps, tier, phase
- tests/test_crypto.py: 5 tests for AES-256-GCM, file encryption, KDF
- tests/test_resource.py: 7 tests for hardware detection, memory, disk
- tests/test_tool_manager.py: 6 tests for subprocess management
- tests/test_stealth_modules.py: 4 parametrized test classes covering
  all 12 stealth modules (import, inheritance, attributes, instantiation)
This commit is contained in:
n0mad1k
2026-03-18 09:48:23 -04:00
parent 6caf1a15ca
commit 3394c72814
9 changed files with 1516 additions and 0 deletions
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tests/.gitkeep → tests/__init__.py
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tests/conftest.py
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"""Shared pytest fixtures for BigBrother tests."""
import os
import sys
import tempfile
from pathlib import Path
from unittest.mock import patch
import pytest
# ---------------------------------------------------------------------------
# Ensure project root is on sys.path
# ---------------------------------------------------------------------------
PROJECT_ROOT = str(Path(__file__).resolve().parent.parent)
if PROJECT_ROOT not in sys.path:
sys.path.insert(0, PROJECT_ROOT)
@pytest.fixture
def project_root():
"""Return the project root directory and ensure it is on sys.path."""
return PROJECT_ROOT
@pytest.fixture
def tmp_dir(tmp_path):
"""Provide a temporary directory for test artifacts."""
return str(tmp_path)
@pytest.fixture
def mock_config():
"""Return a valid BigBrother config dict (no YAML file needed)."""
return {
"device": {
"platform": "generic",
"hostname": "test-device",
"install_path": "/tmp/bb-test",
},
"network": {
"primary_interface": "eth0",
"scope_enforcement": False,
},
"connectivity": {
"primary": "wireguard",
},
"security": {
"encryption": "aes-256-gcm",
"encryption_key_derive": "argon2id",
"kill_switch_enabled": True,
},
"capture": {
"interface": "eth0",
"snap_length": 65535,
"pcap_rotation_hours": 1,
"pcap_compression": "zstd",
"pcap_compression_level": 19,
},
"stealth": {
"mac_profile": "auto",
"process_disguise": True,
"log_suppression": True,
},
"engagement_phase": {
"mode": "passive_only",
"passive_days": 7,
},
"bettercap": {
"binary": "/usr/local/bin/bettercap",
"api_address": "127.0.0.1",
"api_port": 8083,
},
"storage_path": "/tmp/bb-test/storage",
}
@pytest.fixture
def mock_bus():
"""Return a started EventBus instance. Stopped after test."""
from core.bus import EventBus
bus = EventBus()
bus.start()
yield bus
bus.stop()
@pytest.fixture
def mock_state(tmp_path):
"""Return a StateManager backed by a temp SQLite database. Stopped after test."""
from core.state import StateManager
db_path = str(tmp_path / "test_state.db")
state = StateManager(db_path=db_path)
state.start()
yield state
state.stop()
@pytest.fixture
def hardware_tier_override():
"""Context manager fixture to patch detect_hardware_tier to return a specific tier.
Usage:
def test_foo(hardware_tier_override):
with hardware_tier_override("pi_zero"):
...
"""
from contextlib import contextmanager
@contextmanager
def _override(tier: str):
with patch("core.engine.detect_hardware_tier", return_value=tier):
yield
return _override
tests/test_bus.py
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"""Tests for core.bus — EventBus pub/sub system."""
import time
import threading
import pytest
from core.bus import EventBus, Event
class TestEventBus:
def test_subscribe_and_publish(self, mock_bus):
"""A subscriber receives an event that was published."""
received = []
def handler(event):
received.append(event)
mock_bus.subscribe(handler, event_type="HOST_DISCOVERED")
mock_bus.publish(Event(
event_type="HOST_DISCOVERED",
payload={"ip": "10.0.0.1"},
source_module="test",
))
# Wait for dispatch
deadline = time.time() + 3.0
while not received and time.time() < deadline:
time.sleep(0.05)
assert len(received) == 1
assert received[0].event_type == "HOST_DISCOVERED"
assert received[0].payload["ip"] == "10.0.0.1"
def test_publish_no_subscribers(self, mock_bus):
"""Publishing with no subscribers does not raise an error."""
