tests: make tarball output conditional on Python version

Python 3.8 changed the default tar file archive format:
https://docs.python.org/3.8/whatsnew/3.8.html#tarfile.

This commit teaches our tests about the new behavior.

Differential Revision: https://phab.mercurial-scm.org/D6986

tests/test-archive.t

@@ -1,622 +1,626 b''
 #require serve
 
   $ hg init test
   $ cd test
   $ echo foo>foo
   $ hg commit -Am 1 -d '1 0'
   adding foo
   $ echo bar>bar
   $ hg commit -Am 2 -d '2 0'
   adding bar
   $ mkdir baz
   $ echo bletch>baz/bletch
   $ hg commit -Am 3 -d '1000000000 0'
   adding baz/bletch
   $ hg init subrepo
   $ touch subrepo/sub
   $ hg -q -R subrepo ci -Am "init subrepo"
   $ echo "subrepo = subrepo" > .hgsub
   $ hg add .hgsub
   $ hg ci -m "add subrepo"
 
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > share =
   > EOF
 
 hg subrepos are shared when the parent repo is shared
 
   $ cd ..
   $ hg share test shared1
   updating working directory
   sharing subrepo subrepo from $TESTTMP/test/subrepo
   5 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat shared1/subrepo/.hg/sharedpath
   $TESTTMP/test/subrepo/.hg (no-eol)
 
 hg subrepos are shared into existence on demand if the parent was shared
 
   $ hg clone -qr 1 test clone1
   $ hg share clone1 share2
   updating working directory
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R clone1 -q pull
   $ hg -R share2 update tip
   sharing subrepo subrepo from $TESTTMP/test/subrepo
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat share2/subrepo/.hg/sharedpath
   $TESTTMP/test/subrepo/.hg (no-eol)
   $ echo 'mod' > share2/subrepo/sub
   $ hg -R share2 ci -Sqm 'subrepo mod'
   $ hg -R clone1 update -C tip
   cloning subrepo subrepo from $TESTTMP/test/subrepo
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ find share2 | egrep 'sharedpath|00.+\.i' | sort
   share2/.hg/sharedpath
   share2/subrepo/.hg/sharedpath
   $ hg -R share2 unshare
   unsharing subrepo 'subrepo'
   $ find share2 | egrep 'sharedpath|00.+\.i' | sort
   share2/.hg/00changelog.i
   share2/.hg/sharedpath.old
   share2/.hg/store/00changelog.i
   share2/.hg/store/00manifest.i
   share2/subrepo/.hg/00changelog.i
   share2/subrepo/.hg/sharedpath.old
   share2/subrepo/.hg/store/00changelog.i
   share2/subrepo/.hg/store/00manifest.i
   $ hg -R share2/subrepo log -r tip -T compact
   1[tip]   559dcc9bfa65   1970-01-01 00:00 +0000   test
     subrepo mod
   
   $ rm -rf clone1
 
   $ hg clone -qr 1 test clone1
   $ hg share clone1 shared3
   updating working directory
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R clone1 -q pull
   $ hg -R shared3 archive --config ui.archivemeta=False -r tip -S archive
   sharing subrepo subrepo from $TESTTMP/test/subrepo
   $ cat shared3/subrepo/.hg/sharedpath
   $TESTTMP/test/subrepo/.hg (no-eol)
   $ diff -r archive test
   Only in test: .hg
   Common subdirectories: archive/baz and test/baz (?)
   Common subdirectories: archive/subrepo and test/subrepo (?)
   Only in test/subrepo: .hg
   [1]
   $ rm -rf archive
 
   $ cd test
   $ echo "[web]" >> .hg/hgrc
   $ echo "name = test-archive" >> .hg/hgrc
   $ echo "archivesubrepos = True" >> .hg/hgrc
   $ cp .hg/hgrc .hg/hgrc-base
   > test_archtype() {
   >     echo "allow-archive = $1" >> .hg/hgrc
   >     test_archtype_run "$@"
   > }
   > test_archtype_deprecated() {
   >     echo "allow$1 = True" >> .hg/hgrc
   >     test_archtype_run "$@"
   > }
   > test_archtype_run() {
   >     hg serve -p $HGPORT -d --pid-file=hg.pid -E errors.log \
   >         --config extensions.blackbox= --config blackbox.track=develwarn
   >     cat hg.pid >> $DAEMON_PIDS
   >     echo % $1 allowed should give 200
   >     get-with-headers.py --bodyfile body localhost:$HGPORT "archive/tip.$2" -
   >     f --size --sha1 body
   >     echo % $3 and $4 disallowed should both give 403
   >     get-with-headers.py --bodyfile body localhost:$HGPORT "archive/tip.$3" -
   >     f --size --sha1 body
   >     get-with-headers.py --bodyfile body localhost:$HGPORT "archive/tip.$4" -
   >     f --size --sha1 body
   >     killdaemons.py
   >     cat errors.log
   >     hg blackbox --config extensions.blackbox= --config blackbox.track=
   >     cp .hg/hgrc-base .hg/hgrc
   > }
 
