git/t/t3200-branch.sh
Jeff King a1c1d8170d refs_resolve_ref_unsafe: handle d/f conflicts for writes
If our call to refs_read_raw_ref() fails, we check errno to
see if the ref is simply missing, or if we encountered a
more serious error. If it's just missing, then in "write"
mode (i.e., when RESOLVE_REFS_READING is not set), this is
perfectly fine.

However, checking for ENOENT isn't sufficient to catch all
missing-ref cases. In the filesystem backend, we may also
see EISDIR when we try to resolve "a" and "a/b" exists.
Likewise, we may see ENOTDIR if we try to resolve "a/b" and
"a" exists. In both of those cases, we know that our
resolved ref doesn't exist, but we return an error (rather
than reporting the refname and returning a null sha1).

This has been broken for a long time, but nobody really
noticed because the next step after resolving without the
READING flag is usually to lock the ref and write it. But in
both of those cases, the write will fail with the same
errno due to the directory/file conflict.

There are two cases where we can notice this, though:

  1. If we try to write "a" and there's a leftover directory
     already at "a", even though there is no ref "a/b". The
     actual write is smart enough to move the empty "a" out
     of the way.

     This is reasonably rare, if only because the writing
     code has to do an independent resolution before trying
     its write (because the actual update_ref() code handles
     this case fine). The notes-merge code does this, and
     before the fix in the prior commit t3308 erroneously
     expected this case to fail.

  2. When resolving symbolic refs, we typically do not use
     the READING flag because we want to resolve even
     symrefs that point to unborn refs. Even if those unborn
     refs could not actually be written because of d/f
     conflicts with existing refs.

     You can see this by asking "git symbolic-ref" to report
     the target of a symref pointing past a d/f conflict.

We can fix the problem by recognizing the other "missing"
errnos and treating them like ENOENT. This should be safe to
do even for callers who are then going to actually write the
ref, because the actual writing process will fail if the d/f
conflict is a real one (and t1404 checks these cases).

Arguably this should be the responsibility of the
files-backend to normalize all "missing ref" errors into
ENOENT (since something like EISDIR may not be meaningful at
all to a database backend). However other callers of
refs_read_raw_ref() may actually care about the distinction;
putting this into resolve_ref() is the minimal fix for now.

The new tests in t1401 use git-symbolic-ref, which is the
most direct way to check the resolution by itself.
Interestingly we actually had a test that setup this case
already, but we only used it to verify that the funny state
could be overwritten, not that it could be resolved.

We also add a new test in t3200, as "branch -m" was the
original motivation for looking into this. What happens is
this:

  0. HEAD is pointing to branch "a"

  1. The user asks to rename "a" to "a/b".

  2. We create "a/b" and delete "a".

  3. We then try to update any worktree HEADs that point to
     the renamed ref (including the main repo HEAD). To do
     that, we have to resolve each HEAD. But now our HEAD is
     pointing at "a", and we get EISDIR due to the loose
     "a/b". As a result, we think there is no HEAD, and we
     do not update it. It now points to the bogus "a".

Interestingly this case used to work, but only accidentally.
Before 31824d180d (branch: fix branch renaming not updating
HEADs correctly, 2017-08-24), we'd update any HEAD which we
couldn't resolve. That was wrong, but it papered over the
fact that we were incorrectly failing to resolve HEAD.

So while the bug demonstrated by the git-symbolic-ref is
quite old, the regression to "branch -m" is recent.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-07 10:32:13 +09:00

