""" Standalone tests for the MaintenanceTaskRunner. These tests work without OpenHands dependencies and focus on testing the core logic and behavior of the task runner using comprehensive mocking. To run these tests in an environment with OpenHands dependencies: 1. Ensure OpenHands is available in the Python path 2. Run: python -m pytest tests/unit/test_maintenance_task_runner_standalone.py -v """ import asyncio from datetime import datetime, timedelta from unittest.mock import AsyncMock, MagicMock import pytest class TestMaintenanceTaskRunnerStandalone: """Standalone tests for MaintenanceTaskRunner without OpenHands dependencies.""" def test_runner_initialization(self): """Test MaintenanceTaskRunner initialization.""" # Mock the runner class structure class MockMaintenanceTaskRunner: """Minimal mock of MaintenanceTaskRunner to verify initialization state.""" def __init__(self): self._running = False self._task = None runner = MockMaintenanceTaskRunner() assert runner._running is False assert runner._task is None @pytest.mark.asyncio async def test_start_stop_lifecycle(self): """Test the start/stop lifecycle of the runner.""" # Mock the runner behavior class MockMaintenanceTaskRunner: """Mock runner for verifying start/stop lifecycle behaviour.""" def __init__(self): self._running: bool = False self._task = None self.start_called = False self.stop_called = False async def start(self): """Start the runner.""" if self._running: return self._running = True self._task = MagicMock() # Mock asyncio.Task self.start_called = True async def stop(self): """Stop the runner.""" if not self._running: return self._running = False if self._task: self._task.cancel() # Simulate awaiting the cancelled task self.stop_called = True runner = MockMaintenanceTaskRunner() # Test start await runner.start() assert runner._running is True assert runner.start_called is True assert runner._task is not None # Test start when already running (should be no-op) runner.start_called = False await runner.start() assert runner.start_called is False # Should not be called again # Test stop await runner.stop() running: bool = runner._running assert running is False assert runner.stop_called is True # Test stop when not running (should be no-op) runner.stop_called = False await runner.stop() assert runner.stop_called is False # Should not be called again @pytest.mark.asyncio async def test_run_loop_behavior(self): """Test the main run loop behavior.""" # Mock the run loop logic class MockMaintenanceTaskRunner: """Mock runner for verifying run loop iteration behaviour.""" def __init__(self): self._running = False self.process_calls = 0 self.sleep_calls = 0 async def _run_loop(self): """Execute the main processing loop.""" loop_count = 0 while self._running and loop_count < 3: # Limit for testing try: await self._process_pending_tasks() self.process_calls += 1 except Exception: pass try: await asyncio.sleep(0.01) # Short sleep for testing self.sleep_calls += 1 except asyncio.CancelledError: break loop_count += 1 async def _process_pending_tasks(self): """Process pending tasks.""" # Mock processing pass runner = MockMaintenanceTaskRunner() runner._running = True # Run the loop await runner._run_loop() # Verify the loop ran and called process_pending_tasks assert runner.process_calls == 3 assert runner.sleep_calls == 3 @pytest.mark.asyncio async def test_run_loop_error_handling(self): """Test error handling in the run loop.""" class MockMaintenanceTaskRunner: """Mock runner for verifying error handling in the run loop.""" def __init__(self): self._running = False self.error_count = 0 self.process_calls = 0 self.attempt_count = 0 async def _run_loop(self): """Execute the main processing loop.""" loop_count = 0 while self._running and loop_count < 2: # Limit for testing try: await self._process_pending_tasks() self.process_calls += 1 except Exception: self.error_count += 1 # Simulate logging the error try: await asyncio.sleep(0.01) # Short sleep for testing except asyncio.CancelledError: break loop_count += 1 async def _process_pending_tasks(self): """Process pending tasks.""" self.attempt_count += 1 # Only fail on the first attempt if self.attempt_count == 1: raise Exception('Simulated processing error') # Subsequent calls succeed runner = MockMaintenanceTaskRunner() runner._running = True # Run the loop await runner._run_loop() # Verify error was handled and loop continued assert runner.error_count == 1 assert runner.process_calls == 1 # First failed, second succeeded assert runner.attempt_count == 2 # Two attempts were made def test_pending_task_query_logic(self): """Test the logic for finding pending tasks.""" def find_pending_tasks(all_tasks, current_time): """Simulate the database query logic.""" pending_tasks = [] for task in all_tasks: if task['status'] == 'PENDING' and task['start_at'] <= current_time: pending_tasks.append(task) return