lib/bup/t/tgit.py

   1
   2 from __future__ import absolute_import, print_function
   3 from subprocess import check_call
   4 import struct, os, time
   5
   6 from wvtest import *
   7
   8 from bup import git, path
   9 from bup.compat import range
  10 from bup.helpers import localtime, log, mkdirp, readpipe
  11 from buptest import no_lingering_errors, test_tempdir
  12
  13
  14 bup_exe = path.exe()
  15
  16
  17 def exc(*cmd):
  18     cmd_str = ' '.join(cmd)
  19     print(cmd_str, file=sys.stderr)
  20     check_call(cmd)
  21
  22
  23 def exo(*cmd):
  24     cmd_str = ' '.join(cmd)
  25     print(cmd_str, file=sys.stderr)
  26     return readpipe(cmd)
  27
  28
  29 @wvtest
  30 def testmangle():
  31     with no_lingering_errors():
  32         afile  = 0o100644
  33         afile2 = 0o100770
  34         alink  = 0o120000
  35         adir   = 0o040000
  36         adir2  = 0o040777
  37         WVPASSEQ(git.mangle_name("a", adir2, adir), "a")
  38         WVPASSEQ(git.mangle_name(".bup", adir2, adir), ".bup.bupl")
  39         WVPASSEQ(git.mangle_name("a.bupa", adir2, adir), "a.bupa.bupl")
  40         WVPASSEQ(git.mangle_name("b.bup", alink, alink), "b.bup.bupl")
  41         WVPASSEQ(git.mangle_name("b.bu", alink, alink), "b.bu")
  42         WVPASSEQ(git.mangle_name("f", afile, afile2), "f")
  43         WVPASSEQ(git.mangle_name("f.bup", afile, afile2), "f.bup.bupl")
  44         WVPASSEQ(git.mangle_name("f.bup", afile, adir), "f.bup.bup")
  45         WVPASSEQ(git.mangle_name("f", afile, adir), "f.bup")
  46
  47         WVPASSEQ(git.demangle_name("f.bup", afile), ("f", git.BUP_CHUNKED))
  48         WVPASSEQ(git.demangle_name("f.bupl", afile), ("f", git.BUP_NORMAL))
  49         WVPASSEQ(git.demangle_name("f.bup.bupl", afile), ("f.bup", git.BUP_NORMAL))
  50
  51         WVPASSEQ(git.demangle_name(".bupm", afile), ('', git.BUP_NORMAL))
  52         WVPASSEQ(git.demangle_name(".bupm", adir), ('', git.BUP_CHUNKED))
  53
  54         # for safety, we ignore .bup? suffixes we don't recognize.  Future
  55         # versions might implement a .bup[a-z] extension as something other
  56         # than BUP_NORMAL.
  57         WVPASSEQ(git.demangle_name("f.bupa", afile), ("f.bupa", git.BUP_NORMAL))
  58
  59
  60 @wvtest
  61 def testencode():
  62     with no_lingering_errors():
  63         s = 'hello world'
  64         looseb = ''.join(git._encode_looseobj('blob', s))
  65         looset = ''.join(git._encode_looseobj('tree', s))
  66         loosec = ''.join(git._encode_looseobj('commit', s))
  67         packb = ''.join(git._encode_packobj('blob', s))
  68         packt = ''.join(git._encode_packobj('tree', s))
  69         packc = ''.join(git._encode_packobj('commit', s))
  70         WVPASSEQ(git._decode_looseobj(looseb), ('blob', s))
  71         WVPASSEQ(git._decode_looseobj(looset), ('tree', s))
  72         WVPASSEQ(git._decode_looseobj(loosec), ('commit', s))
  73         WVPASSEQ(git._decode_packobj(packb), ('blob', s))
  74         WVPASSEQ(git._decode_packobj(packt), ('tree', s))
  75         WVPASSEQ(git._decode_packobj(packc), ('commit', s))
  76         for i in range(10):
  77             WVPASS(git._encode_looseobj('blob', s, compression_level=i))
  78         def encode_pobj(n):
  79             return ''.join(git._encode_packobj('blob', s, compression_level=n))
  80         WVEXCEPT(ValueError, encode_pobj, -1)
  81         WVEXCEPT(ValueError, encode_pobj, 10)
  82         WVEXCEPT(ValueError, encode_pobj, 'x')
  83
  84
  85 @wvtest
  86 def testpacks():
  87     with no_lingering_errors():
  88         with test_tempdir('bup-tgit-') as tmpdir:
  89             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
  90             git.init_repo(bupdir)
  91             git.verbose = 1
  92
  93             w = git.PackWriter()
  94             w.new_blob(os.urandom(100))
  95             w.new_blob(os.urandom(100))
  96             w.abort()
  97
  98             w = git.PackWriter()
  99             hashes = []
 100             nobj = 1000
 101             for i in range(nobj):