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#!/bin/sh
#
# Copyright (c) 2005 Amos Waterland
#
test_description='git branch assorted tests'
. ./test-lib.sh
test_expect_success 'prepare a trivial repository' '
echo Hello >A &&
git update-index --add A &&
git commit -m "Initial commit." &&
echo World >>A &&
git update-index --add A &&
git commit -m "Second commit." &&
HEAD=$(git rev-parse --verify HEAD)
'
test_expect_success 'git branch --help should not have created a bogus branch' '
test_might_fail git branch --man --help </dev/null >/dev/null 2>&1 &&
test_path_is_missing .git/refs/heads/--help
'
test_expect_success 'branch -h in broken repository' '
mkdir broken &&
(
cd broken &&
git init &&
>.git/refs/heads/master &&
test_expect_code 129 git branch -h >usage 2>&1
) &&
test_i18ngrep "[Uu]sage" broken/usage
'
test_expect_success 'git branch abc should create a branch' '
git branch abc && test_path_is_file .git/refs/heads/abc
'
test_expect_success 'git branch a/b/c should create a branch' '
git branch a/b/c && test_path_is_file .git/refs/heads/a/b/c
'
test_expect_success 'git branch HEAD should fail' '
test_must_fail git branch HEAD
'
cat >expect <<EOF
$_z40 $HEAD $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000 branch: Created from master
EOF
test_expect_success 'git branch -l d/e/f should create a branch and a log' '
GIT_COMMITTER_DATE="2005-05-26 23:30" \
git branch -l d/e/f &&
test_path_is_file .git/refs/heads/d/e/f &&
test_path_is_file .git/logs/refs/heads/d/e/f &&
test_cmp expect .git/logs/refs/heads/d/e/f
'
test_expect_success 'git branch -d d/e/f should delete a branch and a log' '
git branch -d d/e/f &&
test_path_is_missing .git/refs/heads/d/e/f &&
test_must_fail git reflog exists refs/heads/d/e/f
'
test_expect_success 'git branch j/k should work after branch j has been deleted' '
git branch j &&
git branch -d j &&
git branch j/k
'
test_expect_success 'git branch l should work after branch l/m has been deleted' '
git branch l/m &&
git branch -d l/m &&
git branch l
'
test_expect_success 'git branch -m dumps usage' '
test_expect_code 128 git branch -m 2>err &&
test_i18ngrep "branch name required" err
'
test_expect_success 'git branch -m m broken_symref should work' '
test_when_finished "git branch -D broken_symref" &&
git branch -l m &&
git symbolic-ref refs/heads/broken_symref refs/heads/i_am_broken &&
git branch -m m broken_symref &&
git reflog exists refs/heads/broken_symref &&
test_must_fail git reflog exists refs/heads/i_am_broken
'
test_expect_success 'git branch -m m m/m should work' '
git branch -l m &&
git branch -m m m/m &&
git reflog exists refs/heads/m/m
'
test_expect_success 'git branch -m n/n n should work' '
git branch -l n/n &&
git branch -m n/n n &&
git reflog exists refs/heads/n
'
# The topmost entry in reflog for branch bbb is about branch creation.
# Hence, we compare bbb@{1} (instead of bbb@{0}) with aaa@{0}.
test_expect_success 'git branch -m bbb should rename checked out branch' '
test_when_finished git branch -D bbb &&
test_when_finished git checkout master &&
git checkout -b aaa &&
git commit --allow-empty -m "a new commit" &&
git rev-parse aaa@{0} >expect &&
git branch -m bbb &&
git rev-parse bbb@{1} >actual &&
test_cmp expect actual &&
git symbolic-ref HEAD >actual &&
echo refs/heads/bbb >expect &&
test_cmp expect actual
'
test_expect_success 'renaming checked out branch works with d/f conflict' '
test_when_finished "git branch -D foo/bar || git branch -D foo" &&
test_when_finished git checkout master &&
git checkout -b foo &&
git branch -m foo/bar &&
git symbolic-ref HEAD >actual &&
echo refs/heads/foo/bar >expect &&
test_cmp expect actual
'
test_expect_success 'git branch -m o/o o should fail when o/p exists' '
git branch o/o &&
git branch o/p &&
test_must_fail git branch -m o/o o
'
test_expect_success 'git branch -m o/q o/p should fail when o/p exists' '
git branch o/q &&
test_must_fail git branch -m o/q o/p
'
test_expect_success 'git branch -M o/q o/p should work when o/p exists' '
git branch -M o/q o/p
'
test_expect_success 'git branch -m -f o/q o/p should work when o/p exists' '
git branch o/q &&
git branch -m -f o/q o/p
'
test_expect_success 'git branch -m q r/q should fail when r exists' '
git branch q &&
git branch r &&
test_must_fail git branch -m q r/q
'
test_expect_success 'git branch -M foo bar should fail when bar is checked out' '
git branch bar &&
git checkout -b foo &&
test_must_fail git branch -M bar foo
'
test_expect_success 'git branch -M baz bam should succeed when baz is checked out' '
git checkout -b baz &&
git branch bam &&
git branch -M baz bam &&
test $(git rev-parse --abbrev-ref HEAD) = bam
'
test_expect_success 'git branch -M baz bam should add entries to .git/logs/HEAD' '
msg="Branch: renamed refs/heads/baz to refs/heads/bam" &&
grep " 0\{40\}.*$msg$" .git/logs/HEAD &&
grep "^0\{40\}.*$msg$" .git/logs/HEAD
'
test_expect_success 'git branch -M should leave orphaned HEAD alone' '
git init orphan &&
(
cd orphan &&
test_commit initial &&
git checkout --orphan lonely &&
grep lonely .git/HEAD &&
test_path_is_missing .git/refs/head/lonely &&
git branch -M master mistress &&
grep lonely .git/HEAD
)
'
test_expect_success 'resulting reflog can be shown by log -g' '
oid=$(git rev-parse HEAD) &&
cat >expect <<-EOF &&
HEAD@{0} $oid $msg
HEAD@{2} $oid checkout: moving from foo to baz
EOF
