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blob tests

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This commit is contained in:
Jack Robison 2019-04-04 21:44:40 -04:00
parent 3a916a8e8e
commit 04ddee7d89
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GPG key ID: DF25C68FE0239BB2
2 changed files with 145 additions and 28 deletions
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19
lbrynet/blob/blob_file.py
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@ -163,13 +163,10 @@ class AbstractBlob:
if self.verified.is_set():
return
if self.is_writeable():
if self.get_length() == len(verified_bytes):
self._write_blob(verified_bytes)
self.verified.set()
if self.blob_completed_callback:
await self.blob_completed_callback(self)
else:
raise Exception("length mismatch")
self._write_blob(verified_bytes)
self.verified.set()
if self.blob_completed_callback:
await self.blob_completed_callback(self)
def get_blob_writer(self) -> HashBlobWriter:
fut = asyncio.Future(loop=self.loop)
@ -227,6 +224,12 @@ class BlobBuffer(AbstractBlob):
raise OSError("already have bytes for blob")
self._verified_bytes = BytesIO(blob_bytes)
def delete(self):
if self._verified_bytes:
self._verified_bytes.close()
self._verified_bytes = None
return super().delete()
class BlobFile(AbstractBlob):
"""
@ -238,8 +241,6 @@ class BlobFile(AbstractBlob):
if not blob_directory or not os.path.isdir(blob_directory):
raise OSError(f"invalid blob directory '{blob_directory}'")
super().__init__(loop, blob_hash, length, blob_completed_callback, blob_directory)
if not is_valid_blobhash(blob_hash):
raise InvalidBlobHashError(blob_hash)
self.file_path = os.path.join(self.blob_directory, self.blob_hash)
if self.file_exists:
file_size = int(os.stat(self.file_path).st_size)

