Mercurial > hg
view tests/test-copies-in-changeset.t @ 45584:4c8a93ec6908
merge: store commitinfo if these is a dc or cd conflict
delete-changed or changed-delete conflicts can either be resolved by mergetool,
if some tool is passed and using or by user choose something on prompt or user
doing some `hg revert` after choosing the file to remain conflicted.
If the user decides to keep the changed side, on commit we just reuse the parent
filenode. This is mostly fine unless we are in a distributed environment and
people are doing criss-cross merges.
Since, we don't have recursive merges or any other way of describing the end
result of the merge was an explicit choice and it should be differentiated from
it's ancestors, merge algo during criss-cross merges fails to take in account
the explicit choice made by user and end up with a what-can-be-said-wrong-merge.
The solution which we are trying to fix this is by creating a filenode on commit
instead of reusing the parent filenode. This helps differentiate between
pre-merged filenode and post-merge filenode and kind of tells about the choice
user made.
To implement creating new filenode functionality, we store info about these
files in mergestate so that we can read them on commit and force create a new
filenode.
Differential Revision: https://phab.mercurial-scm.org/D8988
author | Pulkit Goyal <7895pulkit@gmail.com> |
---|---|
date | Thu, 03 Sep 2020 13:44:06 +0530 |
parents | ea9563e9e65a |
children | 9a6b409b8ebc |
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#testcases extra sidedata #if extra $ cat >> $HGRCPATH << EOF > [experimental] > copies.write-to=changeset-only > copies.read-from=changeset-only > [alias] > changesetcopies = log -r . -T 'files: {files} > {extras % "{ifcontains("files", key, "{key}: {value}\n")}"} > {extras % "{ifcontains("copies", key, "{key}: {value}\n")}"}' > EOF #endif #if sidedata $ cat >> $HGRCPATH << EOF > [format] > exp-use-copies-side-data-changeset = yes > EOF #endif $ cat >> $HGRCPATH << EOF > [alias] > showcopies = log -r . -T '{file_copies % "{source} -> {name}\n"}' > [extensions] > rebase = > split = > EOF Check that copies are recorded correctly $ hg init repo $ cd repo #if sidedata $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes sidedata: yes yes no persistent-nodemap: no no no copies-sdc: yes yes no plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default #else $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes sidedata: no no no persistent-nodemap: no no no copies-sdc: no no no plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default #endif $ echo a > a $ hg add a $ hg ci -m initial $ hg cp a b $ hg cp a c $ hg cp a d $ hg ci -m 'copy a to b, c, and d' #if extra $ hg changesetcopies files: b c d filesadded: 0 1 2 p1copies: 0\x00a (esc) 1\x00a (esc) 2\x00a (esc) #else $ hg debugsidedata -c -v -- -1 2 sidedata entries entry-0010 size 11 '0\x00a\n1\x00a\n2\x00a' entry-0012 size 5 '0\n1\n2' #endif $ hg showcopies a -> b a -> c a -> d #if extra $ hg showcopies --config experimental.copies.read-from=compatibility a -> b a -> c a -> d $ hg showcopies --config experimental.copies.read-from=filelog-only #endif Check that renames are recorded correctly $ hg mv b b2 $ hg ci -m 'rename b to b2' #if extra $ hg changesetcopies files: b b2 filesadded: 1 filesremoved: 0 p1copies: 1\x00b (esc) #else $ hg debugsidedata -c -v -- -1 3 sidedata entries entry-0010 size 3 '1\x00b' entry-0012 size 1 '1' entry-0013 size 1 '0' #endif $ hg showcopies b -> b2 Rename onto existing file. This should get recorded in the changeset files list and in the extras, even though there is no filelog entry. $ hg cp b2 c --force $ hg st --copies M c b2 #if extra $ hg debugindex c rev linkrev nodeid p1 p2 0 1 b789fdd96dc2 000000000000 000000000000 #else $ hg debugindex c rev linkrev nodeid p1 p2 0 1 37d9b5d994ea 000000000000 000000000000 #endif $ hg ci -m 'move b onto d' #if extra $ hg changesetcopies files: c p1copies: 0\x00b2 (esc) #else $ hg debugsidedata -c -v -- -1 1 sidedata entries entry-0010 size 4 '0\x00b2' #endif $ hg showcopies b2 -> c #if extra $ hg debugindex c rev linkrev nodeid p1 p2 0 1 b789fdd96dc2 000000000000 000000000000 #else $ hg debugindex c rev linkrev nodeid p1 p2 0 1 37d9b5d994ea 000000000000 000000000000 1 3 029625640347 000000000000 000000000000 #endif Create a merge commit with copying done during merge. $ hg co 0 0 files updated, 0 files merged, 3 files removed, 0 files unresolved $ hg cp a e $ hg cp a f $ hg ci -m 'copy a to e and f' created new head $ hg merge 3 3 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) File 'a' exists on both sides, so 'g' could be recorded as being from p1 or p2, but we currently always record it as being from p1 $ hg cp a g File 'd' exists only in p2, so 'h' should be from p2 $ hg cp d h File 'f' exists only in p1, so 'i' should be from p1 $ hg cp f i $ hg ci -m 'merge' #if extra $ hg changesetcopies files: g h i filesadded: 0 1 2 p1copies: 0\x00a (esc) 2\x00f (esc) p2copies: 1\x00d (esc) #else $ hg debugsidedata -c -v -- -1 3 sidedata entries entry-0010 size 7 '0\x00a\n2\x00f' entry-0011 size 3 '1\x00d' entry-0012 size 5 '0\n1\n2' #endif $ hg showcopies a -> g d -> h f -> i Test writing to both changeset and filelog $ hg cp a j #if extra $ hg ci -m 'copy a to j' --config experimental.copies.write-to=compatibility $ hg changesetcopies files: j filesadded: 0 filesremoved: p1copies: 0\x00a (esc) p2copies: #else $ hg ci -m 'copy a to j' $ hg debugsidedata -c -v -- -1 2 sidedata entries entry-0010 size 3 '0\x00a' entry-0012 size 1 '0' #endif $ hg debugdata j 0 \x01 (esc) copy: a copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 \x01 (esc) a $ hg showcopies a -> j $ hg showcopies --config experimental.copies.read-from=compatibility a -> j $ hg showcopies --config experimental.copies.read-from=filelog-only a -> j Existing copy information in the changeset gets removed on amend and writing copy information on to the filelog #if extra $ hg ci --amend -m 'copy a to j, v2' \ > --config experimental.copies.write-to=filelog-only saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-*-amend.hg (glob) $ hg changesetcopies files: j #else $ hg ci --amend -m 'copy a to j, v2' saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-*-amend.hg (glob) $ hg debugsidedata -c -v -- -1 2 sidedata entries entry-0010 size 3 '0\x00a' entry-0012 size 1 '0' #endif $ hg showcopies --config experimental.copies.read-from=filelog-only a -> j The entries should be written to extras even if they're empty (so the client won't have to fall back to reading from filelogs) $ echo x >> j #if extra $ hg ci -m 'modify j' --config experimental.copies.write-to=compatibility $ hg changesetcopies files: j filesadded: filesremoved: p1copies: p2copies: #else $ hg ci -m 'modify j' $ hg debugsidedata -c -v -- -1 #endif Test writing only to filelog $ hg cp a k #if extra $ hg ci -m 'copy a to k' --config experimental.copies.write-to=filelog-only $ hg changesetcopies files: k #else $ hg ci -m 'copy a to k' $ hg debugsidedata -c -v -- -1 2 sidedata entries entry-0010 size 3 '0\x00a' entry-0012 size 1 '0' #endif $ hg debugdata k 0 \x01 (esc) copy: a copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 \x01 (esc) a #if extra $ hg showcopies $ hg showcopies --config experimental.copies.read-from=compatibility a -> k $ hg showcopies --config experimental.copies.read-from=filelog-only a -> k #else $ hg showcopies a -> k #endif $ cd .. Test rebasing a commit with copy information $ hg init rebase-rename $ cd rebase-rename $ echo a > a $ hg ci -Aqm 'add a' $ echo a2 > a $ hg ci -m 'modify a' $ hg co -q 0 $ hg mv a b $ hg ci -qm 'rename a to b' $ hg rebase -d 1 --config rebase.experimental.inmemory=yes rebasing 2:* "rename a to b" (tip) (glob) merging a and b to b saved backup bundle to $TESTTMP/rebase-rename/.hg/strip-backup/*-*-rebase.hg (glob) $ hg st --change . --copies A b a R a $ cd .. Test splitting a commit $ hg init split $ cd split $ echo a > a $ echo b > b $ hg ci -Aqm 'add a and b' $ echo a2 > a $ hg mv b c $ hg ci -m 'modify a, move b to c' $ hg --config ui.interactive=yes split <<EOF > y > y > n > y > EOF diff --git a/a b/a 1 hunks, 1 lines changed examine changes to 'a'? (enter ? for help) [Ynesfdaq?] y @@ -1,1 +1,1 @@ -a +a2 record this change to 'a'? (enter ? for help) [Ynesfdaq?] y diff --git a/b b/c rename from b rename to c examine changes to 'b' and 'c'? (enter ? for help) [Ynesfdaq?] n created new head diff --git a/b b/c rename from b rename to c examine changes to 'b' and 'c'? (enter ? for help) [Ynesfdaq?] y saved backup bundle to $TESTTMP/split/.hg/strip-backup/*-*-split.hg (glob) $ cd .. Test committing half a rename $ hg init partial $ cd partial $ echo a > a $ hg ci -Aqm 'add a' $ hg mv a b $ hg ci -m 'remove a' a #if sidedata Test upgrading/downgrading to sidedata storage ============================================== downgrading (keeping some sidedata) $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes sidedata: yes yes no persistent-nodemap: no no no copies-sdc: yes yes no plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugsidedata -c -- 0 1 sidedata entries entry-0012 size 1 $ hg debugsidedata -c -- 1 1 sidedata entries entry-0013 size 1 $ hg debugsidedata -m -- 0 $ cat << EOF > .hg/hgrc > [format] > exp-use-side-data = yes > exp-use-copies-side-data-changeset = no > EOF $ hg debugupgraderepo --run --quiet --no-backup > /dev/null $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes sidedata: yes yes no persistent-nodemap: no no no copies-sdc: no no no plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugsidedata -c -- 0 $ hg debugsidedata -c -- 1 $ hg debugsidedata -m -- 0 upgrading $ cat << EOF > .hg/hgrc > [format] > exp-use-copies-side-data-changeset = yes > EOF $ hg debugupgraderepo --run --quiet --no-backup > /dev/null $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes sidedata: yes yes no persistent-nodemap: no no no copies-sdc: yes yes no plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugsidedata -c -- 0 1 sidedata entries entry-0012 size 1 $ hg debugsidedata -c -- 1 1 sidedata entries entry-0013 size 1 $ hg debugsidedata -m -- 0 #endif $ cd ..