 102                 hashes.append(w.new_blob(str(i)))
 103             log('\n')
 104             nameprefix = w.close()
 105             print(repr(nameprefix))
 106             WVPASS(os.path.exists(nameprefix + '.pack'))
 107             WVPASS(os.path.exists(nameprefix + '.idx'))
 108
 109             r = git.open_idx(nameprefix + '.idx')
 110             print(repr(r.fanout))
 111
 112             for i in range(nobj):
 113                 WVPASS(r.find_offset(hashes[i]) > 0)
 114             WVPASS(r.exists(hashes[99]))
 115             WVFAIL(r.exists('\0'*20))
 116
 117             pi = iter(r)
 118             for h in sorted(hashes):
 119                 WVPASSEQ(str(next(pi)).encode('hex'), h.encode('hex'))
 120
 121             WVFAIL(r.find_offset('\0'*20))
 122
 123             r = git.PackIdxList(bupdir + '/objects/pack')
 124             WVPASS(r.exists(hashes[5]))
 125             WVPASS(r.exists(hashes[6]))
 126             WVFAIL(r.exists('\0'*20))
 127
 128
 129 @wvtest
 130 def test_pack_name_lookup():
 131     with no_lingering_errors():
 132         with test_tempdir('bup-tgit-') as tmpdir:
 133             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
 134             git.init_repo(bupdir)
 135             git.verbose = 1
 136             packdir = git.repo('objects/pack')
 137
 138             idxnames = []
 139             hashes = []
 140
 141             for start in range(0,28,2):
 142                 w = git.PackWriter()
 143                 for i in range(start, start+2):
 144                     hashes.append(w.new_blob(str(i)))
 145                 log('\n')
 146                 idxnames.append(os.path.basename(w.close() + '.idx'))
 147
 148             r = git.PackIdxList(packdir)
 149             WVPASSEQ(len(r.packs), 2)
 150             for e,idxname in enumerate(idxnames):
 151                 for i in range(e*2, (e+1)*2):
 152                     WVPASSEQ(r.exists(hashes[i], want_source=True), idxname)
 153
 154
 155 @wvtest
 156 def test_long_index():
 157     with no_lingering_errors():
 158         with test_tempdir('bup-tgit-') as tmpdir:
 159             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
 160             git.init_repo(bupdir)
 161             w = git.PackWriter()
 162             obj_bin = struct.pack('!IIIII',
 163                     0x00112233, 0x44556677, 0x88990011, 0x22334455, 0x66778899)
 164             obj2_bin = struct.pack('!IIIII',
 165                     0x11223344, 0x55667788, 0x99001122, 0x33445566, 0x77889900)
 166             obj3_bin = struct.pack('!IIIII',
 167                     0x22334455, 0x66778899, 0x00112233, 0x44556677, 0x88990011)
 168             pack_bin = struct.pack('!IIIII',
 169                     0x99887766, 0x55443322, 0x11009988, 0x77665544, 0x33221100)
 170             idx = list(list() for i in range(256))
 171             idx[0].append((obj_bin, 1, 0xfffffffff))
 172             idx[0x11].append((obj2_bin, 2, 0xffffffffff))
 173             idx[0x22].append((obj3_bin, 3, 0xff))
 174             w.count = 3
 175             name = tmpdir + '/tmp.idx'
 176             r = w._write_pack_idx_v2(name, idx, pack_bin)
 177             i = git.PackIdxV2(name, open(name, 'rb'))
 178             WVPASSEQ(i.find_offset(obj_bin), 0xfffffffff)
 179             WVPASSEQ(i.find_offset(obj2_bin), 0xffffffffff)
 180             WVPASSEQ(i.find_offset(obj3_bin), 0xff)
 181
 182
 183 @wvtest
 184 def test_check_repo_or_die():
 185     with no_lingering_errors():
 186         with test_tempdir('bup-tgit-') as tmpdir:
 187             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
 188             orig_cwd = os.getcwd()
 189             try:
 190                 os.chdir(tmpdir)
 191                 git.init_repo(bupdir)
 192                 git.check_repo_or_die()
 193                 # if we reach this point the call above passed
 194                 WVPASS('check_repo_or_die')
 195
 196                 os.rename(bupdir + '/objects/pack',
 197                           bupdir + '/objects/pack.tmp')
 198                 open(bupdir + '/objects/pack', 'w').close()