 check http return codes
 
   $ test_archtype gz tar.gz tar.bz2 zip
   % gz allowed should give 200
   200 Script output follows
   content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.gz
   content-type: application/x-gzip
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
-  body: size=408, sha1=8fa06531bddecc365a9f5edb0f88b65974bfe505
+  body: size=408, sha1=8fa06531bddecc365a9f5edb0f88b65974bfe505 (no-py38 !)
+  body: size=506, sha1=70926a04cb8887d0bcccf5380488100a10222def (py-38 !)
   % tar.bz2 and zip disallowed should both give 403
   403 Archive type not allowed: bz2
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352
   403 Archive type not allowed: zip
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
   $ test_archtype bz2 tar.bz2 zip tar.gz
   % bz2 allowed should give 200
   200 Script output follows
   content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.bz2
   content-type: application/x-bzip2
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
-  body: size=426, sha1=8d87f5aba6e14f1bfea6c232985982c278b2fb0b
+  body: size=426, sha1=8d87f5aba6e14f1bfea6c232985982c278b2fb0b (no-py38 !)
+  body: size=506, sha1=1bd1f8e8d3701704bd4385038bd9c09b81c77f4e (py38 !)
   % zip and tar.gz disallowed should both give 403
   403 Archive type not allowed: zip
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
   403 Archive type not allowed: gz
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
   $ test_archtype zip zip tar.gz tar.bz2
   % zip allowed should give 200
   200 Script output follows
   content-disposition: attachment; filename=test-archive-1701ef1f1510.zip
   content-type: application/zip
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=(1377|1461|1489), sha1=(677b14d3d048778d5eb5552c14a67e6192068650|be6d3983aa13dfe930361b2569291cdedd02b537|1897e496871aa89ad685a92b936f5fa0d008b9e8) (re)
   % tar.gz and tar.bz2 disallowed should both give 403
   403 Archive type not allowed: gz
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
   403 Archive type not allowed: bz2
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352
 
 check http return codes (with deprecated option)
 
   $ test_archtype_deprecated gz tar.gz tar.bz2 zip
   % gz allowed should give 200
   200 Script output follows
   content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.gz
   content-type: application/x-gzip
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
-  body: size=408, sha1=8fa06531bddecc365a9f5edb0f88b65974bfe505
+  body: size=408, sha1=8fa06531bddecc365a9f5edb0f88b65974bfe505 (no-py38 !)
+  body: size=506, sha1=70926a04cb8887d0bcccf5380488100a10222def (py38 !)
   % tar.bz2 and zip disallowed should both give 403
   403 Archive type not allowed: bz2
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352
   403 Archive type not allowed: zip
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
   $ test_archtype_deprecated bz2 tar.bz2 zip tar.gz
   % bz2 allowed should give 200
   200 Script output follows
   content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.bz2
   content-type: application/x-bzip2
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
-  body: size=426, sha1=8d87f5aba6e14f1bfea6c232985982c278b2fb0b
+  body: size=426, sha1=8d87f5aba6e14f1bfea6c232985982c278b2fb0b (no-py38 !)
+  body: size=506, sha1=1bd1f8e8d3701704bd4385038bd9c09b81c77f4e (py38 !)
   % zip and tar.gz disallowed should both give 403
   403 Archive type not allowed: zip
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
   403 Archive type not allowed: gz
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
   $ test_archtype_deprecated zip zip tar.gz tar.bz2
   % zip allowed should give 200
   200 Script output follows
   content-disposition: attachment; filename=test-archive-1701ef1f1510.zip
   content-type: application/zip
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=(1377|1461|1489), sha1=(677b14d3d048778d5eb5552c14a67e6192068650|be6d3983aa13dfe930361b2569291cdedd02b537|1897e496871aa89ad685a92b936f5fa0d008b9e8) (re)
   % tar.gz and tar.bz2 disallowed should both give 403
   403 Archive type not allowed: gz
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
   403 Archive type not allowed: bz2
   content-type: text/html; charset=ascii
   date: $HTTP_DATE$
   etag: W/"*" (glob)
   server: testing stub value
   transfer-encoding: chunked
   