154
tests/unit/blob/test_blob_file.py
View file

@ -3,34 +3,150 @@ import tempfile
import shutil
import os
from torba.testcase import AsyncioTestCase
from lbrynet.error import InvalidDataError, InvalidBlobHashError
from lbrynet.conf import Config
from lbrynet.extras.daemon.storage import SQLiteStorage
from lbrynet.blob.blob_manager import BlobManager
from lbrynet.blob.blob_file import BlobFile, BlobBuffer, AbstractBlob
class TestBlobfile(AsyncioTestCase):
async def test_create_blob(self):
blob_hash = "7f5ab2def99f0ddd008da71db3a3772135f4002b19b7605840ed1034c8955431bd7079549e65e6b2a3b9c17c773073ed"
blob_bytes = b'1' * ((2 * 2 ** 20) - 1)
class TestBlob(AsyncioTestCase):
blob_hash = "7f5ab2def99f0ddd008da71db3a3772135f4002b19b7605840ed1034c8955431bd7079549e65e6b2a3b9c17c773073ed"
blob_bytes = b'1' * ((2 * 2 ** 20) - 1)
async def asyncSetUp(self):
self.loop = asyncio.get_running_loop()
def _get_blob(self, blob_class=AbstractBlob, blob_directory=None):
blob = blob_class(self.loop, self.blob_hash, len(self.blob_bytes), blob_directory=blob_directory)
self.assertFalse(blob.get_is_verified())
self.addCleanup(blob.close)
return blob
async def _test_create_blob(self, blob_class=AbstractBlob, blob_directory=None):
blob = self._get_blob(blob_class, blob_directory)
writer = blob.get_blob_writer()
writer.write(self.blob_bytes)
await blob.verified.wait()
self.assertTrue(blob.get_is_verified())
return blob
async def _test_close_writers_on_finished(self, blob_class=AbstractBlob, blob_directory=None):
blob = self._get_blob(blob_class, blob_directory=blob_directory)
writers = [blob.get_blob_writer() for _ in range(5)]
self.assertEqual(5, len(blob.writers))
# test that writing too much causes the writer to fail with InvalidDataError and to be removed
with self.assertRaises(InvalidDataError):
writers[1].write(self.blob_bytes * 2)
await writers[1].finished
await asyncio.sleep(0, loop=self.loop)
self.assertEqual(4, len(blob.writers))
# write the blob
other = writers[2]
writers[3].write(self.blob_bytes)
await blob.verified.wait()
self.assertTrue(blob.get_is_verified())
self.assertEqual(0, len(blob.writers))
with self.assertRaises(IOError):
other.write(self.blob_bytes)
def _test_ioerror_if_length_not_set(self, blob_class=AbstractBlob, blob_directory=None):
blob = blob_class(self.loop, self.blob_hash, blob_directory=blob_directory)
self.addCleanup(blob.close)
writer = blob.get_blob_writer()
with self.assertRaises(IOError):
writer.write(b'')
async def _test_invalid_blob_bytes(self, blob_class=AbstractBlob, blob_directory=None):
blob = blob_class(self.loop, self.blob_hash, len(self.blob_bytes), blob_directory=blob_directory)
self.addCleanup(blob.close)
writer = blob.get_blob_writer()
writer.write(self.blob_bytes[:-4] + b'fake')
with self.assertRaises(InvalidBlobHashError):
await writer.finished
async def test_invalid_blob_bytes(self):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(tmp_dir))
await self._test_invalid_blob_bytes(BlobBuffer)
await self._test_invalid_blob_bytes(BlobFile, tmp_dir)
def test_ioerror_if_length_not_set(self):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(tmp_dir))
self._test_ioerror_if_length_not_set(BlobBuffer)
self._test_ioerror_if_length_not_set(BlobFile, tmp_dir)
async def test_create_blob_file(self):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(tmp_dir))
blob = await self._test_create_blob(BlobFile, tmp_dir)
self.assertIsInstance(blob, BlobFile)
self.assertTrue(os.path.isfile(blob.file_path))
for _ in range(2):
with blob.reader_context() as reader:
self.assertEqual(self.blob_bytes, reader.read())
async def test_create_blob_buffer(self):
blob = await self._test_create_blob(BlobBuffer)
self.assertIsInstance(blob, BlobBuffer)
self.assertIsNotNone(blob._verified_bytes)
# check we can only read the bytes once, and that the buffer is torn down
with blob.reader_context() as reader:
self.assertEqual(self.blob_bytes, reader.read())
self.assertIsNone(blob._verified_bytes)
with self.assertRaises(OSError):
with blob.reader_context() as reader:
self.assertEqual(self.blob_bytes, reader.read())
self.assertIsNone(blob._verified_bytes)
async def test_close_writers_on_finished(self):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(tmp_dir))
await self._test_close_writers_on_finished(BlobBuffer)
await self._test_close_writers_on_finished(BlobFile, tmp_dir)
async def test_delete(self):
blob_buffer = await self._test_create_blob(BlobBuffer)
self.assertIsNotNone(blob_buffer._verified_bytes)
self.assertTrue(blob_buffer.get_is_verified())
blob_buffer.delete()
self.assertIsNone(blob_buffer._verified_bytes)
self.assertFalse(blob_buffer.get_is_verified())
loop = asyncio.get_event_loop()
tmp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(tmp_dir))
storage = SQLiteStorage(Config(), os.path.join(tmp_dir, "lbrynet.sqlite"))
blob_manager = BlobManager(loop, tmp_dir, storage)
await storage.open()
await blob_manager.setup()
# add the blob on the server
blob = blob_manager.get_blob(blob_hash, len(blob_bytes))
self.assertEqual(blob.get_is_verified(), False)
self.assertNotIn(blob_hash, blob_manager.completed_blob_hashes)
blob_file = await self._test_create_blob(BlobFile, tmp_dir)
self.assertTrue(os.path.isfile(blob_file.file_path))
self.assertTrue(blob_file.get_is_verified())
blob_file.delete()
self.assertFalse(os.path.isfile(blob_file.file_path))
self.assertFalse(blob_file.get_is_verified())
async def test_delete_corrupt(self):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(lambda: shutil.rmtree(tmp_dir))
blob = BlobFile(self.loop, self.blob_hash, len(self.blob_bytes), blob_directory=tmp_dir)
writer = blob.get_blob_writer()
writer.write(blob_bytes)
writer.write(self.blob_bytes)
await blob.verified.wait()
self.assertTrue(os.path.isfile(blob.file_path), True)
self.assertEqual(blob.get_is_verified(), True)
self.assertIn(blob_hash, blob_manager.completed_blob_hashes)
blob.close()
blob = BlobFile(self.loop, self.blob_hash, len(self.blob_bytes), blob_directory=tmp_dir)
self.assertTrue(blob.get_is_verified())
with open(blob.file_path, 'wb+') as f:
f.write(b'\x00')
blob = BlobFile(self.loop, self.blob_hash, len(self.blob_bytes), blob_directory=tmp_dir)
self.assertFalse(blob.get_is_verified())
self.assertFalse(os.path.isfile(blob.file_path))
def test_invalid_blob_hash(self):
self.assertRaises(InvalidBlobHashError, BlobBuffer, self.loop, '', len(self.blob_bytes))
self.assertRaises(InvalidBlobHashError, BlobBuffer, self.loop, 'x' * 96, len(self.blob_bytes))
self.assertRaises(InvalidBlobHashError, BlobBuffer, self.loop, 'a' * 97, len(self.blob_bytes))