 199                 try:
 200                     git.check_repo_or_die()
 201                 except SystemExit as e:
 202                     WVPASSEQ(e.code, 14)
 203                 else:
 204                     WVFAIL()
 205                 os.unlink(bupdir + '/objects/pack')
 206                 os.rename(bupdir + '/objects/pack.tmp',
 207                           bupdir + '/objects/pack')
 208
 209                 try:
 210                     git.check_repo_or_die('nonexistantbup.tmp')
 211                 except SystemExit as e:
 212                     WVPASSEQ(e.code, 15)
 213                 else:
 214                     WVFAIL()
 215             finally:
 216                 os.chdir(orig_cwd)
 217
 218
 219 @wvtest
 220 def test_commit_parsing():
 221
 222     def restore_env_var(name, val):
 223         if val is None:
 224             del os.environ[name]
 225         else:
 226             os.environ[name] = val
 227
 228     def showval(commit, val):
 229         return readpipe(['git', 'show', '-s',
 230                          '--pretty=format:%s' % val, commit]).strip()
 231
 232     with no_lingering_errors():
 233         with test_tempdir('bup-tgit-') as tmpdir:
 234             orig_cwd = os.getcwd()
 235             workdir = tmpdir + "/work"
 236             repodir = workdir + '/.git'
 237             orig_author_name = os.environ.get('GIT_AUTHOR_NAME')
 238             orig_author_email = os.environ.get('GIT_AUTHOR_EMAIL')
 239             orig_committer_name = os.environ.get('GIT_COMMITTER_NAME')
 240             orig_committer_email = os.environ.get('GIT_COMMITTER_EMAIL')
 241             os.environ['GIT_AUTHOR_NAME'] = 'bup test'
 242             os.environ['GIT_COMMITTER_NAME'] = os.environ['GIT_AUTHOR_NAME']
 243             os.environ['GIT_AUTHOR_EMAIL'] = 'bup@a425bc70a02811e49bdf73ee56450e6f'
 244             os.environ['GIT_COMMITTER_EMAIL'] = os.environ['GIT_AUTHOR_EMAIL']
 245             try:
 246                 readpipe(['git', 'init', workdir])
 247                 os.environ['GIT_DIR'] = os.environ['BUP_DIR'] = repodir
 248                 git.check_repo_or_die(repodir)
 249                 os.chdir(workdir)
 250                 with open('foo', 'w') as f:
 251                     print('bar', file=f)
 252                 readpipe(['git', 'add', '.'])
 253                 readpipe(['git', 'commit', '-am', 'Do something',
 254                           '--author', 'Someone <someone@somewhere>',
 255                           '--date', 'Sat Oct 3 19:48:49 2009 -0400'])
 256                 commit = readpipe(['git', 'show-ref', '-s', 'master']).strip()
 257                 parents = showval(commit, '%P')
 258                 tree = showval(commit, '%T')
 259                 cname = showval(commit, '%cn')
 260                 cmail = showval(commit, '%ce')
 261                 cdate = showval(commit, '%ct')
 262                 coffs = showval(commit, '%ci')
 263                 coffs = coffs[-5:]
 264                 coff = (int(coffs[-4:-2]) * 60 * 60) + (int(coffs[-2:]) * 60)
 265                 if coffs[-5] == '-':
 266                     coff = - coff
 267                 commit_items = git.get_commit_items(commit, git.cp())
 268                 WVPASSEQ(commit_items.parents, [])
 269                 WVPASSEQ(commit_items.tree, tree)
 270                 WVPASSEQ(commit_items.author_name, 'Someone')
 271                 WVPASSEQ(commit_items.author_mail, 'someone@somewhere')
 272                 WVPASSEQ(commit_items.author_sec, 1254613729)
 273                 WVPASSEQ(commit_items.author_offset, -(4 * 60 * 60))
 274                 WVPASSEQ(commit_items.committer_name, cname)
 275                 WVPASSEQ(commit_items.committer_mail, cmail)
 276                 WVPASSEQ(commit_items.committer_sec, int(cdate))
 277                 WVPASSEQ(commit_items.committer_offset, coff)
 278                 WVPASSEQ(commit_items.message, 'Do something\n')
 279                 with open('bar', 'w') as f:
 280                     print('baz', file=f)
 281                 readpipe(['git', 'add', '.'])
