Mercurial > hg
view tests/test-convert-baz.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 | 5efe9c6a34fe |
children | aa9385f983fa |
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$ "$TESTDIR/hghave" baz symlink || exit 80 $ baz my-id "mercurial <mercurial@selenic.com>" $ echo "[extensions]" >> $HGRCPATH $ echo "convert=" >> $HGRCPATH $ echo 'graphlog =' >> $HGRCPATH create baz archive $ baz make-archive baz@mercurial--convert hg-test-convert-baz initialize baz repo $ mkdir baz-repo $ cd baz-repo/ $ baz init-tree baz@mercurial--convert/baz--test--0 $ baz import * creating version baz@mercurial--convert/baz--test--0 * imported baz@mercurial--convert/baz--test--0 create initial files $ echo 'this is a file' > a $ baz add a $ mkdir src $ baz add src $ cd src $ dd count=1 if=/dev/zero of=b > /dev/null 2> /dev/null $ baz add b HACK: hide GNU tar-1.22 "tar: The --preserve option is deprecated, use --preserve-permissions --preserve-order instead" $ baz commit -s "added a file, src and src/b (binary)" 2>&1 | grep -v '^tar' * build pristine tree for baz@mercurial--convert/baz--test--0--base-0 * Scanning for full-tree revision: . * from import revision: baz@mercurial--convert/baz--test--0--base-0 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 (baz@mercurial--convert/baz--test--0--base-0 => baz--test--0--patch-1) * committed baz@mercurial--convert/baz--test--0--patch-1 create link file and modify a $ ln -s ../a a-link $ baz add a-link $ echo 'this a modification to a' >> ../a $ baz 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 (baz@mercurial--convert/baz--test--0--patch-1 => baz--test--0--patch-2) * committed baz@mercurial--convert/baz--test--0--patch-2 create second link and modify b $ ln -s ../a a-link-2 $ baz add a-link-2 $ dd count=1 seek=1 if=/dev/zero of=b > /dev/null 2> /dev/null $ baz 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 (baz@mercurial--convert/baz--test--0--patch-2 => baz--test--0--patch-3) * committed baz@mercurial--convert/baz--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 $ baz commit -s "file to link and link to file test" fl src/b lf src/a-link-2 * update pristine tree (baz@mercurial--convert/baz--test--0--patch-3 => baz--test--0--patch-4) * committed baz@mercurial--convert/baz--test--0--patch-4 move a-link-2 file and src directory $ cd .. $ baz mv src/a-link-2 c $ baz mv src test $ baz 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 (baz@mercurial--convert/baz--test--0--patch-4 => baz--test--0--patch-5) * committed baz@mercurial--convert/baz--test--0--patch-5 move and add the moved file again $ echo e > e $ baz add e $ baz commit -s "add e" A .arch-ids/e.id A e * update pristine tree (baz@mercurial--convert/baz--test--0--patch-5 => baz--test--0--patch-6) * committed baz@mercurial--convert/baz--test--0--patch-6 $ baz mv e f $ echo ee > e $ baz add e $ baz commit -s "move e and recreate it again" A .arch-ids/e.id A e => .arch-ids/e.id .arch-ids/f.id => e f * update pristine tree (baz@mercurial--convert/baz--test--0--patch-6 => baz--test--0--patch-7) * committed baz@mercurial--convert/baz--test--0--patch-7 $ cd .. converting baz repo to Mercurial $ hg convert baz-repo baz-repo-hg initializing destination baz-repo-hg repository analyzing tree version baz@mercurial--convert/baz--test--0... scanning source... sorting... converting... 7 initial import 6 added a file, src and src/b (binary) 5 added link to a and modify a 4 added second link and modify b 3 file to link and link to file test 2 move and rename a-link-2 file and src directory 1 add e 0 move e and recreate it again $ baz register-archive -d baz@mercurial--convert $ glog() > { > hg glog --template '{rev} "{desc|firstline}" files: {files}\n' "$@" > } show graph log $ glog -R baz-repo-hg o 7 "move e and recreate it again" files: e f | o 6 "add e" files: e | 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 baz-repo-hg $ hg -R baz-repo-hg manifest --debug c4072c4b72e1cabace081888efa148ee80ca3cbb 644 a 0201ac32a3a8e86e303dff60366382a54b48a72e 644 c 1a4a864db0073705a11b1439f563bfa4b46d9246 644 e 09e0222742fc3f75777fa9d68a5d8af7294cb5e7 644 f c0067ba5ff0b7c9a3eb17270839d04614c435623 644 @ test/a-link 375f4263d86feacdea7e3c27100abd1560f2a973 644 @ test/b $ hg -R baz-repo-hg log -r 5 -r 7 -C --debug | grep copies copies: c (src/a-link-2) test/a-link (src/a-link) test/b (src/b) copies: f (e)