Mercurial > hg
view tests/test-copies-in-changeset.t @ 48454:473af5cbc209
rhg: Add support for `rhg status --copies`
Copy sources are collected during `status()` rather than after the fact like
in Python, because `status()` takes a `&mut` exclusive reference to the dirstate map
(in order to potentially mutate it for directory mtimes) and returns `Cow<'_, HgPath>`
that borrow the dirstate map.
Even though with `Cow` only some shared borrows remain, the still extend the same
lifetime of the initial `&mut` so the dirstate map cannot be borrowed again
to access copy sources after the fact:
https://doc.rust-lang.org/nomicon/lifetime-mismatch.html#limits-of-lifetimes
Additionally, collecting copy sources during the dirstate tree traversal that
`status()` already does avoids the cost of another traversal or other lookups
(though I haven’t benchmarked that cost).
Differential Revision: https://phab.mercurial-scm.org/D11899
author | Simon Sapin <simon.sapin@octobus.net> |
---|---|
date | Fri, 10 Dec 2021 16:18:58 +0100 |
parents | a43d256c041a |
children | 5d9ef794ea64 |
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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 dirstate-v2: no no no dotencode: yes yes yes generaldelta: yes yes yes share-safe: no no no sparserevlog: yes yes yes persistent-nodemap: no no no (no-rust !) persistent-nodemap: yes yes no (rust !) copies-sdc: yes yes no revlog-v2: no no no changelog-v2: yes yes no plain-cl-delta: yes yes yes compression: zlib zlib zlib (no-zstd !) compression: zstd zstd zstd (zstd !) compression-level: default default default #else $ hg debugformat -v format-variant repo config default fncache: yes yes yes dirstate-v2: no no no dotencode: yes yes yes generaldelta: yes yes yes share-safe: no no no sparserevlog: yes yes yes persistent-nodemap: no no no (no-rust !) persistent-nodemap: yes yes no (rust !) copies-sdc: no no no revlog-v2: no no no changelog-v2: no no no plain-cl-delta: yes yes yes compression: zlib zlib zlib (no-zstd !) compression: zstd zstd zstd (zstd !) 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 1 sidedata entries entry-0014 size 44 '\x00\x00\x00\x04\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00\x06\x00\x00\x00\x03\x00\x00\x00\x00\x06\x00\x00\x00\x04\x00\x00\x00\x00abcd' #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 1 sidedata entries entry-0014 size 25 '\x00\x00\x00\x02\x0c\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x03\x00\x00\x00\x00bb2' #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-0014 size 25 '\x00\x00\x00\x02\x00\x00\x00\x00\x02\x00\x00\x00\x00\x16\x00\x00\x00\x03\x00\x00\x00\x00b2c' #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 1 sidedata entries entry-0014 size 64 '\x00\x00\x00\x06\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x06\x00\x00\x00\x04\x00\x00\x00\x00\x07\x00\x00\x00\x05\x00\x00\x00\x01\x06\x00\x00\x00\x06\x00\x00\x00\x02adfghi' #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 1 sidedata entries entry-0014 size 24 '\x00\x00\x00\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00aj' #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 1 sidedata entries entry-0014 size 24 '\x00\x00\x00\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00aj' #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 1 sidedata entries entry-0014 size 14 '\x00\x00\x00\x01\x14\x00\x00\x00\x01\x00\x00\x00\x00j' #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 1 sidedata entries entry-0014 size 24 '\x00\x00\x00\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00ak' #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' Not only do we want this to run in-memory, it shouldn't fall back to on-disk merge (no conflicts), so we force it to be in-memory with no fallback. $ hg rebase -d 1 --config rebase.experimental.inmemory=yes --config devel.rebase.force-in-memory-merge=yes rebasing 2:* tip "rename a to b" (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 $ hg debugformat -v format-variant repo config default fncache: yes yes yes dirstate-v2: no no no dotencode: yes yes yes generaldelta: yes yes yes share-safe: no no no sparserevlog: yes yes yes persistent-nodemap: no no no (no-rust !) persistent-nodemap: yes yes no (rust !) copies-sdc: yes yes no revlog-v2: no no no changelog-v2: yes yes no plain-cl-delta: yes yes yes compression: zlib zlib zlib (no-zstd !) compression: zstd zstd zstd (zstd !) compression-level: default default default $ hg debugsidedata -c -- 0 1 sidedata entries entry-0014 size 14 $ hg debugsidedata -c -- 1 1 sidedata entries entry-0014 size 14 $ hg debugsidedata -m -- 0 $ cat << EOF > .hg/hgrc > [format] > exp-use-copies-side-data-changeset = no > [experimental] > revlogv2 = enable-unstable-format-and-corrupt-my-data > EOF $ hg debugupgraderepo --run --quiet --no-backup > /dev/null $ hg debugformat -v format-variant repo config default fncache: yes yes yes dirstate-v2: no no no dotencode: yes yes yes generaldelta: yes yes yes share-safe: no no no sparserevlog: yes yes yes persistent-nodemap: no no no (no-rust !) persistent-nodemap: yes yes no (rust !) copies-sdc: no no no revlog-v2: yes yes no changelog-v2: no no no plain-cl-delta: yes yes yes compression: zlib zlib zlib (no-zstd !) compression: zstd zstd zstd (zstd !) 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 dirstate-v2: no no no dotencode: yes yes yes generaldelta: yes yes yes share-safe: no no no sparserevlog: yes yes yes persistent-nodemap: no no no (no-rust !) persistent-nodemap: yes yes no (rust !) copies-sdc: yes yes no revlog-v2: no no no changelog-v2: yes yes no plain-cl-delta: yes yes yes compression: zlib zlib zlib (no-zstd !) compression: zstd zstd zstd (zstd !) compression-level: default default default $ hg debugsidedata -c -- 0 1 sidedata entries entry-0014 size 14 $ hg debugsidedata -c -- 1 1 sidedata entries entry-0014 size 14 $ hg debugsidedata -m -- 0 #endif $ cd ..