s3-tests/s3tests/tests/test_realistic.py

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import realistic
import shutil
import tempfile
# XXX not used for now
def create_files(mean=2000):
return realistic.files2(
mean=1024 * mean,
stddev=1024 * 500,
seed=1256193726,
numfiles=4,
)
class TestFiles(object):
# the size and seed is what we can get when generating a bunch of files
# with pseudo random numbers based on sttdev, seed, and mean.
# this fails, demonstrating the problem
def test_random_file_invalid(self):
size = 2506764
seed = 3391518755
source = realistic.RandomContentFile(size=size, seed=seed)
t = tempfile.SpooledTemporaryFile()
shutil.copyfileobj(source, t)
precomputed = realistic.PrecomputedContentFile(t)
verifier = realistic.FileVerifier()
shutil.copyfileobj(precomputed, verifier)
assert verifier.valid()
# this passes
def test_random_file_valid(self):
size = 2506001
seed = 3391518755
source = realistic.RandomContentFile(size=size, seed=seed)
t = tempfile.SpooledTemporaryFile()
shutil.copyfileobj(source, t)
precomputed = realistic.PrecomputedContentFile(t)
verifier = realistic.FileVerifier()
shutil.copyfileobj(precomputed, verifier)
assert verifier.valid()