109 lines
4.1 KiB
Python
109 lines
4.1 KiB
Python
from lbrynet.core.HashBlob import HashBlob, BlobFile
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from lbrynet.core.Error import DownloadCanceledError, InvalidDataError
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from tests.util import mk_db_and_blob_dir, rm_db_and_blob_dir, random_lbry_hash
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from twisted.trial import unittest
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from twisted.internet import defer
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import os
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import time
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class BlobFileTest(unittest.TestCase):
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def setUp(self):
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self.db_dir, self.blob_dir = mk_db_and_blob_dir()
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self.fake_content_len = 64
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self.fake_content = bytearray('0'*self.fake_content_len)
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self.fake_content_hash = '53871b26a08e90cb62142f2a39f0b80de41792322b0ca5602b6eb7b5cf067c49498a7492bb9364bbf90f40c1c5412105'
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def tearDown(self):
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rm_db_and_blob_dir(self.db_dir, self.blob_dir)
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@defer.inlineCallbacks
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def test_good_write_and_read(self):
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# test a write that should succeed
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blob_file = BlobFile(self.blob_dir, self.fake_content_hash, self.fake_content_len)
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self.assertFalse(blob_file.verified)
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writer, finished_d = blob_file.open_for_writing(peer=1)
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writer.write(self.fake_content)
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out = yield finished_d
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self.assertTrue(isinstance(out,HashBlob))
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self.assertTrue(out.verified)
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self.assertEqual(self.fake_content_len, out.get_length())
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# read from the instance used to write to, and verify content
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f = blob_file.open_for_reading()
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c = f.read()
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self.assertEqual(c, self.fake_content)
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self.assertFalse(out.is_downloading())
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# read from newly declared instance, and verify content
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del blob_file
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blob_file = BlobFile(self.blob_dir, self.fake_content_hash, self.fake_content_len)
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self.assertTrue(blob_file.verified)
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f = blob_file.open_for_reading()
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c = f.read()
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self.assertEqual(c, self.fake_content)
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@defer.inlineCallbacks
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def test_delete(self):
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blob_file = BlobFile(self.blob_dir, self.fake_content_hash, self.fake_content_len)
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writer, finished_d = blob_file.open_for_writing(peer=1)
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writer.write(self.fake_content)
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out = yield finished_d
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out = yield blob_file.delete()
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blob_file = BlobFile(self.blob_dir, self.fake_content_hash)
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self.assertFalse(blob_file.verified)
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@defer.inlineCallbacks
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def test_too_much_write(self):
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# writing too much data should result in failure
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expected_length= 16
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content = bytearray('0'*32)
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blob_hash = random_lbry_hash()
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blob_file = BlobFile(self.blob_dir, blob_hash, expected_length)
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writer, finished_d = blob_file.open_for_writing(peer=1)
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writer.write(content)
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out = yield self.assertFailure(finished_d, InvalidDataError)
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@defer.inlineCallbacks
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def test_bad_hash(self):
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# test a write that should fail because its content's hash
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# does not equal the blob_hash
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length= 64
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content = bytearray('0'*length)
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blob_hash = random_lbry_hash()
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blob_file = BlobFile(self.blob_dir, blob_hash, length)
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writer, finished_d = blob_file.open_for_writing(peer=1)
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writer.write(content)
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yield self.assertFailure(finished_d, InvalidDataError)
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@defer.inlineCallbacks
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def test_multiple_writers(self):
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# start first writer and write half way, and then start second writer and write everything
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blob_hash = self.fake_content_hash
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blob_file = BlobFile(self.blob_dir, blob_hash, self.fake_content_len)
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writer_1, finished_d_1 = blob_file.open_for_writing(peer=1)
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writer_1.write(self.fake_content[:self.fake_content_len/2])
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writer_2, finished_d_2 = blob_file.open_for_writing(peer=2)
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writer_2.write(self.fake_content)
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out_2 = yield finished_d_2
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out_1 = yield self.assertFailure(finished_d_1, DownloadCanceledError)
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self.assertTrue(isinstance(out_2,HashBlob))
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self.assertTrue(out_2.verified)
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self.assertEqual(self.fake_content_len, out_2.get_length())
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f = blob_file.open_for_reading()
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c = f.read()
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self.assertEqual(self.fake_content_len, len(c))
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self.assertEqual(bytearray(c), self.fake_content)
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