upstream/mercurial-mirror Files · tests/test-exchange-obsmarkers-case-D2.t

posix: always seek to EOF when opening a file in append mode...

posix: always seek to EOF when opening a file in append mode Python 3 already does this, so skip it there. Consider the program: #include <stdio.h> int main() { FILE *f = fopen("narf", "w"); fprintf(f, "narf\n"); fclose(f); f = fopen("narf", "a"); printf("%ld\n", ftell(f)); fprintf(f, "troz\n"); printf("%ld\n", ftell(f)); return 0; } on macOS, FreeBSD, and Linux with glibc, this program prints 5 10 but on musl libc (Alpine Linux and probably others) this prints 0 10 By my reading of https://pubs.opengroup.org/onlinepubs/009695399/functions/fopen.html this is technically correct, specifically: > Opening a file with append mode (a as the first character in the > mode argument) shall cause all subsequent writes to the file to be > forced to the then current end-of-file, regardless of intervening > calls to fseek(). in other words, the file position doesn't really matter in append-mode files, and we can't depend on it being at all meaningful unless we perform a seek() before tell() after open(..., 'a'). Experimentally after a .write() we can do a .tell() and it'll always be reasonable, but I'm unclear from reading the specification if that's a smart thing to rely on. This matches what we do on Windows and what Python 3 does for free, so let's just be consistent. Thanks to Yuya for the idea.

Boris Feld - - Load All Authors

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      ============================================

      Testing obsolescence markers push: Cases D.2

      ============================================

      Mercurial pushes obsolescences markers relevant to the "pushed-set", the set of

      all changesets that requested to be "in sync" after the push (even if they are

      already on both side).

      This test belongs to a series of tests checking such set is properly computed

      and applied. This does not tests "obsmarkers" discovery capabilities.

      Category D: Partial Information Case

      TestCase 2: missing prune target (prune in "pushed set")

      D.2 missing prune target (prune in "pushed set")

      ================================================

      .. {{{

      ..   A ø⇠✕ A'

      ..     |/

      ..     ● O

      .. }}}

      ..

      .. Marker exist from:

      ..

      ..  * A' succeed to A

      ..  * A' (prune)

      ..

      .. Command runs:

      ..

      ..  * hg push

      ..

      .. Expected exchange:

      ..

      ..  * `A ø⇠o A'`

      ..  * A' (prune)

      Setup

      -----

        $ . $TESTDIR/testlib/exchange-obsmarker-util.sh

      Initial

        $ setuprepos D.2

        creating test repo for test case D.2

        - pulldest

        - main

        - pushdest

        cd into `main` and proceed with env setup

        $ cd main

        $ mkcommit A0

        $ hg up -q 0

        $ mkcommit A1

        created new head

        $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`

        obsoleted 1 changesets

        $ hg prune --date '0 0' .

        obsoleted 1 changesets

        $ hg strip --hidden -q 'desc(A1)'

        $ hg log -G --hidden

        x  28b51eb45704 (draft): A0

        |

        @  a9bdc8b26820 (public): O

        $ inspect_obsmarkers

        obsstore content

        ================

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        $ cd ..

        $ cd ..

      Actual Test

      -----------

        $ dotest D.2

        ## Running testcase D.2

        ## initial state

        # obstore: main

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        # obstore: pushdest

        # obstore: pulldest

        ## pushing from main to pushdest

        pushing to pushdest

        searching for changes

        no changes found

        remote: 2 new obsolescence markers

        ## post push state

        # obstore: main

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        # obstore: pushdest

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        # obstore: pulldest

        ## pulling from main into pulldest

        pulling from main

        searching for changes

        no changes found

        2 new obsolescence markers

        ## post pull state

        # obstore: main

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        # obstore: pushdest

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        # obstore: pulldest

        28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

        e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

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				============================================
				Testing obsolescence markers push: Cases D.2
				============================================

				Mercurial pushes obsolescences markers relevant to the "pushed-set", the set of
				all changesets that requested to be "in sync" after the push (even if they are
				already on both side).

				This test belongs to a series of tests checking such set is properly computed
				and applied. This does not tests "obsmarkers" discovery capabilities.

				Category D: Partial Information Case
				TestCase 2: missing prune target (prune in "pushed set")

				D.2 missing prune target (prune in "pushed set")
				================================================

				.. {{{
				.. A ø⇠✕ A'
				.. \|/
				.. ● O
				.. }}}
				..
				.. Marker exist from:
				..
				.. * A' succeed to A
				.. * A' (prune)
				..
				.. Command runs:
				..
				.. * hg push
				..
				.. Expected exchange:
				..
				.. * `A ø⇠o A'`
				.. * A' (prune)

				Setup
				-----

				$ . $TESTDIR/testlib/exchange-obsmarker-util.sh

				Initial

				$ setuprepos D.2
				creating test repo for test case D.2
				- pulldest
				- main
				- pushdest
				cd into `main` and proceed with env setup
				$ cd main
				$ mkcommit A0
				$ hg up -q 0
				$ mkcommit A1
				created new head
				$ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
				obsoleted 1 changesets
				$ hg prune --date '0 0' .
				obsoleted 1 changesets
				$ hg strip --hidden -q 'desc(A1)'
				$ hg log -G --hidden
				x 28b51eb45704 (draft): A0
				\|
				@ a9bdc8b26820 (public): O

				$ inspect_obsmarkers
				obsstore content
				================
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				$ cd ..
				$ cd ..

				Actual Test
				-----------

				$ dotest D.2
				## Running testcase D.2
				## initial state
				# obstore: main
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				# obstore: pushdest
				# obstore: pulldest
				## pushing from main to pushdest
				pushing to pushdest
				searching for changes
				no changes found
				remote: 2 new obsolescence markers
				## post push state
				# obstore: main
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				# obstore: pushdest
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				# obstore: pulldest
				## pulling from main into pulldest
				pulling from main
				searching for changes
				no changes found
				2 new obsolescence markers
				## post pull state
				# obstore: main
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				# obstore: pushdest
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				# obstore: pulldest
				28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
				e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}