   body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352
 
   $ echo "allow-archive = gz bz2 zip" >> .hg/hgrc
   $ hg serve -p $HGPORT -d --pid-file=hg.pid -E errors.log
   $ cat hg.pid >> $DAEMON_PIDS
 
 check archive links' order
 
   $ get-with-headers.py localhost:$HGPORT "?revcount=1" | grep '/archive/tip.'
   <a href="/archive/tip.zip">zip</a>
   <a href="/archive/tip.tar.gz">gz</a>
   <a href="/archive/tip.tar.bz2">bz2</a>
 
 invalid arch type should give 404
 
   $ get-with-headers.py localhost:$HGPORT "archive/tip.invalid" | head -n 1
   404 Unsupported archive type: None
 
   $ TIP=`hg id -v | cut -f1 -d' '`
   $ QTIP=`hg id -q`
   $ cat > getarchive.py <<EOF
   > from __future__ import absolute_import
   > import os
   > import sys
   > from mercurial import (
   >     util,
   > )
   > try:
   >     # Set stdout to binary mode for win32 platforms
   >     import msvcrt
   >     msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
   > except ImportError:
   >     pass
   > if len(sys.argv) <= 3:
   >     node, archive = sys.argv[1:]
   >     requeststr = 'cmd=archive;node=%s;type=%s' % (node, archive)
   > else:
   >     node, archive, file = sys.argv[1:]
   >     requeststr = 'cmd=archive;node=%s;type=%s;file=%s' % (node, archive, file)
   > try:
   >     stdout = sys.stdout.buffer
   > except AttributeError:
   >     stdout = sys.stdout
   > try:
   >     f = util.urlreq.urlopen('http://$LOCALIP:%s/?%s'
   >                     % (os.environ['HGPORT'], requeststr))
   >     stdout.write(f.read())
   > except util.urlerr.httperror as e:
   >     sys.stderr.write(str(e) + '\n')
   > EOF
   $ "$PYTHON" getarchive.py "$TIP" gz | gunzip | tar tf - 2>/dev/null
   test-archive-1701ef1f1510/.hg_archival.txt
   test-archive-1701ef1f1510/.hgsub
   test-archive-1701ef1f1510/.hgsubstate
   test-archive-1701ef1f1510/bar
   test-archive-1701ef1f1510/baz/bletch
   test-archive-1701ef1f1510/foo
   test-archive-1701ef1f1510/subrepo/sub
   $ "$PYTHON" getarchive.py "$TIP" bz2 | bunzip2 | tar tf - 2>/dev/null
   test-archive-1701ef1f1510/.hg_archival.txt
   test-archive-1701ef1f1510/.hgsub
   test-archive-1701ef1f1510/.hgsubstate
   test-archive-1701ef1f1510/bar
   test-archive-1701ef1f1510/baz/bletch
   test-archive-1701ef1f1510/foo
   test-archive-1701ef1f1510/subrepo/sub
   $ "$PYTHON" getarchive.py "$TIP" zip > archive.zip
   $ unzip -t archive.zip
   Archive:  archive.zip
       testing: test-archive-1701ef1f1510/.hg_archival.txt*OK (glob)
       testing: test-archive-1701ef1f1510/.hgsub*OK (glob)
       testing: test-archive-1701ef1f1510/.hgsubstate*OK (glob)
       testing: test-archive-1701ef1f1510/bar*OK (glob)
       testing: test-archive-1701ef1f1510/baz/bletch*OK (glob)
       testing: test-archive-1701ef1f1510/foo*OK (glob)
       testing: test-archive-1701ef1f1510/subrepo/sub*OK (glob)
   No errors detected in compressed data of archive.zip.
 
