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#! /usr/bin/env python3
import subprocess
import time
import glob
import os
import tempfile
import unittest
SIZES = [3, 11] # Always 2 sizes
MIB = 1048576
LZ4 = os.path.dirname(os.path.realpath(__file__)) + "/../lz4"
if not os.path.exists(LZ4):
LZ4 = os.path.dirname(os.path.realpath(__file__)) + "/../programs/lz4"
TEMP = tempfile.gettempdir()
class NVerboseFileInfo(object):
def __init__(self, line_in):
self.line = line_in
splitlines = line_in.split()
if len(splitlines) != 7:
errout("Unexpected line: {}".format(line_in))
self.frames, self.type, self.block, self.compressed, self.uncompressed, self.ratio, self.filename = splitlines
self.exp_unc_size = 0
# Get real file sizes
if "concat-all" in self.filename or "2f--content-size" in self.filename:
for i in SIZES:
self.exp_unc_size += os.path.getsize("{}/test_list_{}M".format(TEMP, i))
else:
uncompressed_filename = self.filename.split("-")[0]
self.exp_unc_size += os.path.getsize("{}/{}".format(TEMP, uncompressed_filename))
self.exp_comp_size = os.path.getsize("{}/{}".format(TEMP, self.filename))
class TestNonVerbose(unittest.TestCase):
@classmethod
def setUpClass(self):
self.nvinfo_list = []
for i, line in enumerate(execute("{} --list -m {}/test_list_*.lz4".format(LZ4, TEMP), print_output=True)):
if i > 0:
self.nvinfo_list.append(NVerboseFileInfo(line))
def test_frames(self):
all_concat_frames = 0
all_concat_index = None
for i, nvinfo in enumerate(self.nvinfo_list):
if "concat-all" in nvinfo.filename:
all_concat_index = i
elif "2f--content-size" in nvinfo.filename:
self.assertEqual("2", nvinfo.frames, nvinfo.line)
all_concat_frames += 2
else:
self.assertEqual("1", nvinfo.frames, nvinfo.line)
all_concat_frames += 1
self.assertNotEqual(None, all_concat_index, "Couldn't find concat-all file index.")
self.assertEqual(self.nvinfo_list[all_concat_index].frames, str(all_concat_frames), self.nvinfo_list[all_concat_index].line)
def test_frame_types(self):
for nvinfo in self.nvinfo_list:
if "-lz4f-" in nvinfo.filename:
self.assertEqual(nvinfo.type, "LZ4Frame", nvinfo.line)
elif "-legc-" in nvinfo.filename:
self.assertEqual(nvinfo.type, "LegacyFrame", nvinfo.line)
elif "-skip-" in nvinfo.filename:
self.assertEqual(nvinfo.type, "SkippableFrame", nvinfo.line)
def test_block(self):
for nvinfo in self.nvinfo_list:
# if "-leg" in nvinfo.filename or "-skip" in nvinfo.filename:
# self.assertEqual(nvinfo.block, "-", nvinfo.line)
if "--BD" in nvinfo.filename:
self.assertRegex(nvinfo.block, "^B[0-9]+D$", nvinfo.line)
elif "--BI" in nvinfo.filename:
self.assertRegex(nvinfo.block, "^B[0-9]+I$", nvinfo.line)
def test_compressed_size(self):
for nvinfo in self.nvinfo_list:
self.assertEqual(nvinfo.compressed, to_human(nvinfo.exp_comp_size), nvinfo.line)
def test_ratio(self):
for nvinfo in self.nvinfo_list:
if "--content-size" in nvinfo.filename:
self.assertEqual(nvinfo.ratio, "{:.2f}%".format(float(nvinfo.exp_comp_size) / float(nvinfo.exp_unc_size) * 100), nvinfo.line)
def test_uncompressed_size(self):
for nvinfo in self.nvinfo_list:
if "--content-size" in nvinfo.filename:
self.assertEqual(nvinfo.uncompressed, to_human(nvinfo.exp_unc_size), nvinfo.line)
class VerboseFileInfo(object):
def __init__(self, lines):
# Parse lines
self.frame_list = []
self.file_frame_map = []
for i, line in enumerate(lines):
if i == 0:
self.filename = line
continue
elif i == 1:
# Skip header
continue
frame_info = dict(zip(["frame", "type", "block", "checksum", "compressed", "uncompressed", "ratio"], line.split()))
frame_info["line"] = line
self.frame_list.append(frame_info)
class TestVerbose(unittest.TestCase):
@classmethod
def setUpClass(self):