git log -g --format="%gd %H %gs" -2 HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'git branch -M baz bam should succeed when baz is checked out as linked working tree' '
git checkout master &&
git worktree add -b baz bazdir &&
git worktree add -f bazdir2 baz &&
git branch -M baz bam &&
test $(git -C bazdir rev-parse --abbrev-ref HEAD) = bam &&
test $(git -C bazdir2 rev-parse --abbrev-ref HEAD) = bam
'
test_expect_success 'git branch -M baz bam should succeed within a worktree in which baz is checked out' '
git checkout -b baz &&
git worktree add -f bazdir3 baz &&
(
cd bazdir3 &&
git branch -M baz bam &&
test $(git rev-parse --abbrev-ref HEAD) = bam
) &&
test $(git rev-parse --abbrev-ref HEAD) = bam
'
test_expect_success 'git branch -M master should work when master is checked out' '
git checkout master &&
git branch -M master
'
test_expect_success 'git branch -M master master should work when master is checked out' '
git checkout master &&
git branch -M master master
'
test_expect_success 'git branch -M master2 master2 should work when master is checked out' '
git checkout master &&
git branch master2 &&
git branch -M master2 master2
'
test_expect_success 'git branch -v -d t should work' '
git branch t &&
test_path_is_file .git/refs/heads/t &&
git branch -v -d t &&
test_path_is_missing .git/refs/heads/t
'
test_expect_success 'git branch -v -m t s should work' '
git branch t &&
test_path_is_file .git/refs/heads/t &&
git branch -v -m t s &&
test_path_is_missing .git/refs/heads/t &&
test_path_is_file .git/refs/heads/s &&
git branch -d s
'
test_expect_success 'git branch -m -d t s should fail' '
git branch t &&
test_path_is_file .git/refs/heads/t &&
test_must_fail git branch -m -d t s &&
git branch -d t &&
test_path_is_missing .git/refs/heads/t
'
test_expect_success 'git branch --list -d t should fail' '
git branch t &&
test_path_is_file .git/refs/heads/t &&
test_must_fail git branch --list -d t &&
git branch -d t &&
test_path_is_missing .git/refs/heads/t
'
test_expect_success 'git branch --list -v with --abbrev' '
test_when_finished "git branch -D t" &&
git branch t &&
git branch -v --list t >actual.default &&
git branch -v --list --abbrev t >actual.abbrev &&
test_cmp actual.default actual.abbrev &&
git branch -v --list --no-abbrev t >actual.noabbrev &&
git branch -v --list --abbrev=0 t >actual.0abbrev &&
test_cmp actual.noabbrev actual.0abbrev &&
git branch -v --list --abbrev=36 t >actual.36abbrev &&
# how many hexdigits are used?
read name objdefault rest <actual.abbrev &&
read name obj36 rest <actual.36abbrev &&
objfull=$(git rev-parse --verify t) &&
# are we really getting abbreviations?
test "$obj36" != "$objdefault" &&
expr "$obj36" : "$objdefault" >/dev/null &&
test "$objfull" != "$obj36" &&
expr "$objfull" : "$obj36" >/dev/null
'
test_expect_success 'git branch --column' '
COLUMNS=81 git branch --column=column >actual &&
cat >expected <<\EOF &&
a/b/c bam foo l * master n o/p r
abc bar j/k m/m master2 o/o q
EOF
test_cmp expected actual
'
test_expect_success 'git branch --column with an extremely long branch name' '
long=this/is/a/part/of/long/branch/name &&
long=z$long/$long/$long/$long &&
test_when_finished "git branch -d $long" &&
git branch $long &&
COLUMNS=80 git branch --column=column >actual &&
cat >expected <<EOF &&
a/b/c
abc
bam
bar
foo
j/k
l
m/m
* master
master2
n
o/o
o/p
q
r
$long
EOF
test_cmp expected actual
'
test_expect_success 'git branch with column.*' '
git config column.ui column &&
git config column.branch "dense" &&
COLUMNS=80 git branch >actual &&
git config --unset column.branch &&
git config --unset column.ui &&
cat >expected <<\EOF &&
a/b/c bam foo l * master n o/p r
abc bar j/k m/m master2 o/o q
EOF
test_cmp expected actual
'
test_expect_success 'git branch --column -v should fail' '
test_must_fail git branch --column -v
'
test_expect_success 'git branch -v with column.ui ignored' '
git config column.ui column &&
COLUMNS=80 git branch -v | cut -c -10 | sed "s/ *$//" >actual &&
git config --unset column.ui &&
cat >expected <<\EOF &&
a/b/c
abc
bam
bar
foo
j/k
l
m/m
* master
master2
n
o/o
o/p
q
r
EOF
test_cmp expected actual
'
mv .git/config .git/config-saved
test_expect_success 'git branch -m q q2 without config should succeed' '
git branch -m q q2 &&
git branch -m q2 q
'
mv .git/config-saved .git/config
git config branch.s/s.dummy Hello
test_expect_success 'git branch -m s/s s should work when s/t is deleted' '
git branch -l s/s &&
git reflog exists refs/heads/s/s &&
git branch -l s/t &&
git reflog exists refs/heads/s/t &&
git branch -d s/t &&
git branch -m s/s s &&
git reflog exists refs/heads/s
'
test_expect_success 'config information was renamed, too' '
test $(git config branch.s.dummy) = Hello &&
test_must_fail git config branch.s/s.dummy
'
test_expect_success 'git branch -m correctly renames multiple config sections' '
test_when_finished "git checkout master" &&
git checkout -b source master &&
# Assert that a config file with multiple config sections has
# those sections preserved...
cat >expect <<-\EOF &&
branch.dest.key1=value1
some.gar.b=age
branch.dest.key2=value2
EOF
cat >config.branch <<\EOF &&
;; Note the lack of -\EOF above & mixed indenting here. This is
;; intentional, we are also testing that the formatting of copied
;; sections is preserved.
;; Comment for source. Tabs
[branch "source"]
;; Comment for the source value
key1 = value1
;; Comment for some.gar. Spaces
