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test_connectivity_manager.py
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import unittest
import sys
# Add parent directory to path so we can import network_test_helper
# When running from unittest.sh, we're in internal_filesystem/, so tests/ is ../tests/
sys.path.insert(0, '../tests')
# Import our network test helpers
from network_test_helper import MockNetwork, MockTimer, MockTime, MockRequests, MockSocket
# Mock machine module with Timer
class MockMachine:
"""Mock machine module."""
Timer = MockTimer
# Mock usocket module
class MockUsocket:
"""Mock usocket module."""
AF_INET = MockSocket.AF_INET
SOCK_STREAM = MockSocket.SOCK_STREAM
@staticmethod
def socket(af, sock_type):
return MockSocket(af, sock_type)
# Inject mocks into sys.modules BEFORE importing connectivity_manager
sys.modules['machine'] = MockMachine
sys.modules['usocket'] = MockUsocket
# Mock requests module
mock_requests = MockRequests()
sys.modules['requests'] = mock_requests
# These tests need:
# from mpos.net.connectivity_manager import ConnectivityManager
# ...instead of
# from mpos import ConnectivityManager
# ...to make the mocking work.
class TestConnectivityManagerWithNetwork(unittest.TestCase):
"""Test ConnectivityManager with network module available."""
def setUp(self):
"""Set up test fixtures."""
# Create a mock network module
self.mock_network = MockNetwork(connected=True)
# Mock the network module globally BEFORE importing
sys.modules['network'] = self.mock_network
# Now import after network is mocked
# Need to reload the module to pick up the new network module
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
# Import fresh
from mpos.net.connectivity_manager import ConnectivityManager
self.ConnectivityManager = ConnectivityManager
# Reset the singleton instance
ConnectivityManager._instance = None
# Reset all mock timers
MockTimer.reset_all()
def tearDown(self):
"""Clean up after test."""
# Reset singleton
if hasattr(self, 'ConnectivityManager'):
self.ConnectivityManager._instance = None
# Clean up mocks
if 'network' in sys.modules:
del sys.modules['network']
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
MockTimer.reset_all()
def test_singleton_pattern(self):
"""Test that ConnectivityManager is a singleton via get()."""
# Using get() should return the same instance
cm1 = self.ConnectivityManager.get()
cm2 = self.ConnectivityManager.get()
cm3 = self.ConnectivityManager.get()
# All should be the same instance
self.assertEqual(id(cm1), id(cm2))
self.assertEqual(id(cm2), id(cm3))
def test_initialization_with_network_module(self):
"""Test initialization when network module is available."""
cm = self.ConnectivityManager()
# Should have network checking capability
self.assertTrue(cm.can_check_network, "a")
# Should have created WLAN instance
self.assertIsNotNone(cm.wlan, "b")
# Should have created timer
timer = MockTimer.get_timer(1)
self.assertIsNotNone(timer)
self.assertTrue(timer.active, "c")
self.assertEqual(timer.period, 8000)
self.assertEqual(timer.mode, MockTimer.PERIODIC)
def test_initial_connection_state_when_connected(self):
"""Test initial state when network is connected."""
self.mock_network.set_connected(True)
cm = self.ConnectivityManager()
# Should detect connection during initialization
self.assertTrue(cm.is_online())
def test_initial_connection_state_when_disconnected(self):
"""Test initial state when network is disconnected."""
self.mock_network.set_connected(False)
cm = self.ConnectivityManager()
# Should detect disconnection during initialization
self.assertFalse(cm.is_online())
def test_callback_registration(self):
"""Test registering callbacks."""
cm = self.ConnectivityManager()
callback_called = []
def my_callback(online):
callback_called.append(online)
cm.register_callback(my_callback)
# Callback should be in the list
self.assertTrue(my_callback in cm.callbacks)
# Registering again should not duplicate
cm.register_callback(my_callback)
self.assertEqual(cm.callbacks.count(my_callback), 1)
def test_callback_unregistration(self):
"""Test unregistering callbacks."""
cm = self.ConnectivityManager()
def callback1(online):
pass
def callback2(online):
pass
cm.register_callback(callback1)
cm.register_callback(callback2)
# Both should be registered
self.assertTrue(callback1 in cm.callbacks)
self.assertTrue(callback2 in cm.callbacks)
# Unregister callback1
cm.unregister_callback(callback1)
# Only callback2 should remain
self.assertFalse(callback1 in cm.callbacks)
self.assertTrue(callback2 in cm.callbacks)
def test_callback_notification_on_state_change(self):
"""Test that callbacks are notified when state changes."""
