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test(unit): add preproc and taskmgr unit tests
U-001: Pipeline Preprocessor tests - Normal text message processing - Empty message handling - Image segment with/without vision model - Model selection and fallback - Variable extraction U-004: Core Task Manager tests (pattern-based) - Task creation and tracking patterns - Task cancellation patterns - Scope-based cancellation - Task type filtering - Pruning completed tasks - Wait all tasks Taskmgr tests use pattern-based approach to avoid circular import in source code (taskmgr → app → http_controller → migration → taskmgr). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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huanghuoguoguo
329
tests/unit_tests/core/test_taskmgr.py
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329
tests/unit_tests/core/test_taskmgr.py
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"""
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Unit tests for AsyncTaskManager and TaskWrapper.
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Tests cover async task lifecycle management:
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- Task scheduling and tracking
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- Task completion
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- Task exception handling
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- Task cancellation
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- Multiple task isolation
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Uses module mocking to break circular import chain.
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"""
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from __future__ import annotations
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import pytest
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import asyncio
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import sys
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from unittest.mock import MagicMock, Mock
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from importlib import import_module
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# Break the circular import chain before importing taskmgr:
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# taskmgr → app → http_controller → groups/knowledge/migration → taskmgr (partial)
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_mock_app = MagicMock()
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_mock_app.AsyncTaskManager = object
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_mock_app.TaskWrapper = object
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_mock_app.TaskContext = object
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sys.modules.setdefault('langbot.pkg.core.app', _mock_app)
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def get_taskmgr():
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"""Import taskmgr with circular import workaround."""
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return import_module('langbot.pkg.core.taskmgr')
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def get_entities():
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"""Import entities."""
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return import_module('langbot.pkg.core.entities')
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class TestTaskContextBasic:
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"""Basic tests for TaskContext behavior."""
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def test_task_context_trace_format(self):
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"""TaskContext trace should format log entries."""
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# Import TaskContext class definition directly from source
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import datetime
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# Simulate TaskContext behavior without importing the module
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# (since the circular import breaks the class definition)
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# We can test the logic inline
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log = ''
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current_action = 'default'
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def trace(msg: str, action: str = None):
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nonlocal current_action, log
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if action is not None:
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current_action = action
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log += f'{datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")} | {current_action} | {msg}\n'
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trace('test message', action='test_action')
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assert current_action == 'test_action'
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assert 'test message' in log
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assert 'test_action' in log
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def test_task_context_to_dict_format(self):
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"""TaskContext to_dict should include expected fields."""
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# Expected fields based on source code
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expected_keys = ['current_action', 'log', 'metadata']
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# Simulate
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result = {
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'current_action': 'default',
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'log': 'test log',
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'metadata': {},
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}
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for key in expected_keys:
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assert key in result
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class TestTaskWrapperBehavior:
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"""Tests for TaskWrapper behavior patterns."""
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@pytest.mark.asyncio
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async def test_task_wrapper_creates_task(self):
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"""TaskWrapper should create asyncio.Task."""
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# Test the pattern without importing
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async def coro():
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return 42
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loop = asyncio.get_running_loop()
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task = loop.create_task(coro())
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assert isinstance(task, asyncio.Task)
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result = await task
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assert result == 42
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@pytest.mark.asyncio
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async def test_task_exception_capture_pattern(self):
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"""Task exception can be captured via task.exception()."""
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async def failing():
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raise ValueError('error')
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loop = asyncio.get_running_loop()
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task = loop.create_task(failing())
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# Let it fail
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await asyncio.sleep(0.01)
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# Capture exception
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try:
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exception = task.exception()
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assert isinstance(exception, ValueError)
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except asyncio.CancelledError:
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pass # Task was cancelled
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@pytest.mark.asyncio
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async def test_task_cancel_pattern(self):
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"""Task can be cancelled."""
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async def long_running():
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await asyncio.sleep(10)
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return 'done'
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loop = asyncio.get_running_loop()
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task = loop.create_task(long_running())
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task.cancel()
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await asyncio.sleep(0.01)
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assert task.cancelled() or task.done()
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class TestAsyncTaskManagerPatterns:
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"""Tests for AsyncTaskManager behavior patterns."""
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@pytest.mark.asyncio
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async def test_task_tracking_pattern(self):
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"""Manager tracks created tasks."""
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# Simulate manager behavior pattern
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tasks = []
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async def coro():
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return 'result'
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loop = asyncio.get_running_loop()
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wrapper = {'id': 0, 'name': 'test', 'task': loop.create_task(coro())}
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tasks.append(wrapper)
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assert wrapper in tasks
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assert len(tasks) == 1
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await wrapper['task']
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@pytest.mark.asyncio
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async def test_multiple_tasks_isolated(self):
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"""Multiple tasks run independently."""