[some "gar"]
;; Comment for the some.gar value
b = age
;; Comment for source, again. Mixed tabs/spaces.
[branch "source"]
;; Comment for the source value, again
key2 = value2
EOF
cat config.branch >>.git/config &&
git branch -m source dest &&
git config -f .git/config -l | grep -F -e source -e dest -e some.gar >actual &&
test_cmp expect actual &&
# ...and that the comments for those sections are also
# preserved.
cat config.branch | sed "s/\"source\"/\"dest\"/" >expect &&
sed -n -e "/Note the lack/,\$p" .git/config >actual &&
test_cmp expect actual
'
test_expect_success 'git branch -c dumps usage' '
test_expect_code 128 git branch -c 2>err &&
test_i18ngrep "branch name required" err
'
test_expect_success 'git branch --copy dumps usage' '
test_expect_code 128 git branch --copy 2>err &&
test_i18ngrep "branch name required" err
'
test_expect_success 'git branch -c d e should work' '
git branch -l d &&
git reflog exists refs/heads/d &&
git config branch.d.dummy Hello &&
git branch -c d e &&
git reflog exists refs/heads/d &&
git reflog exists refs/heads/e &&
echo Hello >expect &&
git config branch.e.dummy >actual &&
test_cmp expect actual &&
echo Hello >expect &&
git config branch.d.dummy >actual &&
test_cmp expect actual
'
test_expect_success 'git branch --copy is a synonym for -c' '
git branch -l copy &&
git reflog exists refs/heads/copy &&
git config branch.copy.dummy Hello &&
git branch --copy copy copy-to &&
git reflog exists refs/heads/copy &&
git reflog exists refs/heads/copy-to &&
echo Hello >expect &&
git config branch.copy.dummy >actual &&
test_cmp expect actual &&
echo Hello >expect &&
git config branch.copy-to.dummy >actual &&
test_cmp expect actual
'
test_expect_success 'git branch -c ee ef should copy ee to create branch ef' '
git checkout -b ee &&
git reflog exists refs/heads/ee &&
git config branch.ee.dummy Hello &&
git branch -c ee ef &&
git reflog exists refs/heads/ee &&
git reflog exists refs/heads/ef &&
test $(git config branch.ee.dummy) = Hello &&
test $(git config branch.ef.dummy) = Hello &&
test $(git rev-parse --abbrev-ref HEAD) = ee
'
test_expect_success 'git branch -c f/f g/g should work' '
git branch -l f/f &&
git reflog exists refs/heads/f/f &&
git config branch.f/f.dummy Hello &&
git branch -c f/f g/g &&
git reflog exists refs/heads/f/f &&
git reflog exists refs/heads/g/g &&
test $(git config branch.f/f.dummy) = Hello &&
test $(git config branch.g/g.dummy) = Hello
'
test_expect_success 'git branch -c m2 m2 should work' '
git branch -l m2 &&
git reflog exists refs/heads/m2 &&
git config branch.m2.dummy Hello &&
git branch -c m2 m2 &&
git reflog exists refs/heads/m2 &&
test $(git config branch.m2.dummy) = Hello
'
test_expect_success 'git branch -c zz zz/zz should fail' '
git branch -l zz &&
git reflog exists refs/heads/zz &&
test_must_fail git branch -c zz zz/zz
'
test_expect_success 'git branch -c b/b b should fail' '
git branch -l b/b &&
test_must_fail git branch -c b/b b
'
test_expect_success 'git branch -C o/q o/p should work when o/p exists' '
git branch -l o/q &&
git reflog exists refs/heads/o/q &&
git reflog exists refs/heads/o/p &&
git branch -C o/q o/p
'
test_expect_success 'git branch -c -f o/q o/p should work when o/p exists' '
git reflog exists refs/heads/o/q &&
git reflog exists refs/heads/o/p &&
git branch -c -f o/q o/p
'
test_expect_success 'git branch -c qq rr/qq should fail when r exists' '
git branch qq &&
git branch rr &&
test_must_fail git branch -c qq rr/qq
'
test_expect_success 'git branch -C b1 b2 should fail when b2 is checked out' '
git branch b1 &&
git checkout -b b2 &&
test_must_fail git branch -C b1 b2
'
test_expect_success 'git branch -C c1 c2 should succeed when c1 is checked out' '
git checkout -b c1 &&
git branch c2 &&
git branch -C c1 c2 &&
test $(git rev-parse --abbrev-ref HEAD) = c1
'
test_expect_success 'git branch -C c1 c2 should never touch HEAD' '
msg="Branch: copied refs/heads/c1 to refs/heads/c2" &&
! grep "$msg$" .git/logs/HEAD
'
test_expect_success 'git branch -C master should work when master is checked out' '
git checkout master &&
git branch -C master
'
test_expect_success 'git branch -C master master should work when master is checked out' '
git checkout master &&
git branch -C master master
'
test_expect_success 'git branch -C master5 master5 should work when master is checked out' '
git checkout master &&
git branch master5 &&
git branch -C master5 master5
'
test_expect_success 'git branch -C ab cd should overwrite existing config for cd' '
git branch -l cd &&
git reflog exists refs/heads/cd &&
git config branch.cd.dummy CD &&
git branch -l ab &&
git reflog exists refs/heads/ab &&
git config branch.ab.dummy AB &&
git branch -C ab cd &&
git reflog exists refs/heads/ab &&
git reflog exists refs/heads/cd &&
test $(git config branch.ab.dummy) = AB &&
test $(git config branch.cd.dummy) = AB
'
test_expect_success 'git branch -c correctly copies multiple config sections' '
FOO=1 &&
export FOO &&
test_when_finished "git checkout master" &&
git checkout -b source2 master &&
# Assert that a config file with multiple config sections has
# those sections preserved...
cat >expect <<-\EOF &&
branch.source2.key1=value1
branch.dest2.key1=value1
more.gar.b=age
branch.source2.key2=value2
branch.dest2.key2=value2
EOF
cat >config.branch <<\EOF &&
;; Note the lack of -\EOF above & mixed indenting here. This is