self.mock_network.set_connected(True)
cm = self.ConnectivityManager()
notifications = []
def my_callback(online):
notifications.append(online)
cm.register_callback(my_callback)
# Simulate going offline
self.mock_network.set_connected(False)
# Trigger periodic check (timer passes itself as first arg)
timer = MockTimer.get_timer(1)
timer.callback(timer)
# Should have been notified of offline state
self.assertEqual(len(notifications), 1)
self.assertFalse(notifications[0])
# Simulate going back online
self.mock_network.set_connected(True)
timer.callback(timer)
# Should have been notified of online state
self.assertEqual(len(notifications), 2)
self.assertTrue(notifications[1])
def test_callback_notification_not_sent_when_state_unchanged(self):
"""Test that callbacks are not notified when state doesn't change."""
self.mock_network.set_connected(True)
cm = self.ConnectivityManager()
notifications = []
def my_callback(online):
notifications.append(online)
cm.register_callback(my_callback)
# Trigger periodic check while still connected
timer = MockTimer.get_timer(1)
timer.callback(timer)
# Should not have been notified (state didn't change)
self.assertEqual(len(notifications), 0)
def test_periodic_check_detects_connection_change(self):
"""Test that periodic check detects connection state changes."""
self.mock_network.set_connected(True)
cm = self.ConnectivityManager()
# Should be online initially
self.assertTrue(cm.is_online())
# Simulate disconnection
self.mock_network.set_connected(False)
# Trigger periodic check
timer = MockTimer.get_timer(1)
timer.callback(timer)
# Should now be offline
self.assertFalse(cm.is_online())
# Reconnect
self.mock_network.set_connected(True)
timer.callback(timer)
# Should be online again
self.assertTrue(cm.is_online())
def test_callback_exception_handling(self):
"""Test that exceptions in callbacks don't break the manager."""
cm = self.ConnectivityManager()
notifications = []
def bad_callback(online):
raise Exception("Callback error!")
def good_callback(online):
notifications.append(online)
cm.register_callback(bad_callback)
cm.register_callback(good_callback)
# Trigger state change
self.mock_network.set_connected(False)
timer = MockTimer.get_timer(1)
timer.callback(timer)
# Good callback should still have been called despite bad callback
self.assertEqual(len(notifications), 1)
self.assertFalse(notifications[0])
def test_multiple_callbacks(self):
"""Test multiple callbacks are all notified."""
cm = self.ConnectivityManager()
notifications1 = []
notifications2 = []
notifications3 = []
cm.register_callback(lambda online: notifications1.append(online))
cm.register_callback(lambda online: notifications2.append(online))
cm.register_callback(lambda online: notifications3.append(online))
# Trigger state change
self.mock_network.set_connected(False)
timer = MockTimer.get_timer(1)
timer.callback(timer)
# All callbacks should have been notified
self.assertEqual(len(notifications1), 1)
self.assertEqual(len(notifications2), 1)
self.assertEqual(len(notifications3), 1)
self.assertFalse(notifications1[0])
self.assertFalse(notifications2[0])
self.assertFalse(notifications3[0])
def test_is_wifi_connected(self):
"""Test is_wifi_connected() method."""
cm = self.ConnectivityManager()
# is_connected is set to False during init for platforms with network module
# It's only set to True for platforms without network module (desktop)
self.assertFalse(cm.is_wifi_connected())
class TestConnectivityManagerWithoutNetwork(unittest.TestCase):
"""Test ConnectivityManager without network module (desktop mode)."""
def setUp(self):
"""Set up test fixtures."""
