view tests/test-remotefilelog-cacheprocess.t @ 41784:251332dbf33d

diff: make sure we output stat even when --git is not passed (issue4037) (BC)

Before this patch, `hg diff --stat` will give an empty output. It will not show
the stat information. I debugged and found that the underlying code does not
return the diff header and due to that, other code paths fails to parse that as
a diff.

I looked into why we don't return diff headers in quiet mode and found the
behavior is from 8f8bb77d560e70bcc95577e4dfa877df18d876ab which does not have
any mention about why it is done. We also show the diff headers in git, so I
think it's fine showing diff header in normal diff in quiet mode.

Differential Revision: https://phab.mercurial-scm.org/D6007

#require no-windows

  $ . "$TESTDIR/remotefilelog-library.sh"

  $ hg init repo
  $ cd repo
  $ cat >> .hg/hgrc <<EOF
  > [remotefilelog]
  > server=True
  > EOF
  $ echo x > x
  $ echo y > y
  $ echo z > z
  $ hg commit -qAm xy
  $ cd ..

  $ cat > cacheprocess-logger.py <<EOF
  > import os
  > import shutil
  > import sys
  > if sys.version_info[0] > 2:
  >     xrange = range
  > f = open('$TESTTMP/cachelog.log', 'w')
  > srccache = os.path.join('$TESTTMP', 'oldhgcache')
  > def log(message):
  >     f.write(message)
  >     f.flush()
  > destcache = sys.argv[-1]
  > try:
  >     while True:
  >         cmd = sys.stdin.readline().strip()
  >         log('got command %r\n' % cmd)
  >         if cmd == 'exit':
  >             sys.exit(0)
  >         elif cmd == 'get':
  >             count = int(sys.stdin.readline())
  >             log('client wants %r blobs\n' % count)
  >             wants = []
  >             for _ in xrange(count):
  >                 key = sys.stdin.readline()[:-1]
  >                 wants.append(key)
  >                 if '\0' in key:
  >                     _, key = key.split('\0')
  >                 srcpath = os.path.join(srccache, key)
  >                 if os.path.exists(srcpath):
  >                     dest = os.path.join(destcache, key)
  >                     destdir = os.path.dirname(dest)
  >                     if not os.path.exists(destdir):
  >                         os.makedirs(destdir)
  >                     shutil.copyfile(srcpath, dest)
  >                 else:
  >                     # report a cache miss
  >                     sys.stdout.write(key + '\n')
  >             sys.stdout.write('0\n')
  >             for key in sorted(wants):
  >                 log('requested %r\n' % key)
  >             sys.stdout.flush()
  >         elif cmd == 'set':
  >             raise Exception('todo writing')
  >         else:
  >             raise Exception('unknown command! %r' % cmd)
  > except Exception as e:
  >     log('Exception! %s\n' % e)
  >     raise
  > EOF

  $ cat >> $HGRCPATH <<EOF
  > [remotefilelog]
  > cacheprocess = python $TESTTMP/cacheprocess-logger.py
  > EOF

Test cache keys and cache misses.
  $ hgcloneshallow ssh://user@dummy/repo clone -q
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)
  $ cat cachelog.log
  got command 'get'
  client wants 3 blobs
  requested 'master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
  requested 'master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'
  requested 'master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
  got command 'set'
  Exception! todo writing

Test cache hits.
  $ mv hgcache oldhgcache
  $ rm cachelog.log
  $ hgcloneshallow ssh://user@dummy/repo clone-cachehit -q
  3 files fetched over 1 fetches - (0 misses, 100.00% hit ratio) over *s (glob)
  $ cat cachelog.log | grep -v exit
  got command 'get'
  client wants 3 blobs
  requested 'master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
  requested 'master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'
  requested 'master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'

  $ cat >> $HGRCPATH <<EOF
  > [remotefilelog]
  > cacheprocess.includepath = yes
  > EOF

Test cache keys and cache misses with includepath.
  $ rm -r hgcache oldhgcache
  $ rm cachelog.log
  $ hgcloneshallow ssh://user@dummy/repo clone-withpath -q
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)
  $ cat cachelog.log
  got command 'get'
  client wants 3 blobs
  requested 'x\x00master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
  requested 'y\x00master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
  requested 'z\x00master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'
  got command 'set'
  Exception! todo writing

Test cache hits with includepath.
  $ mv hgcache oldhgcache
  $ rm cachelog.log
  $ hgcloneshallow ssh://user@dummy/repo clone-withpath-cachehit -q
  3 files fetched over 1 fetches - (0 misses, 100.00% hit ratio) over *s (glob)
  $ cat cachelog.log | grep -v exit
  got command 'get'
  client wants 3 blobs
  requested 'x\x00master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0'
  requested 'y\x00master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca'
  requested 'z\x00master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a'