 282                 readpipe(['git', 'commit', '-am', 'Do something else'])
 283                 child = readpipe(['git', 'show-ref', '-s', 'master']).strip()
 284                 parents = showval(child, '%P')
 285                 commit_items = git.get_commit_items(child, git.cp())
 286                 WVPASSEQ(commit_items.parents, [commit])
 287             finally:
 288                 os.chdir(orig_cwd)
 289                 restore_env_var('GIT_AUTHOR_NAME', orig_author_name)
 290                 restore_env_var('GIT_AUTHOR_EMAIL', orig_author_email)
 291                 restore_env_var('GIT_COMMITTER_NAME', orig_committer_name)
 292                 restore_env_var('GIT_COMMITTER_EMAIL', orig_committer_email)
 293
 294
 295 @wvtest
 296 def test_new_commit():
 297     with no_lingering_errors():
 298         with test_tempdir('bup-tgit-') as tmpdir:
 299             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
 300             git.init_repo(bupdir)
 301             git.verbose = 1
 302
 303             w = git.PackWriter()
 304             tree = os.urandom(20)
 305             parent = os.urandom(20)
 306             author_name = 'Author'
 307             author_mail = 'author@somewhere'
 308             adate_sec = 1439657836
 309             cdate_sec = adate_sec + 1
 310             committer_name = 'Committer'
 311             committer_mail = 'committer@somewhere'
 312             adate_tz_sec = cdate_tz_sec = None
 313             commit = w.new_commit(tree, parent,
 314                                   '%s <%s>' % (author_name, author_mail),
 315                                   adate_sec, adate_tz_sec,
 316                                   '%s <%s>' % (committer_name, committer_mail),
 317                                   cdate_sec, cdate_tz_sec,
 318                                   'There is a small mailbox here')
 319             adate_tz_sec = -60 * 60
 320             cdate_tz_sec = 120 * 60
 321             commit_off = w.new_commit(tree, parent,
 322                                       '%s <%s>' % (author_name, author_mail),
 323                                       adate_sec, adate_tz_sec,
 324                                       '%s <%s>' % (committer_name, committer_mail),
 325                                       cdate_sec, cdate_tz_sec,
 326                                       'There is a small mailbox here')
 327             w.close()
 328
 329             commit_items = git.get_commit_items(commit.encode('hex'), git.cp())
 330             local_author_offset = localtime(adate_sec).tm_gmtoff
 331             local_committer_offset = localtime(cdate_sec).tm_gmtoff
 332             WVPASSEQ(tree, commit_items.tree.decode('hex'))
 333             WVPASSEQ(1, len(commit_items.parents))
 334             WVPASSEQ(parent, commit_items.parents[0].decode('hex'))
 335             WVPASSEQ(author_name, commit_items.author_name)
 336             WVPASSEQ(author_mail, commit_items.author_mail)
 337             WVPASSEQ(adate_sec, commit_items.author_sec)
 338             WVPASSEQ(local_author_offset, commit_items.author_offset)
 339             WVPASSEQ(committer_name, commit_items.committer_name)
 340             WVPASSEQ(committer_mail, commit_items.committer_mail)
 341             WVPASSEQ(cdate_sec, commit_items.committer_sec)
 342             WVPASSEQ(local_committer_offset, commit_items.committer_offset)
 343
 344             commit_items = git.get_commit_items(commit_off.encode('hex'), git.cp())
 345             WVPASSEQ(tree, commit_items.tree.decode('hex'))
 346             WVPASSEQ(1, len(commit_items.parents))
 347             WVPASSEQ(parent, commit_items.parents[0].decode('hex'))
 348             WVPASSEQ(author_name, commit_items.author_name)
 349             WVPASSEQ(author_mail, commit_items.author_mail)
 350             WVPASSEQ(adate_sec, commit_items.author_sec)
 351             WVPASSEQ(adate_tz_sec, commit_items.author_offset)
 352             WVPASSEQ(committer_name, commit_items.committer_name)
 353             WVPASSEQ(committer_mail, commit_items.committer_mail)
 354             WVPASSEQ(cdate_sec, commit_items.committer_sec)
 355             WVPASSEQ(cdate_tz_sec, commit_items.committer_offset)
 356
 357
 358 @wvtest
 359 def test_list_refs():
 360     with no_lingering_errors():