# Remove network module to simulate desktop environment
if 'network' in sys.modules:
del sys.modules['network']
# Reload the module without network
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
from mpos.net.connectivity_manager import ConnectivityManager
self.ConnectivityManager = ConnectivityManager
# Reset the singleton instance
ConnectivityManager._instance = None
# Reset timers
MockTimer.reset_all()
def tearDown(self):
"""Clean up after test."""
if hasattr(self, 'ConnectivityManager'):
self.ConnectivityManager._instance = None
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
MockTimer.reset_all()
def test_initialization_without_network_module(self):
"""Test initialization when network module is not available."""
cm = self.ConnectivityManager()
# Should NOT have network checking capability
self.assertFalse(cm.can_check_network)
# Should not have WLAN instance
self.assertIsNone(cm.wlan)
# Should still create timer
timer = MockTimer.get_timer(1)
self.assertIsNotNone(timer)
def test_always_online_without_network_module(self):
"""Test that manager assumes always online without network module."""
cm = self.ConnectivityManager()
# Should assume connected
self.assertTrue(cm.is_connected)
# Should assume online
self.assertTrue(cm.is_online())
def test_periodic_check_without_network_module(self):
"""Test periodic check when there's no network module."""
cm = self.ConnectivityManager()
# Trigger periodic check
timer = MockTimer.get_timer(1)
timer.callback(timer)
# Should still be online
self.assertTrue(cm.is_online())
def test_callbacks_not_triggered_without_network(self):
"""Test that callbacks aren't triggered when always online."""
cm = self.ConnectivityManager()
notifications = []
cm.register_callback(lambda online: notifications.append(online))
# Trigger periodic checks
timer = MockTimer.get_timer(1)
for _ in range(5):
timer.callback(timer)
# No notifications should have been sent (state never changed)
self.assertEqual(len(notifications), 0)
class TestConnectivityManagerWaitUntilOnline(unittest.TestCase):
"""Test wait_until_online functionality."""
def setUp(self):
"""Set up test fixtures."""
# Create mock network
self.mock_network = MockNetwork(connected=False)
sys.modules['network'] = self.mock_network
# Reload module
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
from mpos.net.connectivity_manager import ConnectivityManager
self.ConnectivityManager = ConnectivityManager
ConnectivityManager._instance = None
MockTimer.reset_all()
def tearDown(self):
"""Clean up after test."""
if hasattr(self, 'ConnectivityManager'):
self.ConnectivityManager._instance = None
MockTimer.reset_all()
if 'network' in sys.modules:
del sys.modules['network']
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
def test_wait_until_online_already_online(self):
"""Test wait_until_online when already online."""
self.mock_network.set_connected(True)
cm = self.ConnectivityManager()
# Should return immediately
result = cm.wait_until_online(timeout=5)
self.assertTrue(result)
def test_wait_until_online_without_network_module(self):
"""Test wait_until_online without network module (desktop)."""
# Remove network module
if 'network' in sys.modules:
del sys.modules['network']
# Reload module
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
from mpos.net.connectivity_manager import ConnectivityManager
self.ConnectivityManager = ConnectivityManager
ConnectivityManager._instance = None
cm = self.ConnectivityManager()
# Should return True immediately (always online)
result = cm.wait_until_online(timeout=5)
self.assertTrue(result)
class TestConnectivityManagerEdgeCases(unittest.TestCase):
"""Test edge cases and error conditions."""
def setUp(self):
"""Set up test fixtures."""
self.mock_network = MockNetwork(connected=True)
sys.modules['network'] = self.mock_network
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
from mpos.net.connectivity_manager import ConnectivityManager
self.ConnectivityManager = ConnectivityManager
ConnectivityManager._instance = None
MockTimer.reset_all()
def tearDown(self):
"""Clean up after test."""
if hasattr(self, 'ConnectivityManager'):
self.ConnectivityManager._instance = None
MockTimer.reset_all()
if 'network' in sys.modules:
del sys.modules['network']
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
def test_initialization_creates_timer(self):
"""Test that initialization creates periodic timer."""
cm = self.ConnectivityManager()
# Timer should exist
timer = MockTimer.get_timer(1)
self.assertIsNotNone(timer)
# Timer should be configured correctly
self.assertEqual(timer.period, 8000) # 8 seconds
self.assertEqual(timer.mode, MockTimer.PERIODIC)
self.assertTrue(timer.active)
def test_get_creates_instance_if_not_exists(self):
"""Test that get() creates instance if it doesn't exist."""
