s3-tests/s3tests_boto3/tests/test_realistic.py

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from s3tests 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 (current) 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)
# assert precomputed.valid()
# 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()
# new implementation
class TestFileValidator(object):
def test_new_file_is_valid(self):
size = 2506001
contents = realistic.generate_file_contents(size)
t = tempfile.SpooledTemporaryFile()
t.write(contents)
t.seek(0)
fp = realistic.FileValidator(t)
assert fp.valid()
def test_new_file_is_valid_when_size_is_1(self):
size = 1
contents = realistic.generate_file_contents(size)
t = tempfile.SpooledTemporaryFile()
t.write(contents)
t.seek(0)
fp = realistic.FileValidator(t)
assert fp.valid()
def test_new_file_is_valid_on_several_calls(self):
size = 2506001
contents = realistic.generate_file_contents(size)
t = tempfile.SpooledTemporaryFile()
t.write(contents)
t.seek(0)
fp = realistic.FileValidator(t)
assert fp.valid()
assert fp.valid()