Mercurial > hg
view tests/test-convert-tla.t @ 17103:5146de7bce96
convert: keep branch switching merges with ancestors (issue3340)
When running convert with a filemap, merge parents which are ancestors
of other parents are ignored. This is hardly a problem when parents
belong to the same branch, but the result could be confusing when named
branches are involved. With:
-o-a1-a2-a3... <- A
\ \
b1-b2-b3...-m- <- B
If all b* revisions are discarded, it is useful to preserve 'm' even if
it is empty after filtering to record the branch switch.
This patch makes filemap preserve "ancestor parents" if there is no
"non-ancestor parent" on the same branch than the merge revision.
Remarks:
- I am not completely convinced by the reasons given above and those
detailed by Matt in this thread:
http://selenic.com/pipermail/mercurial-devel/2012-May/040627.html
The properties we try to preserve are not clearly defined. That said,
I know this patch already helped someone on IRC and the tests output
look reasonable.
- This is a new version of the original "convert: filemap must preserve
fast-forward merges" patch. It has exactly the same output for 2
parents merges, the additional complexity is here to handle more than
two parents.
author | Patrick Mezard <patrick@mezard.eu> |
---|---|
date | Mon, 18 Jun 2012 18:19:28 +0200 |
parents | e0348815e806 |
children | aa9385f983fa |
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$ "$TESTDIR/hghave" tla symlink || exit 80 $ tla my-id "mercurial <mercurial@selenic.com>" $ echo "[extensions]" >> $HGRCPATH $ echo "convert=" >> $HGRCPATH $ echo 'graphlog =' >> $HGRCPATH create tla archive $ tla make-archive tla@mercurial--convert `pwd`/hg-test-convert-tla initialize tla repo $ mkdir tla-repo $ cd tla-repo/ $ tla init-tree tla@mercurial--convert/tla--test--0 $ tla import * creating version tla@mercurial--convert/tla--test--0 * imported tla@mercurial--convert/tla--test--0 create initial files $ echo 'this is a file' > a $ tla add a $ mkdir src $ tla add src $ cd src $ dd count=1 if=/dev/zero of=b > /dev/null 2> /dev/null $ tla add b $ tla commit -s "added a file, src and src/b (binary)" A/ .arch-ids A/ src A/ src/.arch-ids A .arch-ids/a.id A a A src/.arch-ids/=id A src/.arch-ids/b.id A src/b * update pristine tree (tla@mercurial--convert/tla--test--0--base-0 => tla--test--0--patch-1) * committed tla@mercurial--convert/tla--test--0--patch-1 create link file and modify a $ ln -s ../a a-link $ tla add a-link $ echo 'this a modification to a' >> ../a $ tla commit -s "added link to a and modify a" A src/.arch-ids/a-link.id A src/a-link M a * update pristine tree (tla@mercurial--convert/tla--test--0--patch-1 => tla--test--0--patch-2) * committed tla@mercurial--convert/tla--test--0--patch-2 create second link and modify b $ ln -s ../a a-link-2 $ tla add a-link-2 $ dd count=1 seek=1 if=/dev/zero of=b > /dev/null 2> /dev/null $ tla commit -s "added second link and modify b" A src/.arch-ids/a-link-2.id A src/a-link-2 Mb src/b * update pristine tree (tla@mercurial--convert/tla--test--0--patch-2 => tla--test--0--patch-3) * committed tla@mercurial--convert/tla--test--0--patch-3 b file to link and a-link-2 to regular file $ rm -f a-link-2 $ echo 'this is now a regular file' > a-link-2 $ ln -sf ../a b $ tla commit -s "file to link and link to file test" fl src/b lf src/a-link-2 * update pristine tree (tla@mercurial--convert/tla--test--0--patch-3 => tla--test--0--patch-4) * committed tla@mercurial--convert/tla--test--0--patch-4 move a-link-2 file and src directory $ cd .. $ tla mv src/a-link-2 c $ tla mv src test $ tla commit -s "move and rename a-link-2 file and src directory" D/ src/.arch-ids A/ test/.arch-ids /> src test => src/.arch-ids/a-link-2.id .arch-ids/c.id => src/a-link-2 c => src/.arch-ids/=id test/.arch-ids/=id => src/.arch-ids/a-link.id test/.arch-ids/a-link.id => src/.arch-ids/b.id test/.arch-ids/b.id * update pristine tree (tla@mercurial--convert/tla--test--0--patch-4 => tla--test--0--patch-5) * committed tla@mercurial--convert/tla--test--0--patch-5 $ cd .. converting tla repo to Mercurial $ hg convert tla-repo tla-repo-hg initializing destination tla-repo-hg repository analyzing tree version tla@mercurial--convert/tla--test--0... scanning source... sorting... converting... 5 initial import 4 added a file, src and src/b (binary) 3 added link to a and modify a 2 added second link and modify b 1 file to link and link to file test 0 move and rename a-link-2 file and src directory $ tla register-archive -d tla@mercurial--convert $ glog() > { > hg glog --template '{rev} "{desc|firstline}" files: {files}\n' "$@" > } show graph log $ glog -R tla-repo-hg o 5 "move and rename a-link-2 file and src directory" files: c src/a-link src/a-link-2 src/b test/a-link test/b | o 4 "file to link and link to file test" files: src/a-link-2 src/b | o 3 "added second link and modify b" files: src/a-link-2 src/b | o 2 "added link to a and modify a" files: a src/a-link | o 1 "added a file, src and src/b (binary)" files: a src/b | o 0 "initial import" files: $ hg up -q -R tla-repo-hg $ hg -R tla-repo-hg manifest --debug c4072c4b72e1cabace081888efa148ee80ca3cbb 644 a 0201ac32a3a8e86e303dff60366382a54b48a72e 644 c c0067ba5ff0b7c9a3eb17270839d04614c435623 644 @ test/a-link 375f4263d86feacdea7e3c27100abd1560f2a973 644 @ test/b