mock_bus.publish(Event(
event_type="CREDENTIAL_FOUND",
payload={"user": "admin"},
source_module="test",
))
# Give the dispatcher a moment to process
time.sleep(0.2)
# No crash = pass
def test_multiple_subscribers(self, mock_bus):
"""Multiple subscribers for the same event type all receive the event."""
results_a = []
results_b = []
mock_bus.subscribe(lambda e: results_a.append(e), event_type="PCAP_ROTATED")
mock_bus.subscribe(lambda e: results_b.append(e), event_type="PCAP_ROTATED")
mock_bus.publish(Event(
event_type="PCAP_ROTATED",
payload={"file": "/tmp/test.pcap"},
source_module="test",
))
deadline = time.time() + 3.0
while (not results_a or not results_b) and time.time() < deadline:
time.sleep(0.05)
assert len(results_a) == 1
assert len(results_b) == 1
def test_event_type_filtering(self, mock_bus):
"""A subscriber only receives events matching its registered type."""
received = []
mock_bus.subscribe(lambda e: received.append(e), event_type="CREDENTIAL_FOUND")
# Publish a different event type
mock_bus.publish(Event(
event_type="HOST_DISCOVERED",
payload={"ip": "10.0.0.2"},
source_module="test",
))
# And the matching type
mock_bus.publish(Event(
event_type="CREDENTIAL_FOUND",
payload={"user": "root"},
source_module="test",
))
deadline = time.time() + 3.0
while len(received) < 1 and time.time() < deadline:
time.sleep(0.05)
# Allow a little extra time for any misdelivered events
time.sleep(0.2)
assert len(received) == 1
assert received[0].event_type == "CREDENTIAL_FOUND"
def test_wildcard_subscriber(self, mock_bus):
"""A wildcard subscriber (event_type=None) receives all events."""
received = []
mock_bus.subscribe(lambda e: received.append(e), event_type=None)
mock_bus.publish(Event(event_type="HOST_DISCOVERED", payload={}, source_module="test"))
mock_bus.publish(Event(event_type="CREDENTIAL_FOUND", payload={}, source_module="test"))
deadline = time.time() + 3.0
while len(received) < 2 and time.time() < deadline:
time.sleep(0.05)
assert len(received) == 2
types = {e.event_type for e in received}
assert "HOST_DISCOVERED" in types
assert "CREDENTIAL_FOUND" in types
def test_event_dataclass(self):
"""Event dataclass fields and to_dict() work correctly."""
before = time.time()
event = Event(
event_type="MODULE_STARTED",
payload={"module": "dns_logger", "pid": 1234},
source_module="engine",
)
after = time.time()
assert event.event_type == "MODULE_STARTED"
assert event.payload["module"] == "dns_logger"
assert event.source_module == "engine"
assert before <= event.timestamp <= after
d = event.to_dict()
assert isinstance(d, dict)
assert d["event_type"] == "MODULE_STARTED"
assert d["payload"]["pid"] == 1234
tests/test_crypto.py
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"""Tests for utils.crypto — AES-256-GCM encryption and key derivation."""
import os
import tempfile
import pytest
from utils.crypto import (
CryptoEngine,
KEY_SIZE,
NONCE_SIZE,
derive_key,
encrypt_file,
decrypt_file,
HAS_ARGON2,
)
class TestCryptoEngine:
def test_encrypt_decrypt_roundtrip(self):
"""Encrypt then decrypt returns the original plaintext."""
key = os.urandom(KEY_SIZE)
engine = CryptoEngine(key)
plaintext = b"Sensitive credential data: admin:p@ssw0rd!"
ciphertext = engine.encrypt(plaintext)
# Ciphertext should differ from plaintext
assert ciphertext != plaintext
# Should include nonce prefix
assert len(ciphertext) > len(plaintext)
decrypted = engine.decrypt(ciphertext)
assert decrypted == plaintext
def test_encrypt_file_decrypt_file(self, tmp_path):
"""encrypt_file() and decrypt_file() round-trip a file correctly."""