 361         with test_tempdir('bup-tgit-') as tmpdir:
 362             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
 363             src = tmpdir + '/src'
 364             mkdirp(src)
 365             with open(src + '/1', 'w+') as f:
 366                 print('something', file=f)
 367             with open(src + '/2', 'w+') as f:
 368                 print('something else', file=f)
 369             git.init_repo(bupdir)
 370             emptyset = frozenset()
 371             WVPASSEQ(frozenset(git.list_refs()), emptyset)
 372             WVPASSEQ(frozenset(git.list_refs(limit_to_tags=True)), emptyset)
 373             WVPASSEQ(frozenset(git.list_refs(limit_to_heads=True)), emptyset)
 374             exc(bup_exe, 'index', src)
 375             exc(bup_exe, 'save', '-n', 'src', '--strip', src)
 376             src_hash = exo('git', '--git-dir', bupdir,
 377                            'rev-parse', 'src').strip().split('\n')
 378             assert(len(src_hash) == 1)
 379             src_hash = src_hash[0].decode('hex')
 380             tree_hash = exo('git', '--git-dir', bupdir,
 381                            'rev-parse', 'src:').strip().split('\n')[0].decode('hex')
 382             blob_hash = exo('git', '--git-dir', bupdir,
 383                            'rev-parse', 'src:1').strip().split('\n')[0].decode('hex')
 384             WVPASSEQ(frozenset(git.list_refs()),
 385                      frozenset([('refs/heads/src', src_hash)]))
 386             WVPASSEQ(frozenset(git.list_refs(limit_to_tags=True)), emptyset)
 387             WVPASSEQ(frozenset(git.list_refs(limit_to_heads=True)),
 388                      frozenset([('refs/heads/src', src_hash)]))
 389             exc('git', '--git-dir', bupdir, 'tag', 'commit-tag', 'src')
 390             WVPASSEQ(frozenset(git.list_refs()),
 391                      frozenset([('refs/heads/src', src_hash),
 392                                 ('refs/tags/commit-tag', src_hash)]))
 393             WVPASSEQ(frozenset(git.list_refs(limit_to_tags=True)),
 394                      frozenset([('refs/tags/commit-tag', src_hash)]))
 395             WVPASSEQ(frozenset(git.list_refs(limit_to_heads=True)),
 396                      frozenset([('refs/heads/src', src_hash)]))
 397             exc('git', '--git-dir', bupdir, 'tag', 'tree-tag', 'src:')
 398             exc('git', '--git-dir', bupdir, 'tag', 'blob-tag', 'src:1')
 399             os.unlink(bupdir + '/refs/heads/src')
 400             expected_tags = frozenset([('refs/tags/commit-tag', src_hash),
 401                                        ('refs/tags/tree-tag', tree_hash),
 402                                        ('refs/tags/blob-tag', blob_hash)])
 403             WVPASSEQ(frozenset(git.list_refs()), expected_tags)
 404             WVPASSEQ(frozenset(git.list_refs(limit_to_heads=True)), frozenset([]))
 405             WVPASSEQ(frozenset(git.list_refs(limit_to_tags=True)), expected_tags)
 406
 407
 408 @wvtest
 409 def test__git_date_str():
 410     with no_lingering_errors():
 411         WVPASSEQ('0 +0000', git._git_date_str(0, 0))
 412         WVPASSEQ('0 -0130', git._git_date_str(0, -90 * 60))
 413         WVPASSEQ('0 +0130', git._git_date_str(0, 90 * 60))
 414
 415
 416 @wvtest
 417 def test_cat_pipe():
 418     with no_lingering_errors():
 419         with test_tempdir('bup-tgit-') as tmpdir:
 420             os.environ['BUP_DIR'] = bupdir = tmpdir + "/bup"
 421             src = tmpdir + '/src'
 422             mkdirp(src)
 423             with open(src + '/1', 'w+') as f:
 424                 print('something', file=f)
 425             with open(src + '/2', 'w+') as f:
 426                 print('something else', file=f)
 427             git.init_repo(bupdir)
 428             exc(bup_exe, 'index', src)
 429             oidx = exo(bup_exe, 'save', '-cn', 'src', '--strip', src).strip()
 430             typ = exo('git', '--git-dir', bupdir,
 431                       'cat-file', '-t', 'src').strip()
 432             size = int(exo('git', '--git-dir', bupdir,
 433                                'cat-file', '-s', 'src'))
 434             it = git.cp().get('src')
 435             get_info = it.next()
 436             for buf in it.next():
 437                 pass
 438             WVPASSEQ((oidx, typ, size), get_info)