# Ensure no instance exists
self.assertIsNone(self.ConnectivityManager._instance)
# get() should create one
cm = self.ConnectivityManager.get()
self.assertIsNotNone(cm)
# Subsequent get() should return same instance
cm2 = self.ConnectivityManager.get()
self.assertEqual(id(cm), id(cm2))
def test_periodic_check_does_not_notify_on_init(self):
"""Test periodic check doesn't notify during initialization."""
self.mock_network.set_connected(False)
# Register callback AFTER creating instance to observe later notifications
cm = self.ConnectivityManager()
notifications = []
cm.register_callback(lambda online: notifications.append(online))
# No notifications yet (initial check had notify=False)
self.assertEqual(len(notifications), 0)
def test_unregister_nonexistent_callback(self):
"""Test unregistering a callback that was never registered."""
cm = self.ConnectivityManager()
def my_callback(online):
pass
# Should not raise an exception
cm.unregister_callback(my_callback)
# Callbacks should be empty
self.assertEqual(len(cm.callbacks), 0)
def test_online_offline_online_transitions(self):
"""Test multiple state transitions."""
self.mock_network.set_connected(True)
cm = self.ConnectivityManager()
notifications = []
cm.register_callback(lambda online: notifications.append(online))
timer = MockTimer.get_timer(1)
# Go offline
self.mock_network.set_connected(False)
timer.callback(timer)
self.assertFalse(cm.is_online(), "a")
self.assertEqual(notifications[-1], False)
# Go online
self.mock_network.set_connected(True)
timer.callback(timer)
self.assertTrue(cm.is_online(), "b")
self.assertEqual(notifications[-1], True)
# Go offline again
self.mock_network.set_connected(False)
timer.callback(timer)
self.assertFalse(cm.is_online())
self.assertEqual(notifications[-1], False)
# Should have 3 notifications
self.assertEqual(len(notifications), 3)
class TestConnectivityManagerIntegration(unittest.TestCase):
"""Integration tests for ConnectivityManager."""
def setUp(self):
"""Set up test fixtures."""
self.mock_network = MockNetwork(connected=True)
sys.modules['network'] = self.mock_network
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
from mpos.net.connectivity_manager import ConnectivityManager
self.ConnectivityManager = ConnectivityManager
ConnectivityManager._instance = None
MockTimer.reset_all()
def tearDown(self):
"""Clean up after test."""
if hasattr(self, 'ConnectivityManager'):
self.ConnectivityManager._instance = None
MockTimer.reset_all()
if 'network' in sys.modules:
del sys.modules['network']
if 'mpos.net.connectivity_manager' in sys.modules:
del sys.modules['mpos.net.connectivity_manager']
def test_realistic_usage_scenario(self):
"""Test a realistic usage scenario."""
# App starts, creates connectivity manager
cm = self.ConnectivityManager.get()
# App registers callback to update UI
ui_state = {'online': True}
def update_ui(online):
ui_state['online'] = online
cm.register_callback(update_ui)
# Initially online
self.assertTrue(cm.is_online())
self.assertTrue(ui_state['online'])
# User moves out of WiFi range
self.mock_network.set_connected(False)
timer = MockTimer.get_timer(1)
timer.callback(timer)
# UI should reflect offline state
self.assertFalse(cm.is_online())
self.assertFalse(ui_state['online'])
# User returns to WiFi range
self.mock_network.set_connected(True)
timer.callback(timer)
# UI should reflect online state
self.assertTrue(cm.is_online())
self.assertTrue(ui_state['online'])
# App closes, unregisters callback
cm.unregister_callback(update_ui)
# Callback should be removed
self.assertFalse(update_ui in cm.callbacks)
def test_multiple_apps_using_connectivity_manager(self):
"""Test multiple apps/components using the same manager."""
cm = self.ConnectivityManager.get()
# Three different apps register callbacks
app1_state = []
app2_state = []
app3_state = []
cm.register_callback(lambda online: app1_state.append(online))
cm.register_callback(lambda online: app2_state.append(online))
cm.register_callback(lambda online: app3_state.append(online))
# Network goes offline
self.mock_network.set_connected(False)
timer = MockTimer.get_timer(1)
timer.callback(timer)
# All apps should be notified
self.assertEqual(len(app1_state), 1)
self.assertEqual(len(app2_state), 1)
self.assertEqual(len(app3_state), 1)
# All should see offline state
self.assertFalse(app1_state[0])
self.assertFalse(app2_state[0])
self.assertFalse(app3_state[0])