src = str(tmp_path / "source.bin")
enc = str(tmp_path / "encrypted.bb")
dec = str(tmp_path / "decrypted.bin")
original_data = os.urandom(4096)
with open(src, "wb") as f:
f.write(original_data)
password = b"test-passphrase-42"
# Use pbkdf2 to avoid argon2 dependency issues
encrypt_file(src, enc, password, method="pbkdf2")
decrypt_file(enc, dec, password, method="pbkdf2")
with open(dec, "rb") as f:
recovered = f.read()
assert recovered == original_data
def test_different_keys_fail(self):
"""Decrypting with a different key raises an error."""
key1 = os.urandom(KEY_SIZE)
key2 = os.urandom(KEY_SIZE)
engine1 = CryptoEngine(key1)
engine2 = CryptoEngine(key2)
plaintext = b"secret data"
ciphertext = engine1.encrypt(plaintext)
with pytest.raises(Exception):
engine2.decrypt(ciphertext)
def test_key_derivation_argon2(self):
"""derive_key with argon2id returns a 32-byte key (or falls back to pbkdf2)."""
password = b"my-strong-password"
salt = os.urandom(16)
key = derive_key(password, salt, method="argon2id")
assert isinstance(key, bytes)
assert len(key) == KEY_SIZE
# Same inputs produce the same key
key2 = derive_key(password, salt, method="argon2id")
assert key == key2
# Different salt produces a different key
salt2 = os.urandom(16)
key3 = derive_key(password, salt2, method="argon2id")
assert key3 != key
def test_key_derivation_pbkdf2(self):
"""derive_key with pbkdf2 returns a 32-byte key."""
password = b"another-password"
salt = os.urandom(16)
key = derive_key(password, salt, method="pbkdf2")
assert isinstance(key, bytes)
assert len(key) == KEY_SIZE
# Same inputs produce the same key
key2 = derive_key(password, salt, method="pbkdf2")
assert key == key2
# Different password produces a different key
key3 = derive_key(b"different-password", salt, method="pbkdf2")
assert key3 != key
tests/test_engine.py
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"""Tests for core.engine — Module lifecycle manager."""
import time
from unittest.mock import patch, MagicMock
import pytest
from core.engine import Engine, HARDWARE_TIERS, _topo_sort, ModuleEntry
from core.bus import EventBus
from core.state import StateManager
from modules.base import BaseModule
# ---------------------------------------------------------------------------
# Mock module for testing
# ---------------------------------------------------------------------------
class MockModule(BaseModule):
"""Minimal BaseModule subclass for testing."""
name = "mock_module"
module_type = "passive"
priority = 100
dependencies = []
requires_root = False
def start(self):
self._running = True
import os, time as _t
self._pid = os.getpid()
self._start_time = _t.time()
# Block to keep the process alive
import signal
signal.pause()
def stop(self):
self._running = False
def status(self):
return {"running": self._running, "pid": self._pid}
def configure(self, config):
self.config.update(config)
class MockActiveModule(BaseModule):
"""Active module for phase-gating tests."""
name = "mock_active"
module_type = "active"
priority = 200
dependencies = []
requires_root = False
def start(self):
self._running = True
def stop(self):
self._running = False
def status(self):
return {"running": self._running}
def configure(self, config):
pass
class MockDepModule(BaseModule):
"""Module that depends on mock_module."""
name = "mock_dep"
module_type = "passive"
priority = 150
dependencies = ["mock_module"]
requires_root = False
def start(self):
self._running = True
def stop(self):
self._running = False
def status(self):
return {"running": self._running}
def configure(self, config):
pass
class TestEngine:
def test_load_module(self, mock_bus, mock_state, mock_config):
"""Engine.register() adds a module to the registry."""
engine = Engine(bus=mock_bus, state=mock_state, config=mock_config)
engine.register(MockModule, config={"test": True})
assert "mock_module" in engine._modules
assert engine._modules["mock_module"].module_class is MockModule
assert engine._modules["mock_module"].config == {"test": True}
def test_start_stop_module(self, mock_bus, mock_state, mock_config):
"""Engine can start and stop a module process."""
engine = Engine(bus=mock_bus, state=mock_state, config=mock_config)
engine.register(MockModule, config=mock_config)
success = engine.start("mock_module")
assert success is True
entry = engine._modules["mock_module"]
assert entry.process is not None
assert entry.process.is_alive()
# Stop
engine.stop("mock_module")
time.sleep(0.5)
assert entry.process is None
def test_dependency_resolution(self, mock_bus, mock_state, mock_config):
"""_topo_sort orders modules by dependency (dependencies first)."""
engine = Engine(bus=mock_bus, state=mock_state, config=mock_config)
engine.register(MockDepModule)
engine.register(MockModule)
order = _topo_sort(engine._modules)
assert order.index("mock_module") < order.index("mock_dep")
def test_hardware_tier_enforcement(self, mock_bus, mock_state, mock_config, hardware_tier_override):
"""Pi Zero tier blocks more than max_passive modules."""