 test that we can download single directories and files
 
   $ "$PYTHON" getarchive.py "$TIP" gz baz | gunzip | tar tf - 2>/dev/null
   test-archive-1701ef1f1510/baz/bletch
   $ "$PYTHON" getarchive.py "$TIP" gz foo | gunzip | tar tf - 2>/dev/null
   test-archive-1701ef1f1510/foo
 
 test that we detect file patterns that match no files
 
   $ "$PYTHON" getarchive.py "$TIP" gz foobar
   HTTP Error 404: file(s) not found: foobar
 
 test that we reject unsafe patterns
 
   $ "$PYTHON" getarchive.py "$TIP" gz relre:baz
   HTTP Error 404: file(s) not found: relre:baz
 
   $ killdaemons.py
 
   $ hg archive -t tar test.tar
   $ tar tf test.tar
   test/.hg_archival.txt
   test/.hgsub
   test/.hgsubstate
   test/bar
   test/baz/bletch
   test/foo
 
   $ hg archive --debug -t tbz2 -X baz test.tar.bz2 --config progress.debug=true
   archiving: 0/4 files (0.00%)
   archiving: .hgsub 1/4 files (25.00%)
   archiving: .hgsubstate 2/4 files (50.00%)
   archiving: bar 3/4 files (75.00%)
   archiving: foo 4/4 files (100.00%)
   $ bunzip2 -dc test.tar.bz2 | tar tf - 2>/dev/null
   test/.hg_archival.txt
   test/.hgsub
   test/.hgsubstate
   test/bar
   test/foo
 
   $ hg archive -t tgz -p %b-%h test-%h.tar.gz
   $ gzip -dc test-$QTIP.tar.gz | tar tf - 2>/dev/null
   test-1701ef1f1510/.hg_archival.txt
   test-1701ef1f1510/.hgsub
   test-1701ef1f1510/.hgsubstate
   test-1701ef1f1510/bar
   test-1701ef1f1510/baz/bletch
   test-1701ef1f1510/foo
 
   $ hg archive autodetected_test.tar
   $ tar tf autodetected_test.tar
   autodetected_test/.hg_archival.txt
   autodetected_test/.hgsub
   autodetected_test/.hgsubstate
   autodetected_test/bar
   autodetected_test/baz/bletch
   autodetected_test/foo
 
 The '-t' should override autodetection
 
   $ hg archive -t tar autodetect_override_test.zip
   $ tar tf autodetect_override_test.zip
   autodetect_override_test.zip/.hg_archival.txt
   autodetect_override_test.zip/.hgsub
   autodetect_override_test.zip/.hgsubstate
   autodetect_override_test.zip/bar
   autodetect_override_test.zip/baz/bletch
   autodetect_override_test.zip/foo
 
   $ for ext in tar tar.gz tgz tar.bz2 tbz2 zip; do
   >     hg archive auto_test.$ext
   >     if [ -d auto_test.$ext ]; then
   >         echo "extension $ext was not autodetected."
   >     fi
   > done
 
   $ cat > md5comp.py <<EOF
   > from __future__ import absolute_import, print_function
   > import hashlib
   > import sys
   > f1, f2 = sys.argv[1:3]
   > h1 = hashlib.md5(open(f1, 'rb').read()).hexdigest()
   > h2 = hashlib.md5(open(f2, 'rb').read()).hexdigest()
   > print(h1 == h2 or "md5 differ: " + repr((h1, h2)))
   > EOF
 
 archive name is stored in the archive, so create similar archives and
 rename them afterwards.
 
   $ hg archive -t tgz tip.tar.gz
   $ mv tip.tar.gz tip1.tar.gz
   $ sleep 1
   $ hg archive -t tgz tip.tar.gz
   $ mv tip.tar.gz tip2.tar.gz
   $ "$PYTHON" md5comp.py tip1.tar.gz tip2.tar.gz
   True
 
   $ hg archive -t zip -p /illegal test.zip
   abort: archive prefix contains illegal components
   [255]
   $ hg archive -t zip -p very/../bad test.zip
 
   $ hg archive --config ui.archivemeta=false -t zip -r 2 test.zip
   $ unzip -t test.zip
   Archive:  test.zip
       testing: test/bar*OK (glob)
       testing: test/baz/bletch*OK (glob)
       testing: test/foo*OK (glob)
   No errors detected in compressed data of test.zip.
 
