def get_frame_info_check(compressed_data,
source_size,
store_size,
block_size,
block_linked,
content_checksum,
block_checksum):
frame_info = lz4frame.get_frame_info(compressed_data)
assert frame_info["content_checksum"] == content_checksum
assert frame_info["block_checksum"] == block_checksum
assert frame_info["skippable"] is False
if store_size is True:
assert frame_info["content_size"] == source_size
else:
assert frame_info["content_size"] == 0
if source_size > frame_info['block_size']:
# More than a single block
assert frame_info["block_linked"] == block_linked
if block_size == lz4frame.BLOCKSIZE_DEFAULT:
assert frame_info["block_size_id"] == lz4frame.BLOCKSIZE_MAX64KB
else:
assert frame_info["block_size_id"] == block_size
def test_compress_without_content_size(self):
input_data = b"2099023098234882923049823094823094898239230982349081231290381209380981203981209381238901283098908123109238098123"
compressed = lz4frame.compress(input_data, content_size_header=False)
frame = lz4frame.get_frame_info(compressed)
self.assertEqual(frame['contentSize'], 0)
decompressed = lz4frame.decompress(compressed)
self.assertEqual(input_data, decompressed)
def test_get_frame_info(self):
input_data = b"2099023098234882923049823094823094898239230982349081231290381209380981203981209381238901283098908123109238098123"
compressed = lz4frame.compress(input_data,
lz4frame.COMPRESSIONLEVEL_MAX,
lz4frame.BLOCKSIZE_MAX64KB,
lz4frame.CONTENTCHECKSUM_DISABLED,
lz4frame.BLOCKMODE_INDEPENDENT,
lz4frame.FRAMETYPE_FRAME)
frame_info = lz4frame.get_frame_info(compressed)
self.assertEqual(
frame_info, {
"blockSizeID": lz4frame.BLOCKSIZE_MAX64KB,
"blockMode": lz4frame.BLOCKMODE_INDEPENDENT,
"contentChecksumFlag": lz4frame.CONTENTCHECKSUM_DISABLED,
"frameType": lz4frame.FRAMETYPE_FRAME,
"contentSize": len(input_data)
})