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tests/test-hooklib-changeset_obsoleted.t
author Manuel Jacob <me@manueljacob.de>
Mon, 11 Jul 2022 01:51:20 +0200
branchstable
changeset 49378 094a5fa3cf52
parent 45075 04ef381000a8
permissions -rw-r--r--
procutil: make stream detection in make_line_buffered more correct and strict In make_line_buffered(), we don’t want to wrap the stream if we know that lines get flushed to the underlying raw stream already. Previously, the heuristic was too optimistic. It assumed that any stream which is not an instance of io.BufferedIOBase doesn’t need wrapping. However, there are buffered streams that aren’t instances of io.BufferedIOBase, like Mercurial’s own winstdout. The new logic is different in two ways: First, only for the check, if unwraps any combination of WriteAllWrapper and winstdout. Second, it skips wrapping the stream only if it is an instance of io.RawIOBase (or already wrapped). If it is an instance of io.BufferedIOBase, it gets wrapped. In any other case, the function raises an exception. This ensures that, if an unknown stream is passed or we add another wrapper in the future, we don’t wrap the stream if it’s already line buffered or not wrap the stream if it’s not line buffered. In fact, this was already helpful during development of this change. Without it, I possibly would have forgot that WriteAllWrapper needs to be ignored for the check, leading to unnecessary wrapping if stdout is unbuffered. The alternative would have been to always wrap unknown streams. However, I don’t think that anyone would benefit from being less strict. We can expect streams from the standard library to be subclassing either io.RawIOBase or io.BufferedIOBase, so running Mercurial in the standard way should not regress by this change. Py2exe might replace sys.stdout and sys.stderr, but that currently breaks Mercurial anyway and also these streams don’t claim to be interactive, so this function is not called for them.
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  $ cat <<EOF >> $HGRCPATH
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  > [experimental]
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  > evolution = true
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  >
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  > [extensions]
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  > notify =
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  > hooklib =
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  >
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  > [phases]
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  > publish = False
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  >
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  > [notify]
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  > sources = pull
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  > diffstat = False
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  > messageidseed = example
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  > domain = example.com
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  >
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  > [reposubs]
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  > * = baz
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  > EOF
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  $ hg init a
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  $ hg --cwd a debugbuilddag +2
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  $ hg init b
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  $ cat <<EOF >> b/.hg/hgrc
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  > [hooks]
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  > incoming.notify = python:hgext.notify.hook
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  > txnclose.changeset_obsoleted = python:hgext.hooklib.changeset_obsoleted.hook
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  > EOF
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  $ hg --cwd b pull ../a | "$PYTHON" $TESTDIR/unwrap-message-id.py
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  pulling from ../a
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  requesting all changes
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  adding changesets
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  adding manifests
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  adding file changes
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  new changesets 1ea73414a91b:66f7d451a68b (2 drafts)
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  MIME-Version: 1.0
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  Content-Type: text/plain; charset="us-ascii"
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  Content-Transfer-Encoding: 7bit
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  Date: * (glob)
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  Subject: changeset in * (glob)
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  From: debugbuilddag@example.com
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  X-Hg-Notification: changeset 1ea73414a91b
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  Message-Id: <hg.81c297828fd2d5afaadf2775a6a71b74143b6451dfaac09fac939e9107a50d01@example.com>
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  To: baz@example.com
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  changeset 1ea73414a91b in $TESTTMP/b
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  details: $TESTTMP/b?cmd=changeset;node=1ea73414a91b
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  description:
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  	r0
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  Subject: changeset in * (glob)
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  From: debugbuilddag@example.com
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  X-Hg-Notification: changeset 66f7d451a68b
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  Message-Id: <hg.364d03da7dc13829eb779a805be7e37f54f572e9afcea7d2626856a794d3e8f3@example.com>
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  To: baz@example.com
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  changeset 66f7d451a68b in $TESTTMP/b
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  details: $TESTTMP/b?cmd=changeset;node=66f7d451a68b
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  	r1
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  (run 'hg update' to get a working copy)
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  $ hg --cwd a debugobsolete 1ea73414a91b0920940797d8fc6a11e447f8ea1e
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  $ hg --cwd a push ../b --hidden | "$PYTHON" $TESTDIR/unwrap-message-id.py
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  pushing to ../b
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  searching for changes
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  no changes found
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  Subject: changeset abandoned
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  In-reply-to: <hg.81c297828fd2d5afaadf2775a6a71b74143b6451dfaac09fac939e9107a50d01@example.com>
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  Message-Id: <hg.d6329e9481594f0f3c8a84362b3511318bfbce50748ab1123f909eb6fbcab018@example.com>
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  Date: * (glob)
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  From: test@example.com
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  To: baz@example.com
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  This changeset has been abandoned.
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Check that known changesets with known successors do not result in a mail.












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  $ hg init c












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  $ hg init d












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  > [hooks]












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  > incoming.notify = python:hgext.notify.hook












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  > txnclose.changeset_obsoleted = python:hgext.hooklib.changeset_obsoleted.hook












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  $ hg --cwd c debugobsolete $(hg --cwd c log -T '{node}' -r 1) $(hg --cwd c log -T '{node}' -r 2)







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  $ hg --cwd c push ../d | "$PYTHON" $TESTDIR/unwrap-message-id.py












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  pushing to ../d












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  searching for changes












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