tests/test-http-clone-r.t

streamclone: disable the volatile file open handle optimization on Windows

Leaving files open caused new failures like this, since a47f09da8bd1:

    diff --git a/tests/test-persistent-nodemap-stream-clone.t b/tests/test-persistent-nodemap-stream-clone.t
    --- a/tests/test-persistent-nodemap-stream-clone.t
    +++ b/tests/test-persistent-nodemap-stream-clone.t
    @@ -115,7 +115,12 @@ Do a mix of clone and commit at the same
       $ (hg clone -U --stream ssh://user@dummy/test-repo stream-clone-race-1 --debug 2>> clone-output | grep -E '00(changelog|manifest)' >> clone-output; touch $HG_TEST_STREAM_WALKED_FILE_3) &
       $ $RUNTESTDIR/testlib/wait-on-file 10 $HG_TEST_STREAM_WALKED_FILE_1
       $ hg -R test-repo/ commit -m foo
    -  created new head
    +  transaction abort!
    +  failed to recover 00changelog.n ([WinError 32] The process cannot access the file because it is being used by another process: b'$STR_REPR_TESTTMP\\test-repo/.hg/store/00changelog.n' -> b'$STR_REPR_TESTTMP\\test-repo/.hg/store/00changelog.n-f418dcd6')
    +  rollback failed - please run hg recover
    +  (failure reason: [WinError 32] The process cannot access the file because it is being used by another process: b'$STR_REPR_TESTTMP\\test-repo/.hg/store/00changelog.n' -> b'$STR_REPR_TESTTMP\\test-repo/.hg/store/00changelog.n-f418dcd6')
    +  abort: The process cannot access the file because it is being used by another process: '$TESTTMP\test-repo\.hg\store\00changelog.n'
    +  [255]
       $ touch $HG_TEST_STREAM_WALKED_FILE_2
       $ $RUNTESTDIR/testlib/wait-on-file 10 $HG_TEST_STREAM_WALKED_FILE_3
       $ cat clone-output

Since the `VolatileManager` falls back to the old copy method when the open file
threshold is exceeded, this just drops the threshold so that only 1 file is
open.  The actual value used (2) is unexpected, and explained inline.  I'd like
to have a config option for this so that we can test both ways (in theory, it
could resort to copies on non-Windows systems too), but I don't see a `uimod.ui`
handy.

Alternately, I tried replacing the 3 `open()` calls in the `VolatileManager`
with `util.posixfile()`, but that simply hung the test on Windows for some
reason, I think on the same line that's indicated as failing above.  (There was
a `grep` command hanging around, as well as `hg  -R test-repo serve --stdio`.)

#require serve

creating 'remote

  $ hg init remote
  $ cd remote
  $ hg unbundle "$TESTDIR/bundles/remote.hg"
  adding changesets
  adding manifests
  adding file changes
  added 9 changesets with 7 changes to 4 files (+1 heads)
  new changesets bfaf4b5cbf01:916f1afdef90 (9 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg up tip
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

Starting server

  $ hg serve -p $HGPORT -E ../error.log -d --pid-file=../hg1.pid
  $ cd ..
  $ cat hg1.pid >> $DAEMON_PIDS

clone remote via stream

  $ for i in 0 1 2 3 4 5 6 7 8; do
  >    hg clone -r "$i" http://localhost:$HGPORT/ test-"$i"
  >    if cd test-"$i"; then
  >       hg verify -q
  >       cd ..
  >    fi
  > done
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  new changesets bfaf4b5cbf01
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 1 files
  new changesets bfaf4b5cbf01:21f32785131f
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 1 files
  new changesets bfaf4b5cbf01:4ce51a113780
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 4 changes to 1 files
  new changesets bfaf4b5cbf01:93ee6ab32777
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 1 files
  new changesets bfaf4b5cbf01:c70afb1ee985
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 1 files
  new changesets bfaf4b5cbf01:f03ae5a9b979
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 5 changes to 2 files
  new changesets bfaf4b5cbf01:095cb14b1b4d
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 6 changes to 3 files
  new changesets bfaf4b5cbf01:faa2e4234c7a
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 2 files
  new changesets bfaf4b5cbf01:916f1afdef90
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd test-8
  $ hg pull ../test-7
  pulling from ../test-7
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 2 changes to 3 files (+1 heads)
  new changesets c70afb1ee985:faa2e4234c7a
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg verify -q
  $ cd ..
  $ cd test-1
  $ hg pull -r 4 http://localhost:$HGPORT/
  pulling from http://localhost:$HGPORT/
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files (+1 heads)
  new changesets c70afb1ee985
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg verify -q
  $ hg pull http://localhost:$HGPORT/
  pulling from http://localhost:$HGPORT/
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 6 changesets with 5 changes to 4 files
  new changesets 4ce51a113780:916f1afdef90
  (run 'hg update' to get a working copy)
  $ cd ..
  $ cd test-2
  $ hg pull -r 5 http://localhost:$HGPORT/
  pulling from http://localhost:$HGPORT/
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 0 changes to 0 files (+1 heads)
  new changesets c70afb1ee985:f03ae5a9b979
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg verify -q
  $ hg pull http://localhost:$HGPORT/
  pulling from http://localhost:$HGPORT/
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 4 changes to 4 files
  new changesets 93ee6ab32777:916f1afdef90
  (run 'hg update' to get a working copy)
  $ hg verify -q
  $ cd ..

no default destination if url has no path:

  $ hg clone http://localhost:$HGPORT/
  abort: empty destination path is not valid
  [10]

  $ cat error.log