view tests/test-bundle-type.t @ 26454:62c5e937f477

pager: recreate stdout to make it line-buffered

We want to see partial command results as soon as possible. But the buffering
mode of stdout (= pager's stdin) was set to fully-buffered because it isn't
associated with a tty. So, this patch recreates new stdout object to force its
buffering mode.

Because two file objects are associated with the same stdout fd and their
destructors will call close(), one of them must be closed carefully. Python
expects that the stdout fd never be closed even after sys.stdout.close() [1],
but newstdout has no such hack. So this patch calls newstdout.close()
immediately before duplicating the original stdout fd to sys.stdout.

  operation              sys.stdout  newstdout  fd
  ---------------------  ----------  ---------  --------
  newstdout.close()      open        closed     closed
  os.dup2(stdoutfd, ..)  open        closed     open
  del sys.stdout         closed      closed     open [1]

 [1]: https://hg.python.org/cpython/file/v2.7.10/Python/sysmodule.c#l1391

bundle w/o type option

  $ hg init t1
  $ hg init t2
  $ cd t1
  $ echo blablablablabla > file.txt
  $ hg ci -Ama
  adding file.txt
  $ hg log | grep summary
  summary:     a
  $ hg bundle ../b1 ../t2
  searching for changes
  1 changesets found

  $ cd ../t2
  $ hg pull ../b1
  pulling from ../b1
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)
  $ hg up
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log | grep summary
  summary:     a
  $ cd ..

test bundle types

  $ for t in "None" "bzip2" "gzip"; do
  >   echo % test bundle type $t
  >   hg init t$t
  >   cd t1
  >   hg bundle -t $t ../b$t ../t$t
  >   cut -b 1-6 ../b$t | head -n 1
  >   cd ../t$t
  >   hg pull ../b$t
  >   hg up
  >   hg log | grep summary
  >   cd ..
  > done
  % test bundle type None
  searching for changes
  1 changesets found
  HG10UN
  pulling from ../bNone
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  summary:     a
  % test bundle type bzip2
  searching for changes
  1 changesets found
  HG10BZ
  pulling from ../bbzip2
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  summary:     a
  % test bundle type gzip
  searching for changes
  1 changesets found
  HG10GZ
  pulling from ../bgzip
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  summary:     a

test garbage file

  $ echo garbage > bgarbage
  $ hg init tgarbage
  $ cd tgarbage
  $ hg pull ../bgarbage
  pulling from ../bgarbage
  abort: ../bgarbage: not a Mercurial bundle
  [255]
  $ cd ..

test invalid bundle type

  $ cd t1
  $ hg bundle -a -t garbage ../bgarbage
  abort: unknown bundle type specified with --type
  [255]
  $ cd ..