# Set platform to pi_zero directly in config
mock_config["device"]["platform"] = "pi_zero"
with hardware_tier_override("pi_zero"):
engine = Engine(bus=mock_bus, state=mock_state, config=mock_config)
# pi_zero allows max 4 passive modules
assert engine._tier == "pi_zero"
limits = HARDWARE_TIERS["pi_zero"]
assert limits["max_passive"] == 4
# Register 5 passive modules (create unique subclasses)
for i in range(5):
cls = type(f"MockPassive{i}", (MockModule,), {"name": f"passive_{i}"})
engine.register(cls, config=mock_config)
# Start modules — first 4 should succeed, 5th should be blocked
results = []
for i in range(5):
# Mock the process as alive for previously started ones
for name, entry in engine._modules.items():
if entry.process is not None:
entry.process = MagicMock()
entry.process.is_alive.return_value = True
results.append(engine.start(f"passive_{i}"))
# At least some should succeed and some should be blocked
started = sum(1 for r in results if r is True)
# The first 4 should start, 5th blocked by tier limit
assert started <= limits["max_passive"]
def test_engagement_phase_gating(self, mock_bus, mock_state, mock_config):
"""passive_only phase blocks active modules."""
mock_config["engagement_phase"]["mode"] = "passive_only"
engine = Engine(bus=mock_bus, state=mock_state, config=mock_config)
engine.register(MockActiveModule, config=mock_config)
success = engine.start("mock_active")
assert success is False
# Switch to active_allowed
engine.set_phase("active_allowed")
# Register again since it was already registered
success = engine.start("mock_active")
assert success is True
engine.stop("mock_active")
tests/test_resource.py
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"""Tests for utils.resource — Hardware detection and resource monitoring."""
import os
from unittest.mock import patch, mock_open
import pytest
from utils.resource import (
get_hardware_tier,
get_memory_info,
get_cpu_temperature,
get_disk_usage,
get_process_resources,
detect_hardware,
HardwareInfo,
TIER_GENERIC,
TIER_PI_ZERO,
TIER_OPI_ZERO3,
)
class TestResource:
def test_detect_hardware_tier(self):
"""get_hardware_tier() returns a valid tier string."""
tier = get_hardware_tier()
assert tier in (TIER_GENERIC, TIER_PI_ZERO, TIER_OPI_ZERO3)
def test_detect_hardware_info(self):
"""detect_hardware() returns a HardwareInfo dataclass."""
info = detect_hardware()
assert isinstance(info, HardwareInfo)
assert info.tier in (TIER_GENERIC, TIER_PI_ZERO, TIER_OPI_ZERO3)
assert info.cpu_cores >= 1
assert isinstance(info.architecture, str)
assert len(info.architecture) > 0
def test_get_memory_info(self):
"""get_memory_info() returns a dict with MemTotal and MemAvailable."""
info = get_memory_info()
assert isinstance(info, dict)
# On Linux, /proc/meminfo should be available
if os.path.exists("/proc/meminfo"):
assert "MemTotal" in info
assert info["MemTotal"] > 0
def test_get_cpu_temperature(self):
"""get_cpu_temperature() returns a float or None (no crash)."""
temp = get_cpu_temperature()
# May be None if no thermal zone is available (CI/container)
if temp is not None:
assert isinstance(temp, float)
# Sanity check: between -20 and 120 Celsius
assert -20 <= temp <= 120
def test_get_disk_usage(self):
"""get_disk_usage() returns (total_gb, free_gb, used_pct) for /."""
total_gb, free_gb, used_pct = get_disk_usage("/")
assert isinstance(total_gb, float)
assert isinstance(free_gb, float)
assert isinstance(used_pct, float)
assert total_gb > 0
assert free_gb >= 0
assert 0 <= used_pct <= 100
def test_get_process_resources(self):
"""get_process_resources() returns stats for the current PID."""