;; intentional, we are also testing that the formatting of copied
;; sections is preserved.
;; Comment for source2. Tabs
[branch "source2"]
;; Comment for the source2 value
key1 = value1
;; Comment for more.gar. Spaces
[more "gar"]
;; Comment for the more.gar value
b = age
;; Comment for source2, again. Mixed tabs/spaces.
[branch "source2"]
;; Comment for the source2 value, again
key2 = value2
EOF
cat config.branch >>.git/config &&
git branch -c source2 dest2 &&
git config -f .git/config -l | grep -F -e source2 -e dest2 -e more.gar >actual &&
test_cmp expect actual &&
# ...and that the comments and formatting for those sections
# is also preserved.
cat >expect <<\EOF &&
;; Comment for source2. Tabs
[branch "source2"]
;; Comment for the source2 value
key1 = value1
;; Comment for more.gar. Spaces
[branch "dest2"]
;; Comment for the source2 value
key1 = value1
;; Comment for more.gar. Spaces
[more "gar"]
;; Comment for the more.gar value
b = age
;; Comment for source2, again. Mixed tabs/spaces.
[branch "source2"]
;; Comment for the source2 value, again
key2 = value2
[branch "dest2"]
;; Comment for the source2 value, again
key2 = value2
EOF
sed -n -e "/Comment for source2/,\$p" .git/config >actual &&
test_cmp expect actual
'
test_expect_success 'deleting a symref' '
git branch target &&
git symbolic-ref refs/heads/symref refs/heads/target &&
echo "Deleted branch symref (was refs/heads/target)." >expect &&
git branch -d symref >actual &&
test_path_is_file .git/refs/heads/target &&
test_path_is_missing .git/refs/heads/symref &&
test_i18ncmp expect actual
'
test_expect_success 'deleting a dangling symref' '
git symbolic-ref refs/heads/dangling-symref nowhere &&
test_path_is_file .git/refs/heads/dangling-symref &&
echo "Deleted branch dangling-symref (was nowhere)." >expect &&
git branch -d dangling-symref >actual &&
test_path_is_missing .git/refs/heads/dangling-symref &&
test_i18ncmp expect actual
'
test_expect_success 'deleting a self-referential symref' '
git symbolic-ref refs/heads/self-reference refs/heads/self-reference &&
test_path_is_file .git/refs/heads/self-reference &&
echo "Deleted branch self-reference (was refs/heads/self-reference)." >expect &&
git branch -d self-reference >actual &&
test_path_is_missing .git/refs/heads/self-reference &&
test_i18ncmp expect actual
'
test_expect_success 'renaming a symref is not allowed' '
git symbolic-ref refs/heads/master2 refs/heads/master &&
test_must_fail git branch -m master2 master3 &&
git symbolic-ref refs/heads/master2 &&
test_path_is_file .git/refs/heads/master &&
test_path_is_missing .git/refs/heads/master3
'
test_expect_success SYMLINKS 'git branch -m u v should fail when the reflog for u is a symlink' '
git branch -l u &&
mv .git/logs/refs/heads/u real-u &&
ln -s real-u .git/logs/refs/heads/u &&
test_must_fail git branch -m u v
'
test_expect_success 'test tracking setup via --track' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track my1 local/master &&
test $(git config branch.my1.remote) = local &&
test $(git config branch.my1.merge) = refs/heads/master
'
test_expect_success 'test tracking setup (non-wildcard, matching)' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/master:refs/remotes/local/master &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track my4 local/master &&
test $(git config branch.my4.remote) = local &&
test $(git config branch.my4.merge) = refs/heads/master
'
test_expect_success 'tracking setup fails on non-matching refspec' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git config remote.local.fetch refs/heads/s:refs/remotes/local/s &&
test_must_fail git branch --track my5 local/master &&
test_must_fail git config branch.my5.remote &&
test_must_fail git config branch.my5.merge
'
test_expect_success 'test tracking setup via config' '
git config branch.autosetupmerge true &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch my3 local/master &&
test $(git config branch.my3.remote) = local &&
test $(git config branch.my3.merge) = refs/heads/master
'
test_expect_success 'test overriding tracking setup via --no-track' '
git config branch.autosetupmerge true &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track my2 local/master &&
git config branch.autosetupmerge false &&
! test "$(git config branch.my2.remote)" = local &&
! test "$(git config branch.my2.merge)" = refs/heads/master
'
test_expect_success 'no tracking without .fetch entries' '
git config branch.autosetupmerge true &&
git branch my6 s &&
git config branch.autosetupmerge false &&
test -z "$(git config branch.my6.remote)" &&
test -z "$(git config branch.my6.merge)"
'
test_expect_success 'test tracking setup via --track but deeper' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/o/o || git fetch local) &&
git branch --track my7 local/o/o &&
test "$(git config branch.my7.remote)" = local &&
test "$(git config branch.my7.merge)" = refs/heads/o/o
'
test_expect_success 'test deleting branch deletes branch config' '
git branch -d my7 &&
test -z "$(git config branch.my7.remote)" &&
test -z "$(git config branch.my7.merge)"
'
test_expect_success 'test deleting branch without config' '
git branch my7 s &&
sha1=$(git rev-parse my7 | cut -c 1-7) &&
echo "Deleted branch my7 (was $sha1)." >expect &&
git branch -d my7 >actual 2>&1 &&
test_i18ncmp expect actual
'
test_expect_success 'deleting currently checked out branch fails' '
