upstream/mercurial-mirror Files · tests/test-push-checkheads-superceed-A7.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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        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
      ====================================

      Testing head checking code: Case A-7

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

      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 A: simple case involving a branch being superceeded by another.

      TestCase 7: multi-changeset branch, split on multiple other, (head on its own branch), same number of head

      .. old-state:

      ..

      .. * 2 branch (1-changeset, and 2-changesets)

      ..

      .. new-state:

      ..

      .. * 1 new branch superceeding the head of the old-2-changesets-branch,

      .. * 1 new changesets on the old-1-changeset-branch superceeding the base of the other

      ..

      .. expected-result:

      ..

      .. * push allowed

      ..

      .. graph-summary:

      ..

      ..   B ø⇠◔ B'

      ..     | |

      .. A'◔⇢ø |

      ..   | |/

      .. C ● |

      ..    \|

      ..     ●

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

      Test setup

      ----------

        $ mkdir A7

        $ cd A7

        $ setuprepos

        creating basic server and client repo

        updating to branch default

        2 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cd server

        $ mkcommit B0

        $ hg up 0

        0 files updated, 0 files merged, 2 files removed, 0 files unresolved

        $ mkcommit C0

        created new head

        $ cd ../client

        $ hg pull

        Matt Harbison
    
tests: remove (glob) annotations that were only for '\' matches...

              r35394
            
        pulling from $TESTTMP/A7/server

        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 2 changesets with 2 changes to 2 files (+1 heads)

        Boris Feld
    
phase: report number of non-public changeset alongside the new range...

              r39516
            
        new changesets d73caddc5533:0f88766e02d6 (2 drafts)

        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
        (run 'hg heads' to see heads, 'hg merge' to merge)

        $ hg up 'desc(C0)'

        1 files updated, 0 files merged, 1 files removed, 0 files unresolved

        $ mkcommit A1

        $ hg up 0

        0 files updated, 0 files merged, 2 files removed, 0 files unresolved

        $ mkcommit B1

        created new head

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

        Boris Feld
    
debugobsolete: also report the number of obsoleted changesets...

              r33542
            
        obsoleted 1 changesets

        Martin von Zweigbergk
    
evolution: report new unstable changesets...

              r35727
            
        1 new orphan changesets

        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
        $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`

        Boris Feld
    
debugobsolete: also report the number of obsoleted changesets...

              r33542
            
        obsoleted 1 changesets

        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
        $ hg log -G --hidden

        @  25c56d33e4c4 (draft): B1

        |

        | o  a0802eb7fc1b (draft): A1

        | |

        | o  0f88766e02d6 (draft): C0

        |/

        | x  d73caddc5533 (draft): B0

        | |

        | x  8aaa48160adc (draft): A0

        |/

        o  1e4be0697311 (public): root

      Actual testing

      --------------

        $ hg push

        Matt Harbison
    
tests: remove (glob) annotations that were only for '\' matches...

              r35394
            
        pushing to $TESTTMP/A7/server

        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 2 changesets with 2 changes to 2 files (+1 heads)

        2 new obsolescence markers

        marmoute
    
obsolete: reports the number of local changeset obsoleted when unbundling...

              r33249
            
        obsoleted 2 changesets

        Pierre-Yves David
    
obsolescence: add test for the "branch replacement" logic during push, case A7...

              r31980
            
        $ cd ../..

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Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980	====================================
		Testing head checking code: Case A-7
		====================================

		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 A: simple case involving a branch being superceeded by another.
		TestCase 7: multi-changeset branch, split on multiple other, (head on its own branch), same number of head

		.. old-state:
		..
		.. * 2 branch (1-changeset, and 2-changesets)
		..
		.. new-state:
		..
		.. * 1 new branch superceeding the head of the old-2-changesets-branch,
		.. * 1 new changesets on the old-1-changeset-branch superceeding the base of the other
		..
		.. expected-result:
		..
		.. * push allowed
		..
		.. graph-summary:
		..
		.. B ø⇠◔ B'
		.. \| \|
		.. A'◔⇢ø \|
		.. \| \|/
		.. C ● \|
		.. \\|
		.. ●

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

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

		$ mkdir A7
		$ cd A7
		$ setuprepos
		creating basic server and client repo
		updating to branch default
		2 files updated, 0 files merged, 0 files removed, 0 files unresolved
		$ cd server
		$ mkcommit B0
		$ hg up 0
		0 files updated, 0 files merged, 2 files removed, 0 files unresolved
		$ mkcommit C0
		created new head
		$ cd ../client
		$ hg pull
Matt Harbison tests: remove (glob) annotations that were only for '\' matches...	r35394	pulling from $TESTTMP/A7/server
Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980	searching for changes
		adding changesets
		adding manifests
		adding file changes
		added 2 changesets with 2 changes to 2 files (+1 heads)
Boris Feld phase: report number of non-public changeset alongside the new range...	r39516	new changesets d73caddc5533:0f88766e02d6 (2 drafts)
Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980	(run 'hg heads' to see heads, 'hg merge' to merge)
		$ hg up 'desc(C0)'
		1 files updated, 0 files merged, 1 files removed, 0 files unresolved
		$ mkcommit A1
		$ hg up 0
		0 files updated, 0 files merged, 2 files removed, 0 files unresolved
		$ mkcommit B1
		created new head
		$ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
Boris Feld debugobsolete: also report the number of obsoleted changesets...	r33542	obsoleted 1 changesets
Martin von Zweigbergk evolution: report new unstable changesets...	r35727	1 new orphan changesets
Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980	$ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
Boris Feld debugobsolete: also report the number of obsoleted changesets...	r33542	obsoleted 1 changesets
Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980	$ hg log -G --hidden
		@ 25c56d33e4c4 (draft): B1
		\|
		\| o a0802eb7fc1b (draft): A1
		\| \|
		\| o 0f88766e02d6 (draft): C0
		\|/
		\| x d73caddc5533 (draft): B0
		\| \|
		\| x 8aaa48160adc (draft): A0
		\|/
		o 1e4be0697311 (public): root


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

		$ hg push
Matt Harbison tests: remove (glob) annotations that were only for '\' matches...	r35394	pushing to $TESTTMP/A7/server
Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980	searching for changes
		adding changesets
		adding manifests
		adding file changes
		added 2 changesets with 2 changes to 2 files (+1 heads)
		2 new obsolescence markers
marmoute obsolete: reports the number of local changeset obsoleted when unbundling...	r33249	obsoleted 2 changesets
Pierre-Yves David obsolescence: add test for the "branch replacement" logic during push, case A7...	r31980
		$ cd ../..