pid = os.getpid()
result = get_process_resources(pid)
# Should succeed for our own PID on Linux
if result is not None:
assert result.pid == pid
assert result.rss_mb >= 0
assert result.vms_mb >= 0
assert result.threads >= 1
assert isinstance(result.name, str)
assert isinstance(result.state, str)
def test_get_process_resources_invalid_pid(self):
"""get_process_resources() returns None for a non-existent PID."""
result = get_process_resources(999999999)
assert result is None
tests/test_stealth_modules.py
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"""Tests for modules/stealth/ — Stealth module import and structure validation."""
import inspect
import importlib
import os
import sys
from unittest.mock import MagicMock, patch
import pytest
from modules.base import BaseModule
# All stealth modules defined in modules/stealth/__init__.py
STEALTH_MODULE_NAMES = [
"MacManager",
"ProcessDisguise",
"LogSuppression",
"EncryptedStorage",
"TmpfsManager",
"Watchdog",
"AntiForensics",
"TrafficMimicry",
"JA3Spoofer",
"IDSTester",
"LKMRootkit",
"OverlayfsManager",
]
STEALTH_MODULE_DOTTED = [
"modules.stealth.mac_manager",
"modules.stealth.process_disguise",
"modules.stealth.log_suppression",
"modules.stealth.encrypted_storage",
"modules.stealth.tmpfs_manager",
"modules.stealth.watchdog",
"modules.stealth.anti_forensics",
"modules.stealth.traffic_mimicry",
"modules.stealth.ja3_spoofer",
"modules.stealth.ids_tester",
"modules.stealth.lkm_rootkit",
"modules.stealth.overlayfs_manager",
]
class TestStealthModulesImportable:
@pytest.mark.parametrize("dotted_path", STEALTH_MODULE_DOTTED)
def test_all_stealth_modules_importable(self, dotted_path):
"""Each stealth module file can be imported without errors."""
mod = importlib.import_module(dotted_path)
assert mod is not None
class TestStealthModulesAreBaseModule:
@pytest.mark.parametrize("class_name", STEALTH_MODULE_NAMES)
def test_stealth_modules_are_base_module(self, class_name):
"""Each stealth module class is a subclass of BaseModule."""
import modules.stealth as stealth_pkg
cls = getattr(stealth_pkg, class_name)
assert issubclass(cls, BaseModule), f"{class_name} is not a BaseModule subclass"
class TestStealthModuleAttributes:
@pytest.mark.parametrize("class_name", STEALTH_MODULE_NAMES)
def test_stealth_module_attributes(self, class_name):
"""Each stealth module has required class attributes: name, module_type, priority."""
import modules.stealth as stealth_pkg
cls = getattr(stealth_pkg, class_name)
assert hasattr(cls, "name"), f"{class_name} missing 'name'"
assert hasattr(cls, "module_type"), f"{class_name} missing 'module_type'"
assert hasattr(cls, "priority"), f"{class_name} missing 'priority'"
assert hasattr(cls, "dependencies"), f"{class_name} missing 'dependencies'"
assert hasattr(cls, "requires_root"), f"{class_name} missing 'requires_root'"
# name should not be 'unnamed' (BaseModule default)
assert cls.name != "unnamed", f"{class_name} still has default name 'unnamed'"
# module_type should be 'stealth'
assert cls.module_type == "stealth", f"{class_name} module_type is '{cls.module_type}', expected 'stealth'"
# priority should be an integer
assert isinstance(cls.priority, int), f"{class_name} priority is not an int"
# dependencies should be a list
assert isinstance(cls.dependencies, list), f"{class_name} dependencies is not a list"
# Check abstract methods are implemented
for method_name in ("start", "stop", "status", "configure"):
method = getattr(cls, method_name, None)
assert method is not None, f"{class_name} missing method '{method_name}'"
assert callable(method), f"{class_name}.{method_name} is not callable"
class TestStealthModuleInstantiate:
@pytest.mark.parametrize("class_name", STEALTH_MODULE_NAMES)
def test_stealth_module_instantiate(self, class_name, mock_bus, mock_state, mock_config):
"""Each stealth module can be instantiated with mock bus/state/config."""
