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strip: incrementally update the branchheads cache after a strip...
strip: incrementally update the branchheads cache after a strip This function augments strip to incrementally update the branchheads cache rather than recompute it from scratch. This speeds up the performance of strip and rebase on repos with long history. The performance optimization only happens if the revisions stripped are all on the same branch and the parents of the stripped revisions are also on that same branch. This adds a few test cases, particularly one that reproduces the extra heads that mpm observed.

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test-rebase-rename.t
171 lines | 2.6 KiB | text/troff | Tads3Lexer
/ tests / test-rebase-rename.t
$ cat >> $HGRCPATH <<EOF
> [extensions]
> graphlog=
> rebase=
>
> [alias]
> tlog = log --template "{rev}: '{desc}' {branches}\n"
> tglog = tlog --graph
> EOF
$ hg init a
$ cd a
$ echo a > a
$ hg ci -Am A
adding a
$ echo b > b
$ hg ci -Am B
adding b
$ hg up -q -C 0
$ hg mv a a-renamed
$ hg ci -m 'rename A'
created new head
$ hg tglog
@ 2: 'rename A'
|
| o 1: 'B'
|/
o 0: 'A'
Rename is tracked:
$ hg tlog -p --git -r tip
2: 'rename A'
diff --git a/a b/a-renamed
rename from a
rename to a-renamed
Rebase the revision containing the rename:
$ hg rebase -s 2 -d 1
saved backup bundle to $TESTTMP/a/.hg/strip-backup/*-backup.hg (glob)
$ hg tglog
@ 2: 'rename A'
|
o 1: 'B'
|
o 0: 'A'
Rename is not lost:
$ hg tlog -p --git -r tip
2: 'rename A'
diff --git a/a b/a-renamed
rename from a
rename to a-renamed
$ cd ..
$ hg init b
$ cd b
$ echo a > a
$ hg ci -Am A
adding a
$ echo b > b
$ hg ci -Am B
adding b
$ hg up -q -C 0
$ hg cp a a-copied
$ hg ci -m 'copy A'
created new head
$ hg tglog
@ 2: 'copy A'
|
| o 1: 'B'
|/
o 0: 'A'
Copy is tracked:
$ hg tlog -p --git -r tip
2: 'copy A'
diff --git a/a b/a-copied
copy from a
copy to a-copied
Rebase the revision containing the copy:
$ hg rebase -s 2 -d 1
saved backup bundle to $TESTTMP/b/.hg/strip-backup/*-backup.hg (glob)
$ hg tglog
@ 2: 'copy A'
|
o 1: 'B'
|
o 0: 'A'
Copy is not lost:
$ hg tlog -p --git -r tip
2: 'copy A'
diff --git a/a b/a-copied
copy from a
copy to a-copied
$ cd ..
Test rebase across repeating renames:
$ hg init repo
$ cd repo
$ echo testing > file1.txt
$ hg add file1.txt
$ hg ci -m "Adding file1"
$ hg rename file1.txt file2.txt
$ hg ci -m "Rename file1 to file2"
$ echo Unrelated change > unrelated.txt
$ hg add unrelated.txt
$ hg ci -m "Unrelated change"
$ hg rename file2.txt file1.txt
$ hg ci -m "Rename file2 back to file1"
$ hg update -r -2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo Another unrelated change >> unrelated.txt
$ hg ci -m "Another unrelated change"
created new head
$ hg tglog
@ 4: 'Another unrelated change'
|
| o 3: 'Rename file2 back to file1'
|/
o 2: 'Unrelated change'
|
o 1: 'Rename file1 to file2'
|
o 0: 'Adding file1'
$ hg rebase -s 4 -d 3
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-backup.hg (glob)
$ hg diff --stat -c .
unrelated.txt | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
$ cd ..