def create_datafile(index):
testfile = path.join(base_path, 'middleware_test%d.txt' % index)
size, sha512sum = get_size_and_sha512sum(testfile)
datafile = DataFile(dataset=dataset,
filename=path.basename(testfile),
size=size,
sha512sum=sha512sum)
datafile.save()
dfo = DataFileObject(
datafile=datafile,
storage_box=s_box,
uri=path.basename(testfile))
dfo.save()
if index != 1:
dfo.verified = False
dfo.save(update_fields=['verified'])
return DataFile.objects.get(pk=datafile.pk)