import modules.stealth as stealth_pkg
cls = getattr(stealth_pkg, class_name)
# Instantiate (should not crash)
instance = cls(bus=mock_bus, state=mock_state, config=mock_config)
assert instance is not None
assert instance.bus is mock_bus
assert instance.state is mock_state
assert instance.config is mock_config
assert instance._running is False
tests/test_tool_manager.py
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"""Tests for core.tool_manager — Subprocess lifecycle manager."""
import os
import time
import signal
from unittest.mock import MagicMock
import pytest
from core.tool_manager import ToolManager, ManagedTool
from core.bus import EventBus
class TestToolManager:
def test_register_tool(self, mock_bus):
"""register() adds a tool to the internal registry."""
tm = ToolManager(bus=mock_bus)
tm.register(
name="test_tool",
binary="/bin/echo",
args=["hello"],
max_restarts=2,
)
assert "test_tool" in tm._tools
tool = tm._tools["test_tool"]
assert tool.name == "test_tool"
assert tool.binary == "/bin/echo"
assert tool.args == ["hello"]
assert tool.max_restarts == 2
def test_start_stop_tool(self, mock_bus):
"""start() launches a subprocess and stop() terminates it."""
tm = ToolManager(bus=mock_bus)
tm.register(
name="sleeper",
binary="/bin/sleep",
args=["999"],
)
success = tm.start("sleeper")
assert success is True
status = tm.get_status("sleeper")
assert status["running"] is True
assert status["pid"] is not None
pid = status["pid"]
# Verify the process actually exists
try:
os.kill(pid, 0)
alive = True
except OSError:
alive = False
assert alive is True
# Stop
tm.stop("sleeper")
time.sleep(0.5)
status_after = tm.get_status("sleeper")
assert status_after["running"] is False
def test_restart_on_crash(self, mock_bus):
"""A tool that exits immediately triggers restart when monitor detects it."""
tm = ToolManager(bus=mock_bus)
# Register a tool that exits immediately (exit code 0)
tm.register(
name="crasher",
binary="/bin/false", # exits with code 1 immediately
args=[],
max_restarts=2,
)
success = tm.start("crasher")
# The start itself may succeed (process launched) even though it exits fast
# On some systems /bin/false exits so fast that poll() already shows it dead.
# Either way, the tool should have been created.
assert "crasher" in tm._tools
tool = tm._tools["crasher"]
# Wait briefly for the process to exit
time.sleep(0.5)
if tool.process is not None:
rc = tool.process.poll()
# /bin/false exits with 1
assert rc is not None # process already exited
def test_max_restarts(self, mock_bus):
"""After max_restarts, monitor gives up and leaves the tool stopped."""
tm = ToolManager(bus=mock_bus)
tm.register(
name="failbot",
binary="/bin/false",
args=[],
max_restarts=1,
)
# Start monitoring
tm.start_monitoring()
# Start the tool — it will exit immediately
tm.start("failbot")
# Wait for monitor to detect crash and exhaust restarts
# Monitor loop runs every 5 seconds, but we simulate faster
time.sleep(1.0)
tool = tm._tools["failbot"]
# Manually simulate what the monitor does
if tool.process and tool.process.poll() is not None:
tool.restart_count += 1
if tool.restart_count >= tool.max_restarts:
tool.process = None
tool.pid = None
# After exceeding max_restarts, process should be None
assert tool.restart_count >= tool.max_restarts
tm.stop_monitoring()
tm.stop_all()
def test_health_check(self, mock_bus):
"""Health check callback is stored and can be called."""
health_called = {"count": 0}
def my_health_check():
health_called["count"] += 1
return True
tm = ToolManager(bus=mock_bus)
tm.register(
name="healthy_tool",
binary="/bin/sleep",
args=["999"],
health_check=my_health_check,
)
tool = tm._tools["healthy_tool"]
assert tool.health_check is not None
# Call the health check directly
result = tool.health_check()
assert result is True
assert health_called["count"] == 1
# Start the tool and verify health check still works
tm.start("healthy_tool")
result2 = tool.health_check()
assert result2 is True
assert health_called["count"] == 2
tm.stop("healthy_tool")
def test_get_status_unregistered(self, mock_bus):
"""get_status() for an unregistered tool returns an error dict."""
tm = ToolManager(bus=mock_bus)
status = tm.get_status("nonexistent")
assert "error" in status