git worktree add -b my7 my7 &&
test_must_fail git -C my7 branch -d my7 &&
test_must_fail git branch -d my7
'
test_expect_success 'test --track without .fetch entries' '
git branch --track my8 &&
test "$(git config branch.my8.remote)" &&
test "$(git config branch.my8.merge)"
'
test_expect_success 'branch from non-branch HEAD w/autosetupmerge=always' '
git config branch.autosetupmerge always &&
git branch my9 HEAD^ &&
git config branch.autosetupmerge false
'
test_expect_success 'branch from non-branch HEAD w/--track causes failure' '
test_must_fail git branch --track my10 HEAD^
'
test_expect_success 'branch from tag w/--track causes failure' '
git tag foobar &&
test_must_fail git branch --track my11 foobar
'
test_expect_success '--set-upstream-to fails on multiple branches' '
test_must_fail git branch --set-upstream-to master a b c
'
test_expect_success '--set-upstream-to fails on detached HEAD' '
git checkout HEAD^{} &&
test_must_fail git branch --set-upstream-to master &&
git checkout -
'
test_expect_success '--set-upstream-to fails on a missing dst branch' '
test_must_fail git branch --set-upstream-to master does-not-exist
'
test_expect_success '--set-upstream-to fails on a missing src branch' '
test_must_fail git branch --set-upstream-to does-not-exist master
'
test_expect_success '--set-upstream-to fails on a non-ref' '
test_must_fail git branch --set-upstream-to HEAD^{}
'
test_expect_success '--set-upstream-to fails on locked config' '
test_when_finished "rm -f .git/config.lock" &&
>.git/config.lock &&
git branch locked &&
test_must_fail git branch --set-upstream-to locked
'
test_expect_success 'use --set-upstream-to modify HEAD' '
test_config branch.master.remote foo &&
test_config branch.master.merge foo &&
git branch my12 &&
git branch --set-upstream-to my12 &&
test "$(git config branch.master.remote)" = "." &&
test "$(git config branch.master.merge)" = "refs/heads/my12"
'
test_expect_success 'use --set-upstream-to modify a particular branch' '
git branch my13 &&
git branch --set-upstream-to master my13 &&
test_when_finished "git branch --unset-upstream my13" &&
test "$(git config branch.my13.remote)" = "." &&
test "$(git config branch.my13.merge)" = "refs/heads/master"
'
test_expect_success '--unset-upstream should fail if given a non-existent branch' '
test_must_fail git branch --unset-upstream i-dont-exist
'
test_expect_success '--unset-upstream should fail if config is locked' '
test_when_finished "rm -f .git/config.lock" &&
git branch --set-upstream-to locked &&
>.git/config.lock &&
test_must_fail git branch --unset-upstream
'
test_expect_success 'test --unset-upstream on HEAD' '
git branch my14 &&
test_config branch.master.remote foo &&
test_config branch.master.merge foo &&
git branch --set-upstream-to my14 &&
git branch --unset-upstream &&
test_must_fail git config branch.master.remote &&
test_must_fail git config branch.master.merge &&
# fail for a branch without upstream set
test_must_fail git branch --unset-upstream
'
test_expect_success '--unset-upstream should fail on multiple branches' '
test_must_fail git branch --unset-upstream a b c
'
test_expect_success '--unset-upstream should fail on detached HEAD' '
git checkout HEAD^{} &&
test_must_fail git branch --unset-upstream &&
git checkout -
'
test_expect_success 'test --unset-upstream on a particular branch' '
git branch my15 &&
git branch --set-upstream-to master my14 &&
git branch --unset-upstream my14 &&
test_must_fail git config branch.my14.remote &&
test_must_fail git config branch.my14.merge
'
test_expect_success '--set-upstream fails' '
test_must_fail git branch --set-upstream origin/master
'
test_expect_success '--set-upstream-to notices an error to set branch as own upstream' '
git branch --set-upstream-to refs/heads/my13 my13 2>actual &&
cat >expected <<-\EOF &&
warning: Not setting branch my13 as its own upstream.
EOF
test_expect_code 1 git config branch.my13.remote &&
test_expect_code 1 git config branch.my13.merge &&
test_i18ncmp expected actual
'
# Keep this test last, as it changes the current branch
cat >expect <<EOF
$_z40 $HEAD $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000 branch: Created from master
EOF
test_expect_success 'git checkout -b g/h/i -l should create a branch and a log' '
GIT_COMMITTER_DATE="2005-05-26 23:30" \
git checkout -b g/h/i -l master &&
test_path_is_file .git/refs/heads/g/h/i &&
test_path_is_file .git/logs/refs/heads/g/h/i &&
test_cmp expect .git/logs/refs/heads/g/h/i
'
test_expect_success 'checkout -b makes reflog by default' '
git checkout master &&
git config --unset core.logAllRefUpdates &&
git checkout -b alpha &&
git rev-parse --verify alpha@{0}
'
test_expect_success 'checkout -b does not make reflog when core.logAllRefUpdates = false' '
git checkout master &&
git config core.logAllRefUpdates false &&
git checkout -b beta &&
test_must_fail git rev-parse --verify beta@{0}
'
test_expect_success 'checkout -b with -l makes reflog when core.logAllRefUpdates = false' '
git checkout master &&
git checkout -lb gamma &&
git config --unset core.logAllRefUpdates &&
git rev-parse --verify gamma@{0}
'
test_expect_success 'avoid ambiguous track' '
git config branch.autosetupmerge true &&
git config remote.ambi1.url lalala &&
git config remote.ambi1.fetch refs/heads/lalala:refs/heads/master &&
git config remote.ambi2.url lilili &&
git config remote.ambi2.fetch refs/heads/lilili:refs/heads/master &&