pending_tasks now = datetime.now() past_time = now - timedelta(minutes=5) future_time = now + timedelta(minutes=5) # Mock tasks with different statuses and start times all_tasks = [ {'id': 1, 'status': 'PENDING', 'start_at': past_time}, # Should be selected {'id': 2, 'status': 'PENDING', 'start_at': now}, # Should be selected { 'id': 3, 'status': 'PENDING', 'start_at': future_time, }, # Should NOT be selected (future) { 'id': 4, 'status': 'WORKING', 'start_at': past_time, }, # Should NOT be selected (working) { 'id': 5, 'status': 'COMPLETED', 'start_at': past_time, }, # Should NOT be selected (completed) { 'id': 6, 'status': 'ERROR', 'start_at': past_time, }, # Should NOT be selected (error) { 'id': 7, 'status': 'INACTIVE', 'start_at': past_time, }, # Should NOT be selected (inactive) ] pending_tasks = find_pending_tasks(all_tasks, now) # Should only return tasks 1 and 2 assert len(pending_tasks) == 2 assert pending_tasks[0]['id'] == 1 assert pending_tasks[1]['id'] == 2 @pytest.mark.asyncio async def test_task_processing_success(self): """Test successful task processing.""" # Mock task processing logic class MockTask: """Mock task for successful processing scenarios.""" def __init__(self, task_id, processor_type): self.id = task_id self.processor_type = processor_type self.status = 'PENDING' self.info = None self.updated_at = None def get_processor(self): """Return a mock processor.""" # Mock processor processor = AsyncMock() processor.return_value = {'result': 'success', 'processed_items': 5} return processor class MockMaintenanceTaskRunner: """Mock runner for verifying task status transitions on success.""" def __init__(self): self.status_updates = [] self.commits = [] async def _process_task(self, task): """Process a single task.""" # Simulate updating status to WORKING task.status = 'WORKING' task.updated_at = datetime.now() self.status_updates.append(('WORKING', task.id)) self.commits.append('working_commit') try: # Get and execute processor processor = task.get_processor() result = await processor(task) # Mark as completed task.status = 'COMPLETED' task.info = result task.updated_at = datetime.now() self.status_updates.append(('COMPLETED', task.id)) self.commits.append('completed_commit') return result except Exception as e: # Handle error (not expected in this test) task.status = 'ERROR' task.info = {'error': str(e)} self.status_updates.append(('ERROR', task.id)) self.commits.append('error_commit') raise runner = MockMaintenanceTaskRunner() task = MockTask(123, 'test_processor') # Process the task result = await runner._process_task(task) # Verify the processing flow assert len(runner.status_updates) == 2 assert runner.status_updates[0] == ('WORKING', 123) assert runner.status_updates[1] == ('COMPLETED', 123) assert len(runner.commits) == 2 assert task.status == 'COMPLETED' assert task.info == {'result': 'success', 'processed_items': 5} assert result == {'result': 'success', 'processed_items': 5} @pytest.mark.asyncio async def test_task_processing_failure(self): """Test task processing with failure.""" class MockTask: """Mock task for failure processing scenarios.""" def __init__(self, task_id, processor_type): self.id = task_id self.processor_type = processor_type self.status = 'PENDING' self.info = None self.updated_at = None def get_processor(self): """Return a mock processor.""" # Mock processor that fails processor = AsyncMock() processor.side_effect = ValueError('Processing failed') return processor class MockMaintenanceTaskRunner: """Mock runner for verifying task status transitions on failure.""" def __init__(self): self.status_updates = [] self.error_logged = None async def _process_task(self, task): """Process a single task.""" # Simulate updating status to WORKING task.status = 'WORKING' task.updated_at = datetime.now() self.status_updates.append(('WORKING', task.id)) try: # Get and execute processor processor = task.get_processor() result = await processor(task) # This shouldn't be reached task.status = 'COMPLETED' task.info = result self.status_updates.append(('COMPLETED', task.id)) except Exception as e: # Handle error error_info = { 'error': str(e), 'error_type': type(e).