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	This PR is tantamount to running:
    python3.8 -m com2ann -v 6 tests/
(com2ann requires python 3.8 to run)
		
	
			
		
			
				
	
	
		
			90 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			90 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
from unittest.mock import Mock
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from synapse.storage.background_updates import BackgroundUpdater
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from tests import unittest
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class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
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    def prepare(self, reactor, clock, homeserver):
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        self.updates: BackgroundUpdater = self.hs.get_datastore().db_pool.updates
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        # the base test class should have run the real bg updates for us
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        self.assertTrue(
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            self.get_success(self.updates.has_completed_background_updates())
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        )
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        self.update_handler = Mock()
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        self.updates.register_background_update_handler(
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            "test_update", self.update_handler
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        )
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    def test_do_background_update(self):
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        # the time we claim each update takes
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        duration_ms = 42
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        # the target runtime for each bg update
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        target_background_update_duration_ms = 50000
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        store = self.hs.get_datastore()
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        self.get_success(
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            store.db_pool.simple_insert(
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                "background_updates",
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                values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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            )
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        )
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        # first step: make a bit of progress
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        async def update(progress, count):
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            await self.clock.sleep((count * duration_ms) / 1000)
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            progress = {"my_key": progress["my_key"] + 1}
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            await store.db_pool.runInteraction(
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                "update_progress",
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                self.updates._background_update_progress_txn,
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                "test_update",
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                progress,
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            )
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            return count
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        self.update_handler.side_effect = update
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        self.update_handler.reset_mock()
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        res = self.get_success(
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            self.updates.do_next_background_update(
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                target_background_update_duration_ms
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            ),
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            by=0.1,
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        )
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        self.assertFalse(res)
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        # on the first call, we should get run with the default background update size
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        self.update_handler.assert_called_once_with(
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            {"my_key": 1}, self.updates.DEFAULT_BACKGROUND_BATCH_SIZE
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        )
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        # second step: complete the update
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        # we should now get run with a much bigger number of items to update
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        async def update(progress, count):
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            self.assertEqual(progress, {"my_key": 2})
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            self.assertAlmostEqual(
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                count,
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                target_background_update_duration_ms / duration_ms,
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                places=0,
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            )
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            await self.updates._end_background_update("test_update")
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            return count
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        self.update_handler.side_effect = update
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        self.update_handler.reset_mock()
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        result = self.get_success(
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            self.updates.do_next_background_update(target_background_update_duration_ms)
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        )
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        self.assertFalse(result)
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        self.update_handler.assert_called_once()
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        # third step: we don't expect to be called any more
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        self.update_handler.reset_mock()
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        result = self.get_success(
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            self.updates.do_next_background_update(target_background_update_duration_ms)
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        )
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        self.assertTrue(result)
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        self.assertFalse(self.update_handler.called)
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