# Even do we're listing 2 files to test multiline working as expected.
# we're only really interested in testing the output of the concat-all file.
self.vinfo_list = []
start = end = 0
output = execute("{} --list -m -v {}/test_list_concat-all.lz4 {}/test_list_*M-lz4f-2f--content-size.lz4".format(LZ4, TEMP, TEMP), print_output=True)
for i, line in enumerate(output):
if line.startswith("test_list"):
if start != 0 and end != 0:
self.vinfo_list.append(VerboseFileInfo(output[start:end]))
start = i
if not line:
end = i
self.vinfo_list.append(VerboseFileInfo(output[start:end]))
# Populate file_frame_map as a reference of the expected info
concat_file_list = glob.glob("/tmp/test_list_[!concat]*.lz4")
# One of the files has 2 frames so duplicate it in this list to map each frame 1 to a single file
for i, filename in enumerate(concat_file_list):
if "2f--content-size" in filename:
concat_file_list.insert(i, filename)
break
self.cvinfo = self.vinfo_list[0]
self.cvinfo.file_frame_map = concat_file_list
self.cvinfo.compressed_size = os.path.getsize("{}/test_list_concat-all.lz4".format(TEMP))
def test_filename(self):
for i, vinfo in enumerate(self.vinfo_list):
self.assertRegex(vinfo.filename, "^test_list_.*({}/{})".format(i + 1, len(self.vinfo_list)))
def test_frame_number(self):
for vinfo in self.vinfo_list:
for i, frame_info in enumerate(vinfo.frame_list):
self.assertEqual(frame_info["frame"], str(i + 1), frame_info["line"])
def test_frame_type(self):
for i, frame_info in enumerate(self.cvinfo.frame_list):
if "-lz4f-" in self.cvinfo.file_frame_map[i]:
self.assertEqual(self.cvinfo.frame_list[i]["type"], "LZ4Frame", self.cvinfo.frame_list[i]["line"])
elif "-legc-" in self.cvinfo.file_frame_map[i]:
self.assertEqual(self.cvinfo.frame_list[i]["type"], "LegacyFrame", self.cvinfo.frame_list[i]["line"])
elif "-skip-" in self.cvinfo.file_frame_map[i]:
self.assertEqual(self.cvinfo.frame_list[i]["type"], "SkippableFrame", self.cvinfo.frame_list[i]["line"])
def test_block(self):
for i, frame_info in enumerate(self.cvinfo.frame_list):
if "--BD" in self.cvinfo.file_frame_map[i]:
self.assertRegex(self.cvinfo.frame_list[i]["block"], "^B[0-9]+D$", self.cvinfo.frame_list[i]["line"])
elif "--BI" in self.cvinfo.file_frame_map[i]:
self.assertEqual(self.cvinfo.frame_list[i]["block"], "^B[0-9]+I$", self.cvinfo.frame_list[i]["line"])
def test_checksum(self):
for i, frame_info in enumerate(self.cvinfo.frame_list):
if "-lz4f-" in self.cvinfo.file_frame_map[i] and "--no-frame-crc" not in self.cvinfo.file_frame_map[i]:
self.assertEqual(self.cvinfo.frame_list[i]["checksum"], "XXH32", self.cvinfo.frame_list[i]["line"])
def test_compressed(self):
total = 0
for i, frame_info in enumerate(self.cvinfo.frame_list):
if "-2f-" not in self.cvinfo.file_frame_map[i]:
expected_size = os.path.getsize(self.cvinfo.file_frame_map[i])
self.assertEqual(self.cvinfo.frame_list[i]["compressed"], str(expected_size), self.cvinfo.frame_list[i]["line"])
total += int(self.cvinfo.frame_list[i]["compressed"])
self.assertEqual(total, self.cvinfo.compressed_size, "Expected total sum ({}) to match {} filesize".format(total, self.cvinfo.filename))
def test_uncompressed(self):
for i, frame_info in enumerate(self.cvinfo.frame_list):
ffm = self.cvinfo.file_frame_map[i]
if "-2f-" not in ffm and "--content-size" in ffm:
expected_size_unc = int(ffm[ffm.rindex("_") + 1:ffm.index("M")]) * 1048576
