view tests/test-push-checkheads-pruned-B6.t @ 46083:81c1f5d1801f

procutils: don't try to get `.buffer` if sys.stdin is None

While hunting down following test failure of test-chg.t on Python 3, I stumbled
the case when `.buffer` is not available as sys.stdin is None.

	--- /home/pulkit/repo/hg-committed/tests/test-chg.t
	+++ /home/pulkit/repo/hg-committed/tests/test-chg.t.err
	@@ -203,7 +203,31 @@
	   $ CHGDEBUG=1 chg version -q 0<&-
		 chg: debug: * stdio fds are missing (glob)
	     chg: debug: * execute original hg (glob)
		 -  Mercurial Distributed SCM * (glob)
		 +  Traceback (most recent call last):
		 +    File "/tmp/hgtests.avspvsq4/install/bin/hg", line 43, in <module>
		 +      dispatch.run()
		 +    File "/usr/lib/python3.6/importlib/util.py", line 233, in
		 __getattribute__
		 +      self.__spec__.loader.exec_module(self)
		 +    File "<frozen importlib._bootstrap_external>", line 678, in
		 exec_module
		 +    File "<frozen importlib._bootstrap>", line 219, in
		 _call_with_frames_removed
		 +    File
		 "/tmp/hgtests.avspvsq4/install/lib/python/mercurial/dispatch.py", line
		 726, in <module>
		 +      class lazyaliasentry(object):
		 +    File
		 "/tmp/hgtests.avspvsq4/install/lib/python/mercurial/dispatch.py", line
		 737, in lazyaliasentry
		 +      @util.propertycache
		 +    File "/usr/lib/python3.6/importlib/util.py", line 233, in
		 __getattribute__
		 +      self.__spec__.loader.exec_module(self)
		 +    File "<frozen importlib._bootstrap_external>", line 678, in
		 exec_module
		 +    File "<frozen importlib._bootstrap>", line 219, in
		 _call_with_frames_removed
		 +    File "/tmp/hgtests.avspvsq4/install/lib/python/mercurial/util.py",
		 line 3473, in <module>
		 +      f=procutil.stderr,
		 +    File "/usr/lib/python3.6/importlib/util.py", line 233, in
		 __getattribute__
		 +      self.__spec__.loader.exec_module(self)
		 +    File "<frozen importlib._bootstrap_external>", line 678, in
		 exec_module
		 +    File "<frozen importlib._bootstrap>", line 219, in
		 _call_with_frames_removed
		 +    File
		 "/tmp/hgtests.avspvsq4/install/lib/python/mercurial/utils/procutil.py",
		 line 127, in <module>
		 +      stdin = sys.stdin.buffer
		 +  AttributeError: 'NoneType' object has no attribute 'buffer'
		 +  [1]

		  server lifecycle
		   ----------------

Differential Revision: https://phab.mercurial-scm.org/D9500

====================================
Testing head checking code: Case B-6
====================================

Mercurial checks for the introduction of new heads on push. Evolution comes
into play to detect if existing branches on the server are being replaced by
some of the new one we push.

This case is part of a series of tests checking this behavior.

Category B: simple case involving pruned changesets
TestCase 6: single changesets, pruned then superseeded (on a new changeset)

.. old-state:
..
.. * 1 changeset branch
..
.. new-state:
..
.. * old branch is rewritten onto another one,
.. * the new version is then pruned.
..
.. expected-result:
..
.. * push allowed
..
.. graph-summary:
..
..   A ø⇠⊗ A'
..     | |
..     | ◔ B
..     |/
..     ●

  $ . $TESTDIR/testlib/push-checkheads-util.sh

Test setup
----------

  $ mkdir B6
  $ cd B6
  $ setuprepos
  creating basic server and client repo
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd client
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit B0
  created new head
  $ mkcommit A1
  $ hg up 'desc(B0)'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg debugobsolete `getid "desc(A0)"` `getid "desc(A1)"`
  1 new obsolescence markers
  obsoleted 1 changesets
  $ hg debugobsolete --record-parents `getid "desc(A1)"`
  1 new obsolescence markers
  obsoleted 1 changesets
  $ hg log -G --hidden
  x  ba93660aff8d (draft): A1
  |
  @  74ff5441d343 (draft): B0
  |
  | x  8aaa48160adc (draft): A0
  |/
  o  1e4be0697311 (public): root
  

Actual testing
--------------

  $ hg push
  pushing to $TESTTMP/B6/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  2 new obsolescence markers
  obsoleted 1 changesets

  $ cd ../..