__name__, 'processor_type': task.processor_type, } task.status = 'ERROR' task.info = error_info task.updated_at = datetime.now() self.status_updates.append(('ERROR', task.id)) self.error_logged = error_info runner = MockMaintenanceTaskRunner() task = MockTask(456, 'failing_processor') # Process the task await runner._process_task(task) # Verify the error handling flow assert len(runner.status_updates) == 2 assert runner.status_updates[0] == ('WORKING', 456) assert runner.status_updates[1] == ('ERROR', 456) assert task.status == 'ERROR' info = task.info assert info is not None assert info['error'] == 'Processing failed' assert info['error_type'] == 'ValueError' assert info['processor_type'] == 'failing_processor' assert runner.error_logged is not None def test_database_session_handling_pattern(self): """Test the database session handling pattern.""" # Mock the session handling logic class MockSession: """Mock database session for verifying session usage patterns.""" def __init__(self): self.queries = [] self.merges = [] self.commits = [] self.closed = False def query(self, model): self.queries.append(model) return self def filter(self, *conditions): return self def all(self): return [] # Return empty list for testing def merge(self, obj): self.merges.append(obj) return obj def commit(self): self.commits.append(datetime.now()) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.closed = True def mock_session_maker(): return MockSession() # Simulate the session usage pattern def process_pending_tasks_pattern(): with mock_session_maker() as session: # Query for pending tasks pending_tasks = session.query('MaintenanceTask').filter().all() return session, pending_tasks def process_task_pattern(task): # Update to WORKING with mock_session_maker() as session: task = session.merge(task) session.commit() working_session = session # Update to COMPLETED/ERROR with mock_session_maker() as session: task = session.merge(task) session.commit() final_session = session return working_session, final_session # Test the patterns query_session, tasks = process_pending_tasks_pattern() assert len(query_session.queries) == 1 assert query_session.closed is True mock_task = {'id': 1} working_session, final_session = process_task_pattern(mock_task) assert len(working_session.merges) == 1 assert len(working_session.commits) == 1 assert len(final_session.merges) == 1 assert len(final_session.commits) == 1 assert working_session.closed is True assert final_session.closed is True def test_logging_structure(self): """Test the structure of logging calls that would be made.""" log_calls = [] def mock_logger_info(message, extra=None): log_calls.append({'level': 'info', 'message': message, 'extra': extra}) def mock_logger_error(message, extra=None): log_calls.append({'level': 'error', 'message': message, 'extra': extra}) # Simulate the logging that would happen in the runner def simulate_runner_logging(): # Start logging mock_logger_info('maintenance_task_runner:started') # Found pending tasks mock_logger_info( 'maintenance_task_runner:found_pending_tasks', extra={'count': 3} ) # Processing task mock_logger_info( 'maintenance_task_runner:processing_task', extra={'task_id': 123, 'processor_type': 'test_processor'}, ) # Task completed mock_logger_info( 'maintenance_task_runner:task_completed', extra={ 'task_id': 123, 'processor_type': 'test_processor', 'info': {'result': 'success'}, }, ) # Task failed mock_logger_error( 'maintenance_task_runner:task_failed', extra={ 'task_id': 456, 'processor_type': 'failing_processor', 'error': 'Processing failed', 'error_type': 'ValueError', }, ) # Loop error mock_logger_error( 'maintenance_task_runner:loop_error', extra={'error': 'Database connection failed'}, ) # Stop logging mock_logger_info('maintenance_task_runner:stopped') # Run the simulation simulate_runner_logging() # Verify logging structure assert len(log_calls) == 7 # Check start log start_log = log_calls[0] assert start_log['level'] == 'info' assert 'started' in start_log['message'] assert start_log['extra'] is None # Check found tasks log found_log = log_calls[1] assert 'found_pending_tasks' in found_log['message'] assert found_log['extra']['count'] == 3 # Check processing log processing_log = log_calls[2] assert 'processing_task' in processing_log['message'] assert processing_log['extra']['task_id'] == 123 assert processing_log['extra']['processor_type'] == 'test_processor' # Check completed log completed_log = log_calls[3] assert 'task_completed' in completed_log['message'] assert completed_log['extra']['info']['result'] == 'success' # Check failed log failed_log = log_calls[4] assert failed_log['level'] == 'error' assert 'task_failed' in failed_log['message'] assert failed_log['extra']['error'] == 'Processing failed' assert failed_log['extra']['error_type'] == 'ValueError' # Check loop error log loop_error_log = log_calls[5] assert loop_error_log['level'] == 'error' assert 'loop_error' in loop_error_log['message'] # Check stop log stop_log = log_calls[6] assert 'stopped' in stop_log['message'] @pytest.mark.asyncio async def test_concurrent_task_processing(self): """Test handling of multiple tasks in sequence.""" class MockTask: """Mock task with configurable success or failure behaviour.""" def __init__(self, task_id, should_fail=False): self.id = task_id self.processor_type = f'processor_{task_id}' self.status = 'PENDING' self.should_fail = should_fail def get_processor(self): """Return a mock processor.""" processor = AsyncMock() if self.should_fail: processor.side_effect = Exception(f'Task {self.id} failed') else: processor.return_value = {'task_id': self.id, 'result': 'success'} return processor class MockMaintenanceTaskRunner: """Mock runner for verifying sequential processing of multiple tasks.""" def __init__(self): self.processed_tasks = [] self.successful_tasks = [] self.failed_tasks = [] async def _process_pending_tasks(self): """Process all pending tasks.""" # Simulate finding multiple tasks tasks = [ MockTask(1, should_fail=False), MockTask(2, should_fail=True), MockTask(3, should_fail=False), ] for task in tasks: await self._process_task(task) async def _process_task(self, task): """Process a single task.""" self.processed_tasks.append(task.id) try: processor = task.get_processor() result = await processor(task) self.successful_tasks.append((task.id, result)) except Exception as e: self.failed_tasks.append((task.id, str(e))) runner = MockMaintenanceTaskRunner() # Process all pending tasks await runner._process_pending_tasks() # Verify all tasks were processed assert len(runner.processed_tasks) == 3 assert runner.processed_tasks == [1, 2, 3] # Verify success/failure handling assert len(runner.successful_tasks) == 2 assert len(runner.failed_tasks) == 1 # Check successful tasks successful_ids = [task_id for task_id, _ in runner.successful_tasks] assert 1 in successful_ids assert 3 in successful_ids # Check failed task failed_id, error = runner.failed_tasks[0] assert failed_id == 2 assert 'Task 2 failed' in error def test_global_instance_pattern(self): """Test the global instance pattern.""" # Mock the global instance pattern class MockMaintenanceTaskRunner: """Mock runner for verifying the global singleton instance pattern.""" def __init__(self): self.instance_id = id(self) # Simulate the global instance global_runner = MockMaintenanceTaskRunner() # Verify it's a singleton-like pattern assert global_runner.instance_id == id(global_runner) # In the actual code, there would be: # maintenance_task_runner = MaintenanceTaskRunner() # This ensures a single instance is used throughout the application @pytest.mark.asyncio async def test_cancellation_handling(self): """Test proper handling of task cancellation.""" class MockMaintenanceTaskRunner: """Mock runner for verifying cancellation handling in the run loop.""" def __init__(self): self._running = False self.cancellation_handled = False async def _run_loop(self): """Execute the main processing loop.""" try: while self._running: await asyncio.sleep(0.01) except asyncio.CancelledError: self.cancellation_handled = True raise # Re-raise to properly handle cancellation runner = MockMaintenanceTaskRunner() runner._running = True # Start the loop and cancel it task = asyncio.create_task(runner._run_loop()) await asyncio.sleep(0.001) # Let it start task.cancel() # Wait for cancellation to be handled with pytest.raises(asyncio.CancelledError): await task assert runner.cancellation_handled is True # Additional integration test scenarios that would work with full dependencies class TestMaintenanceTaskRunnerIntegration: """ Integration test scenarios for when OpenHands dependencies are available. These tests would require: 1. OpenHands to be installed and available 2. Database setup with proper migrations 3. Real MaintenanceTask and processor instances """ def test_full_runner_workflow_description(self): """ Describe the full workflow test that would be implemented with dependencies. This test would: 1. Create a real MaintenanceTaskRunner instance 2. Set up a test database with MaintenanceTask records 3. Create real processor instances and tasks 4. Start the runner and verify it processes tasks correctly 5. Verify database state changes 6. Verify proper logging and error handling 7. Test the complete start/stop lifecycle """ pass def test_database_integration_description(self): """ Describe database integration test that would be implemented. This test would: 1. Use the session_maker fixture from conftest.py 2. Create MaintenanceTask records with various statuses and start times 3. Run the runner against real database queries 4. Verify that only appropriate tasks are selected and processed 5. Verify database transactions and status updates work correctly """ pass def test_processor_integration_description(self): """ Describe processor integration test. This test would: 1. Create real processor instances (UserVersionUpgradeProcessor, etc.) 2. Store them in MaintenanceTask records 3. Verify the runner can deserialize and execute them correctly 4. Test with both successful and failing processors 5. Verify result storage and error handling """ pass def test_performance_and_scalability_description(self): """ Describe performance test scenarios. This test would: 1. Create a large number of pending tasks 2. Measure processing time and resource usage 3. Verify the runner handles high load gracefully 4. Test memory usage and cleanup 5. Verify proper handling of long-running processors """ pass