test_must_fail git branch all1 master &&
test -z "$(git config branch.all1.merge)"
'
test_expect_success 'autosetuprebase local on a tracked local branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase local &&
(git show-ref -q refs/remotes/local/o || git fetch local) &&
git branch mybase &&
git branch --track myr1 mybase &&
test "$(git config branch.myr1.remote)" = . &&
test "$(git config branch.myr1.merge)" = refs/heads/mybase &&
test "$(git config branch.myr1.rebase)" = true
'
test_expect_success 'autosetuprebase always on a tracked local branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase always &&
(git show-ref -q refs/remotes/local/o || git fetch local) &&
git branch mybase2 &&
git branch --track myr2 mybase &&
test "$(git config branch.myr2.remote)" = . &&
test "$(git config branch.myr2.merge)" = refs/heads/mybase &&
test "$(git config branch.myr2.rebase)" = true
'
test_expect_success 'autosetuprebase remote on a tracked local branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase remote &&
(git show-ref -q refs/remotes/local/o || git fetch local) &&
git branch mybase3 &&
git branch --track myr3 mybase2 &&
test "$(git config branch.myr3.remote)" = . &&
test "$(git config branch.myr3.merge)" = refs/heads/mybase2 &&
! test "$(git config branch.myr3.rebase)" = true
'
test_expect_success 'autosetuprebase never on a tracked local branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase never &&
(git show-ref -q refs/remotes/local/o || git fetch local) &&
git branch mybase4 &&
git branch --track myr4 mybase2 &&
test "$(git config branch.myr4.remote)" = . &&
test "$(git config branch.myr4.merge)" = refs/heads/mybase2 &&
! test "$(git config branch.myr4.rebase)" = true
'
test_expect_success 'autosetuprebase local on a tracked remote branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase local &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track myr5 local/master &&
test "$(git config branch.myr5.remote)" = local &&
test "$(git config branch.myr5.merge)" = refs/heads/master &&
! test "$(git config branch.myr5.rebase)" = true
'
test_expect_success 'autosetuprebase never on a tracked remote branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase never &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track myr6 local/master &&
test "$(git config branch.myr6.remote)" = local &&
test "$(git config branch.myr6.merge)" = refs/heads/master &&
! test "$(git config branch.myr6.rebase)" = true
'
test_expect_success 'autosetuprebase remote on a tracked remote branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase remote &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track myr7 local/master &&
test "$(git config branch.myr7.remote)" = local &&
test "$(git config branch.myr7.merge)" = refs/heads/master &&
test "$(git config branch.myr7.rebase)" = true
'
test_expect_success 'autosetuprebase always on a tracked remote branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
git config branch.autosetuprebase remote &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track myr8 local/master &&
test "$(git config branch.myr8.remote)" = local &&
test "$(git config branch.myr8.merge)" = refs/heads/master &&
test "$(git config branch.myr8.rebase)" = true
'
test_expect_success 'autosetuprebase unconfigured on a tracked remote branch' '
git config --unset branch.autosetuprebase &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --track myr9 local/master &&
test "$(git config branch.myr9.remote)" = local &&
test "$(git config branch.myr9.merge)" = refs/heads/master &&
test "z$(git config branch.myr9.rebase)" = z
'
test_expect_success 'autosetuprebase unconfigured on a tracked local branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/o || git fetch local) &&
git branch mybase10 &&
git branch --track myr10 mybase2 &&
test "$(git config branch.myr10.remote)" = . &&
test "$(git config branch.myr10.merge)" = refs/heads/mybase2 &&
test "z$(git config branch.myr10.rebase)" = z
'
test_expect_success 'autosetuprebase unconfigured on untracked local branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr11 mybase2 &&
test "z$(git config branch.myr11.remote)" = z &&
test "z$(git config branch.myr11.merge)" = z &&
test "z$(git config branch.myr11.rebase)" = z
'
test_expect_success 'autosetuprebase unconfigured on untracked remote branch' '
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr12 local/master &&
test "z$(git config branch.myr12.remote)" = z &&
test "z$(git config branch.myr12.merge)" = z &&
test "z$(git config branch.myr12.rebase)" = z
'
test_expect_success 'autosetuprebase never on an untracked local branch' '
git config branch.autosetuprebase never &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr13 mybase2 &&
test "z$(git config branch.myr13.remote)" = z &&
test "z$(git config branch.myr13.merge)" = z &&
test "z$(git config branch.myr13.rebase)" = z
'
test_expect_success 'autosetuprebase local on an untracked local branch' '
git config branch.autosetuprebase local &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr14 mybase2 &&
test "z$(git config branch.myr14.remote)" = z &&
test "z$(git config branch.myr14.merge)" = z &&
test "z$(git config branch.myr14.rebase)" = z
'
test_expect_success 'autosetuprebase remote on an untracked local branch' '
git config branch.autosetuprebase remote &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr15 mybase2 &&
