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#!/usr/bin/env python3
"""Test LZ4 interoperability between versions"""
#
# Copyright (C) 2011-present, Takayuki Matsuoka
# All rights reserved.
# GPL v2 License
#
import glob
import subprocess
import filecmp
import os
import shutil
import sys
import hashlib
repo_url = 'https://github.com/lz4/lz4.git'
tmp_dir_name = 'tests/abiTests'
env_flags = ' ' # '-j MOREFLAGS="-g -O0 -fsanitize=address"'
make_cmd = 'make'
git_cmd = 'git'
test_dat_src = ['README.md']
head = 'v999'
def proc(cmd_args, pipe=True, env=False):
if env == False:
env = os.environ.copy()
if pipe:
s = subprocess.Popen(cmd_args,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env = env)
else:
s = subprocess.Popen(cmd_args, env = env)
r = s.communicate()
if s.poll() != 0:
print(' s.poll() = ', s.poll())
sys.exit(1)
return r
def make(args, pipe=True, env=False):
if env == False:
env = os.environ.copy()
# we want the address sanitizer for abi tests
env["MOREFLAGS"] = "-fsanitize=address"
return proc([make_cmd] + ['-j'] + ['V=1'] + args, pipe, env)
def git(args, pipe=True):
return proc([git_cmd] + args, pipe)
def get_git_tags():
# Only start from first v1.7.x format release
stdout, stderr = git(['tag', '-l', 'v[1-9].[0-9].[0-9]'])
tags = stdout.decode('utf-8').split()
return tags
# https://stackoverflow.com/a/19711609/2132223
def sha1_of_file(filepath):
with open(filepath, 'rb') as f:
return hashlib.sha1(f.read()).hexdigest()
if __name__ == '__main__':
error_code = 0
base_dir = os.getcwd() + '/..' # /path/to/lz4
tmp_dir = base_dir + '/' + tmp_dir_name # /path/to/lz4/tests/versionsTest
clone_dir = tmp_dir + '/' + 'lz4' # /path/to/lz4/tests/versionsTest/lz4
lib_dir = base_dir + '/lib' # /path/to/lz4/lib
test_dir = base_dir + '/tests'
os.makedirs(tmp_dir, exist_ok=True)
# since Travis clones limited depth, we should clone full repository
if not os.path.isdir(clone_dir):
git(['clone', repo_url, clone_dir])
# Retrieve all release tags
print('Retrieve release tags >= v1.7.5 :')
os.chdir(clone_dir)
tags = [head] + get_git_tags()
tags = [x for x in tags if (x >= 'v1.7.5')]
print(tags)
# loop across architectures
for march in ['-m64', '-m32', '-mx32']:
print(' ')
print('=====================================')
print('Testing architecture ' + march);
print('=====================================')
# Build all versions of liblz4
# note : naming scheme only works on Linux
for tag in tags:
print('building library ', tag)
os.chdir(base_dir)
# if not os.path.isfile(dst_liblz4) or tag == head:
if tag != head:
r_dir = '{}/{}'.format(tmp_dir, tag) # /path/to/lz4/test/lz4test/<TAG>
#print('r_dir = ', r_dir) # for debug
os.makedirs(r_dir, exist_ok=True)
os.chdir(clone_dir)
git(['--work-tree=' + r_dir, 'checkout', tag, '--', '.'])
os.chdir(r_dir + '/lib') # /path/to/lz4/lz4test/<TAG>/lib
else:
# print('lib_dir = {}', lib_dir) # for debug
os.chdir(lib_dir)
make(['clean'])
build_env = os.environ.copy()
build_env["CFLAGS"] = march
build_env["MOREFLAGS"] = "-fsanitize=address"
make(['liblz4'], env=build_env)
print(' ')
print('******************************')
print('Round trip expecting current ABI but linking to older Dynamic Library version')
print('******************************')
os.chdir(test_dir)
# Start with matching version : should be no problem
build_env = os.environ.copy()
build_env["CFLAGS"] = march
build_env["LDFLAGS"] = "-L../lib"
build_env["LDLIBS"] = "-llz4"
# we use asan to detect any out-of-bound read or write
build_env["MOREFLAGS"] = "-fsanitize=address"
if os.path.isfile('abiTest'):
os.remove('abiTest')
make(['abiTest'], env=build_env, pipe=False)
for tag in tags:
print('linking to lib tag = ', tag)
run_env = os.environ.copy()
if tag == head:
run_env["LD_LIBRARY_PATH"] = '../lib'
else:
run_env["LD_LIBRARY_PATH"] = 'abiTests/{}/lib'.format(tag)
# check we are linking to the right library version at run time
proc(['./check_liblz4_version.sh'] + ['./abiTest'], pipe=False, env=run_env)
# now run with mismatched library version
proc(['./abiTest'] + test_dat_src, pipe=False, env=run_env)
print(' ')
print('******************************')
print('Round trip using current Dynamic Library expecting older ABI version')
print('******************************')
for tag in tags:
print(' ')
print('building using older lib ', tag)
build_env = os.environ.copy()
if tag != head:
build_env["CPPFLAGS"] = '-IabiTests/{}/lib'.format(tag)
build_env["LDFLAGS"] = '-LabiTests/{}/lib'.format(tag)
else:
build_env["CPPFLAGS"] = '-I../lib'
build_env["LDFLAGS"] = '-L../lib'
build_env["LDLIBS"] = "-llz4"
build_env["CFLAGS"] = march
build_env["MOREFLAGS"] = "-fsanitize=address"
os.remove('abiTest')
make(['abiTest'], pipe=False, env=build_env)
print('run with CURRENT library version (head)')
run_env = os.environ.copy()
run_env["LD_LIBRARY_PATH"] = '../lib'
# check we are linking to the right library version at run time
proc(['./check_liblz4_version.sh'] + ['./abiTest'], pipe=False, env=run_env)
# now run with mismatched library version
proc(['./abiTest'] + test_dat_src, pipe=False, env=run_env)
if error_code != 0:
print('ERROR')
sys.exit(error_code)
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