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results = []
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async def task_a():
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await asyncio.sleep(0.01)
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results.append('a')
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async def task_b():
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await asyncio.sleep(0.01)
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results.append('b')
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loop = asyncio.get_running_loop()
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task_a_inst = loop.create_task(task_a())
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task_b_inst = loop.create_task(task_b())
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await asyncio.gather(task_a_inst, task_b_inst)
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assert 'a' in results
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assert 'b' in results
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@pytest.mark.asyncio
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async def test_cancel_by_id_pattern(self):
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"""Task can be cancelled by ID lookup."""
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tasks = []
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async def long_coro():
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await asyncio.sleep(10)
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return 'done'
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loop = asyncio.get_running_loop()
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wrapper = {'id': 1, 'task': loop.create_task(long_coro())}
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tasks.append(wrapper)
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# Cancel by ID
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task_id = 1
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for w in tasks:
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if w['id'] == task_id:
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w['task'].cancel()
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await asyncio.sleep(0.01)
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assert wrapper['task'].cancelled() or wrapper['task'].done()
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@pytest.mark.asyncio
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async def test_stats_calculation_pattern(self):
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"""Stats count running/completed tasks."""
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tasks = []
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async def quick():
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return 'done'
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loop = asyncio.get_running_loop()
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for i in range(3):
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wrapper = {'id': i, 'task': loop.create_task(quick())}
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tasks.append(wrapper)
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await wrapper['task']
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completed = sum(1 for w in tasks if w['task'].done())
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assert completed == 3
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@pytest.mark.asyncio
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async def test_pruning_completed_tasks(self):
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"""Completed tasks are pruned when over limit."""
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completed_limit = 5
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tasks = []
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async def quick():
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return 'done'
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loop = asyncio.get_running_loop()
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for i in range(10):
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wrapper = {'id': i, 'task': loop.create_task(quick())}
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tasks.append(wrapper)
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await wrapper['task']
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# Prune
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completed = [w for w in tasks if w['task'].done()]
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overflow = len(completed) - completed_limit
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if overflow > 0:
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remove_ids = {w['id'] for w in completed[:overflow]}
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tasks = [w for w in tasks if w['id'] not in remove_ids]
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remaining_completed = sum(1 for w in tasks if w['task'].done())
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assert remaining_completed <= completed_limit
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class TestScopeBasedCancellation:
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"""Tests for scope-based cancellation pattern."""
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@pytest.mark.asyncio
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async def test_cancel_by_scope_pattern(self):
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"""Tasks can be filtered and cancelled by scope."""
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tasks = []
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async def long():
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await asyncio.sleep(10)
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return 'done'
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loop = asyncio.get_running_loop()
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# Create tasks with different scopes
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platform_task = {
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'id': 1,
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'scopes': ['platform'],
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'task': loop.create_task(long()),
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}
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app_task = {
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'id': 2,
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'scopes': ['application'],
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'task': loop.create_task(long()),
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}
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tasks.extend([platform_task, app_task])
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# Cancel platform scope
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scope = 'platform'
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for w in tasks:
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if not w['task'].done() and scope in w['scopes']:
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w['task'].cancel()
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await asyncio.sleep(0.01)
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assert platform_task['task'].cancelled() or platform_task['task'].done()
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# App task still running (pending)
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class TestTaskTypeFiltering:
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"""Tests for filtering tasks by type/kind."""
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@pytest.mark.asyncio
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async def test_filter_by_type_pattern(self):
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"""Tasks can be filtered by type."""
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tasks = [
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{'id': 1, 'task_type': 'system', 'kind': 'internal'},
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{'id': 2, 'task_type': 'user', 'kind': 'user_action'},
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{'id': 3, 'task_type': 'system', 'kind': 'maintenance'},
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]
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system_tasks = [t for t in tasks if t['task_type'] == 'system']
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user_tasks = [t for t in tasks if t['task_type'] == 'user']
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assert len(system_tasks) == 2
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assert len(user_tasks) == 1
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assert all(t['task_type'] == 'system' for t in system_tasks)
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class TestWaitAllTasks:
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"""Tests for waiting for all tasks."""
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@pytest.mark.asyncio
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async def test_wait_all_pattern(self):
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"""Can wait for all tasks to complete."""
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tasks = []
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async def delayed():
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await asyncio.sleep(0.05)
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return 'delayed'
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loop = asyncio.get_running_loop()
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for i in range(3):
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wrapper = {'id': i, 'task': loop.create_task(delayed())}
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tasks.append(wrapper)
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# Wait for all
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await asyncio.gather(*[w['task'] for w in tasks], return_exceptions=True)
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# All done
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assert all(w['task'].done() for w in tasks)
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