   $ hg archive -t tar - | tar tf - 2>/dev/null
   test-1701ef1f1510/.hg_archival.txt
   test-1701ef1f1510/.hgsub
   test-1701ef1f1510/.hgsubstate
   test-1701ef1f1510/bar
   test-1701ef1f1510/baz/bletch
   test-1701ef1f1510/foo
 
   $ hg archive -r 0 -t tar rev-%r.tar
   $ [ -f rev-0.tar ]
 
 test .hg_archival.txt
 
   $ hg archive ../test-tags
   $ cat ../test-tags/.hg_archival.txt
   repo: daa7f7c60e0a224faa4ff77ca41b2760562af264
   node: 1701ef1f151069b8747038e93b5186bb43a47504
   branch: default
   latesttag: null
   latesttagdistance: 4
   changessincelatesttag: 4
   $ hg tag -r 2 mytag
   $ hg tag -r 2 anothertag
   $ hg archive -r 2 ../test-lasttag
   $ cat ../test-lasttag/.hg_archival.txt
   repo: daa7f7c60e0a224faa4ff77ca41b2760562af264
   node: 2c0277f05ed49d1c8328fb9ba92fba7a5ebcb33e
   branch: default
   tag: anothertag
   tag: mytag
 
   $ hg archive -t bogus test.bogus
   abort: unknown archive type 'bogus'
   [255]
 
 enable progress extension:
 
   $ cp $HGRCPATH $HGRCPATH.no-progress
   $ cat >> $HGRCPATH <<EOF
   > [progress]
   > assume-tty = 1
   > format = topic bar number
   > delay = 0
   > refresh = 0
   > width = 60
   > EOF
 
   $ hg archive ../with-progress
   \r (no-eol) (esc)
   archiving [                                           ] 0/6\r (no-eol) (esc)
   archiving [======>                                    ] 1/6\r (no-eol) (esc)
   archiving [=============>                             ] 2/6\r (no-eol) (esc)
   archiving [====================>                      ] 3/6\r (no-eol) (esc)
   archiving [===========================>               ] 4/6\r (no-eol) (esc)
   archiving [==================================>        ] 5/6\r (no-eol) (esc)
   archiving [==========================================>] 6/6\r (no-eol) (esc)
                                                               \r (no-eol) (esc)
 
 cleanup after progress extension test:
 
   $ cp $HGRCPATH.no-progress $HGRCPATH
 
 server errors
 
   $ cat errors.log
 
 empty repo
 
   $ hg init ../empty
   $ cd ../empty
   $ hg archive ../test-empty
   abort: no working directory: please specify a revision
   [255]
 
 old file -- date clamped to 1980
 
   $ touch -t 197501010000 old
   $ hg add old
   $ hg commit -m old
   $ hg archive ../old.zip
   $ unzip -l ../old.zip | grep -v -- ----- | egrep -v files$
   Archive:  ../old.zip
   \s*Length.* (re)
   *172*80*00:00*old/.hg_archival.txt (glob)
   *0*80*00:00*old/old (glob)
 
 test xz support only available in Python 3.4
 
 #if py3
   $ hg archive ../archive.txz
   $ xz -l ../archive.txz | head -n1
   Strms  Blocks   Compressed Uncompressed  Ratio  Check   Filename
   $ rm -f ../archive.txz
 #else
   $ hg archive ../archive.txz
   abort: xz compression is only available in Python 3
   [255]
 #endif
 
 show an error when a provided pattern matches no files
 
   $ hg archive -I file_that_does_not_exist.foo ../empty.zip
   abort: no files match the archive pattern
   [255]
 
   $ hg archive -X * ../empty.zip
   abort: no files match the archive pattern
   [255]
 
   $ cd ..
 
 issue3600: check whether "hg archive" can create archive files which
 are extracted with expected timestamp, even though TZ is not
 configured as GMT.
 
   $ mkdir issue3600
   $ cd issue3600
 
   $ hg init repo
   $ echo a > repo/a
   $ hg -R repo add repo/a
   $ hg -R repo commit -m '#0' -d '456789012 21600'
   $ cat > show_mtime.py <<EOF
   > from __future__ import absolute_import, print_function
   > import os
   > import sys
   > print(int(os.stat(sys.argv[1]).st_mtime))
   > EOF
 
   $ hg -R repo archive --prefix tar-extracted archive.tar
   $ (TZ=UTC-3; export TZ; tar xf archive.tar)
   $ "$PYTHON" show_mtime.py tar-extracted/a
   456789012
 
   $ hg -R repo archive --prefix zip-extracted archive.zip
   $ (TZ=UTC-3; export TZ; unzip -q archive.zip)
   $ "$PYTHON" show_mtime.py zip-extracted/a
   456789012
 
   $ cd ..