82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
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import os
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import mock
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import asyncio
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import contextlib
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from lbrynet.stream.descriptor import StreamDescriptor
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from lbrynet.stream.downloader import StreamDownloader
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from lbrynet.dht.node import Node
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from lbrynet.dht.peer import KademliaPeer
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from lbrynet.blob.blob_file import MAX_BLOB_SIZE
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from tests.unit.blob_exchange.test_transfer_blob import BlobExchangeTestBase
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class TestStreamDownloader(BlobExchangeTestBase):
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async def setup_stream(self, blob_count: int = 10):
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self.stream_bytes = b''
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for _ in range(blob_count):
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self.stream_bytes += os.urandom((MAX_BLOB_SIZE - 1))
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# create the stream
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file_path = os.path.join(self.server_dir, "test_file")
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with open(file_path, 'wb') as f:
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f.write(self.stream_bytes)
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descriptor = await StreamDescriptor.create_stream(self.loop, self.server_blob_manager.blob_dir, file_path)
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self.sd_hash = descriptor.calculate_sd_hash()
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self.downloader = StreamDownloader(self.loop, self.client_blob_manager, self.sd_hash, 3, 3, self.client_dir)
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async def _test_transfer_stream(self, blob_count: int, mock_peer_search=None):
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await self.setup_stream(blob_count)
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mock_node = mock.Mock(spec=Node)
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@contextlib.asynccontextmanager
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async def _mock_peer_search(*_):
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async def _gen():
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yield [self.server_from_client]
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return
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yield _gen()
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mock_node.stream_peer_search_junction = mock_peer_search or _mock_peer_search
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self.downloader.download(mock_node)
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await self.downloader.stream_finished_event.wait()
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await self.downloader.stop()
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self.assertTrue(os.path.isfile(self.downloader.output_path))
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with open(self.downloader.output_path, 'rb') as f:
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self.assertEqual(f.read(), self.stream_bytes)
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async def test_transfer_stream(self):
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await self._test_transfer_stream(10)
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async def test_transfer_hundred_blob_stream(self):
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await self._test_transfer_stream(100)
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async def test_transfer_stream_bad_first_peer_good_second(self):
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await self.setup_stream(2)
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mock_node = mock.Mock(spec=Node)
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bad_peer = KademliaPeer(self.loop, "127.0.0.1", b'2' * 48, tcp_port=3334)
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@contextlib.asynccontextmanager
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async def mock_peer_search(*_):
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async def _gen():
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await asyncio.sleep(0.05, loop=self.loop)
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yield [bad_peer]
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await asyncio.sleep(0.1, loop=self.loop)
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yield [self.server_from_client]
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return
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yield _gen()
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mock_node.stream_peer_search_junction = mock_peer_search
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self.downloader.download(mock_node)
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await self.downloader.stream_finished_event.wait()
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await self.downloader.stop()
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self.assertTrue(os.path.isfile(self.downloader.output_path))
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with open(self.downloader.output_path, 'rb') as f:
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self.assertEqual(f.read(), self.stream_bytes)
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# self.assertIs(self.server_from_client.tcp_last_down, None)
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# self.assertIsNot(bad_peer.tcp_last_down, None)
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