1 files changed, 147 insertions, 0 deletions
diff --git a/versionsTest/test-lz4-versions.py b/versionsTest/test-lz4-versions.py
new file mode 100644
index 0000000..caf1922
--- /dev/null
+++ b/versionsTest/test-lz4-versions.py
@@ -0,0 +1,147 @@
+#!/usr/bin/env python3
+
+import glob
+import subprocess
+import filecmp
+import os
+import shutil
+import sys
+import hashlib
+
+repo_url = 'https://github.com/Cyan4973/lz4.git'
+tmp_dir_name = 'versionsTest/lz4test'
+make_cmd = 'make'
+git_cmd = 'git'
+test_dat_src = 'README.md'
+test_dat = 'test_dat'
+head = 'r999'
+
+def proc(cmd_args, pipe=True, dummy=False):
+    if dummy:
+        return
+    if pipe:
+        subproc = subprocess.Popen(cmd_args,
+                                   stdout=subprocess.PIPE, 
+                                   stderr=subprocess.PIPE)
+    else:
+        subproc = subprocess.Popen(cmd_args)
+    return subproc.communicate()
+
+def make(args, pipe=True):
+    return proc([make_cmd] + args, pipe)
+
+def git(args, pipe=True):
+    return proc([git_cmd] + args, pipe)
+
+def get_git_tags():
+    stdout, stderr = git(['tag', '-l', 'r[0-9][0-9][0-9]'])
+    tags = stdout.decode('utf-8').split()
+    return tags
+
+# http://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/versionsTest/lz4test
+    clone_dir = tmp_dir + '/' + 'lz4'        # /path/to/lz4/versionsTest/lz4test/lz4
+    programs_dir = base_dir + '/programs'    # /path/to/lz4/programs
+    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])
+
+    shutil.copy2(base_dir + '/' + test_dat_src, tmp_dir + '/' + test_dat)
+
+    # Retrieve all release tags
+    print('Retrieve all release tags :')
+    os.chdir(clone_dir)
+    tags = [head] + get_git_tags()
+    print(tags);
+
+    # Build all release lz4c and lz4c32
+    for tag in tags:
+        os.chdir(base_dir)
+        dst_lz4c   = '{}/lz4c.{}'  .format(tmp_dir, tag) # /path/to/lz4/test/lz4test/lz4c.<TAG>
+        dst_lz4c32 = '{}/lz4c32.{}'.format(tmp_dir, tag) # /path/to/lz4/test/lz4test/lz4c32.<TAG>
+        if not os.path.isfile(dst_lz4c) or not os.path.isfile(dst_lz4c32) or tag == head:
+            if tag != head:
+                r_dir = '{}/{}'.format(tmp_dir, tag)  # /path/to/lz4/test/lz4test/<TAG>
+                os.makedirs(r_dir, exist_ok=True)
+                os.chdir(clone_dir)
+                git(['--work-tree=' + r_dir, 'checkout', tag, '--', '.'], False)
+                os.chdir(r_dir + '/programs')  # /path/to/lz4/lz4test/<TAG>/programs
+                make(['clean', 'lz4c', 'lz4c32'], False)
+            else:
+                os.chdir(programs_dir)
+                make(['lz4c', 'lz4c32'], False)
+            shutil.copy2('lz4c',   dst_lz4c)
+            shutil.copy2('lz4c32', dst_lz4c32)
+
+    # Compress test.dat by all released lz4c and lz4c32
+    print('Compress test.dat by all released lz4c and lz4c32')
+    os.chdir(tmp_dir)
+    for lz4 in glob.glob("*.lz4"):
+        os.remove(lz4)
+    for tag in tags:
+        proc(['./lz4c.'   + tag, '-1fz', test_dat, test_dat + '_1_64_' + tag + '.lz4'])
+        proc(['./lz4c.'   + tag, '-9fz', test_dat, test_dat + '_9_64_' + tag + '.lz4'])
+        proc(['./lz4c32.' + tag, '-1fz', test_dat, test_dat + '_1_32_' + tag + '.lz4'])
+        proc(['./lz4c32.' + tag, '-9fz', test_dat, test_dat + '_9_32_' + tag + '.lz4'])
+
+    print('Full list of compressed files')
+    lz4s = sorted(glob.glob('*.lz4'))
+    for lz4 in lz4s:
+        print(lz4 + ' : ' + repr(os.path.getsize(lz4)))
+
+    # Remove duplicated .lz4 files
+    print('')
+    print('Duplicated files')
+    lz4s = sorted(glob.glob('*.lz4'))
+    for i, lz4 in enumerate(lz4s):
+        if not os.path.isfile(lz4):
+            continue
+        for j in range(i+1, len(lz4s)):
+            lz4t = lz4s[j]
+            if not os.path.isfile(lz4t):
+                continue
+            if filecmp.cmp(lz4, lz4t):
+                os.remove(lz4t)
+                print('{} == {}'.format(lz4, lz4t))
+
+    print('Enumerate only different compressed files')
+    lz4s = sorted(glob.glob('*.lz4'))
+    for lz4 in lz4s:
+        print(lz4 + ' : ' + repr(os.path.getsize(lz4)) + ', ' + sha1_of_file(lz4))
+
+    # Decompress remained .lz4 files by all released lz4c and lz4c32
+    print('Decompression tests and verifications')
+    lz4s = sorted(glob.glob('*.lz4'))
+    for dec in glob.glob("*.dec"):
+        os.remove(dec)
+    for lz4 in lz4s:
+        print(lz4, end=" ")
+        for tag in tags:
+            print(tag, end=" ")
+            proc(['./lz4c.'   + tag, '-df', lz4, lz4 + '_d64_' + tag + '.dec'])
+            proc(['./lz4c32.' + tag, '-df', lz4, lz4 + '_d32_' + tag + '.dec'])
+        print(' OK')   # well, here, decompression has worked; but file is not yet verified
+
+    # Compare all '.dec' files with test_dat
+    decs = glob.glob('*.dec')
+    for dec in decs:
+        if not filecmp.cmp(dec, test_dat):
+            print('ERR : ' + dec)
+            error_code = 1
+        else:
+            print('OK  : ' + dec)
+            os.remove(dec)
+
+    if error_code != 0:
+        print('ERROR')
+
+    sys.exit(error_code)