self.assertEqual(self.cvinfo.frame_list[i]["uncompressed"], str(expected_size_unc), self.cvinfo.frame_list[i]["line"])
def test_ratio(self):
for i, frame_info in enumerate(self.cvinfo.frame_list):
if "--content-size" in self.cvinfo.file_frame_map[i]:
self.assertEqual(self.cvinfo.frame_list[i]['ratio'],
"{:.2f}%".format(float(self.cvinfo.frame_list[i]['compressed']) / float(self.cvinfo.frame_list[i]['uncompressed']) * 100),
self.cvinfo.frame_list[i]["line"])
def to_human(size):
for unit in ['', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y']:
if size < 1024.0:
break
size /= 1024.0
return "{:.2f}{}".format(size, unit)
def log(text):
print(time.strftime("%Y/%m/%d %H:%M:%S") + ' - ' + text)
def errout(text, err=1):
log(text)
exit(err)
def execute(command, print_command=True, print_output=False, print_error=True, param_shell=True):
if os.environ.get('QEMU_SYS'):
command = "{} {}".format(os.environ['QEMU_SYS'], command)
if print_command:
log("> " + command)
popen = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=param_shell)
stdout_lines, stderr_lines = popen.communicate()
stderr_lines = stderr_lines.decode("utf-8")
stdout_lines = stdout_lines.decode("utf-8")
if print_output:
if stdout_lines:
print(stdout_lines)
if stderr_lines:
print(stderr_lines)
if popen.returncode is not None and popen.returncode != 0:
if stderr_lines and not print_output and print_error:
print(stderr_lines)
errout("Failed to run: {}\n".format(command, stdout_lines + stderr_lines))
return (stdout_lines + stderr_lines).splitlines()
def cleanup(silent=False):
for f in glob.glob("{}/test_list*".format(TEMP)):
if not silent:
log("Deleting {}".format(f))
os.unlink(f)
def datagen(file_name, size):
non_sparse_size = size // 2
sparse_size = size - non_sparse_size
with open(file_name, "wb") as f:
f.seek(sparse_size)
f.write(os.urandom(non_sparse_size))
def generate_files():
# file format ~ test_list<frametype>-<no_frames>f<create-args>.lz4 ~
# Generate LZ4Frames
for i in SIZES:
filename = "{}/test_list_{}M".format(TEMP, i)
log("Generating {}".format(filename))
datagen(filename, i * MIB)
for j in ["--content-size", "-BI", "-BD", "-BX", "--no-frame-crc"]:
lz4file = "{}-lz4f-1f{}.lz4".format(filename, j)
execute("{} {} {} {}".format(LZ4, j, filename, lz4file))
# Generate skippable frames
lz4file = "{}-skip-1f.lz4".format(filename)
skipsize = i * 1024
skipbytes = bytes([80, 42, 77, 24]) + skipsize.to_bytes(4, byteorder='little', signed=False)
with open(lz4file, 'wb') as f:
f.write(skipbytes)
f.write(os.urandom(skipsize))
# Generate legacy frames
lz4file = "{}-legc-1f.lz4".format(filename)
execute("{} -l {} {}".format(LZ4, filename, lz4file))
# Concatenate --content-size files
file_list = glob.glob("{}/test_list_*-lz4f-1f--content-size.lz4".format(TEMP))
with open("{}/test_list_{}M-lz4f-2f--content-size.lz4".format(TEMP, sum(SIZES)), 'ab') as outfile:
for fname in file_list:
with open(fname, 'rb') as infile:
outfile.write(infile.read())
# Concatenate all files
file_list = glob.glob("{}/test_list_*.lz4".format(TEMP))
with open("{}/test_list_concat-all.lz4".format(TEMP), 'ab') as outfile:
for fname in file_list:
with open(fname, 'rb') as infile:
outfile.write(infile.read())
if __name__ == '__main__':
cleanup()
generate_files()
unittest.main(verbosity=2, exit=False)
cleanup(silent=True)
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