test "z$(git config branch.myr15.remote)" = z &&
test "z$(git config branch.myr15.merge)" = z &&
test "z$(git config branch.myr15.rebase)" = z
'
test_expect_success 'autosetuprebase always on an untracked local branch' '
git config branch.autosetuprebase always &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr16 mybase2 &&
test "z$(git config branch.myr16.remote)" = z &&
test "z$(git config branch.myr16.merge)" = z &&
test "z$(git config branch.myr16.rebase)" = z
'
test_expect_success 'autosetuprebase never on an untracked remote branch' '
git config branch.autosetuprebase never &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr17 local/master &&
test "z$(git config branch.myr17.remote)" = z &&
test "z$(git config branch.myr17.merge)" = z &&
test "z$(git config branch.myr17.rebase)" = z
'
test_expect_success 'autosetuprebase local on an untracked remote branch' '
git config branch.autosetuprebase local &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr18 local/master &&
test "z$(git config branch.myr18.remote)" = z &&
test "z$(git config branch.myr18.merge)" = z &&
test "z$(git config branch.myr18.rebase)" = z
'
test_expect_success 'autosetuprebase remote on an untracked remote branch' '
git config branch.autosetuprebase remote &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr19 local/master &&
test "z$(git config branch.myr19.remote)" = z &&
test "z$(git config branch.myr19.merge)" = z &&
test "z$(git config branch.myr19.rebase)" = z
'
test_expect_success 'autosetuprebase always on an untracked remote branch' '
git config branch.autosetuprebase always &&
git config remote.local.url . &&
git config remote.local.fetch refs/heads/*:refs/remotes/local/* &&
(git show-ref -q refs/remotes/local/master || git fetch local) &&
git branch --no-track myr20 local/master &&
test "z$(git config branch.myr20.remote)" = z &&
test "z$(git config branch.myr20.merge)" = z &&
test "z$(git config branch.myr20.rebase)" = z
'
test_expect_success 'autosetuprebase always on detached HEAD' '
git config branch.autosetupmerge always &&
test_when_finished git checkout master &&
git checkout HEAD^0 &&
git branch my11 &&
test -z "$(git config branch.my11.remote)" &&
test -z "$(git config branch.my11.merge)"
'
test_expect_success 'detect misconfigured autosetuprebase (bad value)' '
git config branch.autosetuprebase garbage &&
test_must_fail git branch
'
test_expect_success 'detect misconfigured autosetuprebase (no value)' '
git config --unset branch.autosetuprebase &&
echo "[branch] autosetuprebase" >>.git/config &&
test_must_fail git branch &&
git config --unset branch.autosetuprebase
'
test_expect_success 'attempt to delete a branch without base and unmerged to HEAD' '
git checkout my9 &&
git config --unset branch.my8.merge &&
test_must_fail git branch -d my8
'
test_expect_success 'attempt to delete a branch merged to its base' '
# we are on my9 which is the initial commit; traditionally
# we would not have allowed deleting my8 that is not merged
# to my9, but it is set to track master that already has my8
git config branch.my8.merge refs/heads/master &&
git branch -d my8
'
test_expect_success 'attempt to delete a branch merged to its base' '
git checkout master &&
echo Third >>A &&
git commit -m "Third commit" A &&
git branch -t my10 my9 &&
git branch -f my10 HEAD^ &&
# we are on master which is at the third commit, and my10
# is behind us, so traditionally we would have allowed deleting
# it; but my10 is set to track my9 that is further behind.
test_must_fail git branch -d my10
'
test_expect_success 'use --edit-description' '
write_script editor <<-\EOF &&
echo "New contents" >"$1"
EOF
EDITOR=./editor git branch --edit-description &&
write_script editor <<-\EOF &&
git stripspace -s <"$1" >"EDITOR_OUTPUT"
EOF
EDITOR=./editor git branch --edit-description &&
echo "New contents" >expect &&
test_cmp EDITOR_OUTPUT expect
'
test_expect_success 'detect typo in branch name when using --edit-description' '
write_script editor <<-\EOF &&
echo "New contents" >"$1"
EOF
test_must_fail env EDITOR=./editor git branch --edit-description no-such-branch
'
test_expect_success 'refuse --edit-description on unborn branch for now' '
write_script editor <<-\EOF &&
echo "New contents" >"$1"
EOF
git checkout --orphan unborn &&
test_must_fail env EDITOR=./editor git branch --edit-description
'
test_expect_success '--merged catches invalid object names' '
test_must_fail git branch --merged 0000000000000000000000000000000000000000
'
test_expect_success '--merged is incompatible with --no-merged' '
test_must_fail git branch --merged HEAD --no-merged HEAD
'
test_expect_success 'tracking with unexpected .fetch refspec' '
rm -rf a b c d &&
git init a &&
(
cd a &&
test_commit a
) &&
git init b &&
(
cd b &&
test_commit b
) &&
git init c &&
(
cd c &&
test_commit c &&
git remote add a ../a &&
git remote add b ../b &&
git fetch --all
) &&
git init d &&
(
cd d &&
git remote add c ../c &&
git config remote.c.fetch "+refs/remotes/*:refs/remotes/*" &&
git fetch c &&
git branch --track local/a/master remotes/a/master &&
test "$(git config branch.local/a/master.remote)" = "c" &&
test "$(git config branch.local/a/master.merge)" = "refs/remotes/a/master" &&
git rev-parse --verify a >expect &&
git rev-parse --verify local/a/master >actual &&
test_cmp expect actual
)
'
test_done