git-commit-vandalism/t/t2027-worktree-list.sh

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#!/bin/sh
test_description='test git worktree list'
. ./test-lib.sh
test_expect_success 'setup' '
test_commit init
'
rev-parse: fix several options when running in a subdirectory In addition to making git_path() aware of certain file names that need to be handled differently e.g. when running in worktrees, the commit 557bd833bb (git_path(): be aware of file relocation in $GIT_DIR, 2014-11-30) also snuck in a new option for `git rev-parse`: `--git-path`. On the face of it, there is no obvious bug in that commit's diff: it faithfully calls git_path() on the argument and prints it out, i.e. `git rev-parse --git-path <filename>` has the same precise behavior as calling `git_path("<filename>")` in C. The problem lies deeper, much deeper. In hindsight (which is always unfair), implementing the .git/ directory discovery in `setup_git_directory()` by changing the working directory may have allowed us to avoid passing around a struct that contains information about the current repository, but it bought us many, many problems. In this case, when being called in a subdirectory, `git rev-parse` changes the working directory to the top-level directory before calling `git_path()`. In the new working directory, the result is correct. But in the working directory of the calling script, it is incorrect. Example: when calling `git rev-parse --git-path HEAD` in, say, the Documentation/ subdirectory of Git's own source code, the string `.git/HEAD` is printed. Side note: that bug is hidden when running in a subdirectory of a worktree that was added by the `git worktree` command: in that case, the (correct) absolute path of the `HEAD` file is printed. In the interest of time, this patch does not go the "correct" route to introduce a struct with repository information (and removing global state in the process), instead this patch chooses to detect when the command was called in a subdirectory and forces the result to be an absolute path. While at it, we are also fixing the output of --git-common-dir and --shared-index-path. Lastly, please note that we reuse the same strbuf for all of the relative_path() calls; this avoids frequent allocation (and duplicated code), and it does not risk memory leaks, for two reasons: 1) the cmd_rev_parse() function does not return anywhere between the use of the new strbuf instance and its final release, and 2) git-rev-parse is one of these "one-shot" programs in Git, i.e. it exits after running for a very short time, meaning that all allocated memory is released with the exit() call anyway. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-17 17:59:06 +01:00
test_expect_success 'rev-parse --git-common-dir on main worktree' '
git rev-parse --git-common-dir >actual &&
echo .git >expected &&
test_cmp expected actual &&
mkdir sub &&
git -C sub rev-parse --git-common-dir >actual2 &&
echo ../.git >expected2 &&
test_cmp expected2 actual2
'
rev-parse: fix several options when running in a subdirectory In addition to making git_path() aware of certain file names that need to be handled differently e.g. when running in worktrees, the commit 557bd833bb (git_path(): be aware of file relocation in $GIT_DIR, 2014-11-30) also snuck in a new option for `git rev-parse`: `--git-path`. On the face of it, there is no obvious bug in that commit's diff: it faithfully calls git_path() on the argument and prints it out, i.e. `git rev-parse --git-path <filename>` has the same precise behavior as calling `git_path("<filename>")` in C. The problem lies deeper, much deeper. In hindsight (which is always unfair), implementing the .git/ directory discovery in `setup_git_directory()` by changing the working directory may have allowed us to avoid passing around a struct that contains information about the current repository, but it bought us many, many problems. In this case, when being called in a subdirectory, `git rev-parse` changes the working directory to the top-level directory before calling `git_path()`. In the new working directory, the result is correct. But in the working directory of the calling script, it is incorrect. Example: when calling `git rev-parse --git-path HEAD` in, say, the Documentation/ subdirectory of Git's own source code, the string `.git/HEAD` is printed. Side note: that bug is hidden when running in a subdirectory of a worktree that was added by the `git worktree` command: in that case, the (correct) absolute path of the `HEAD` file is printed. In the interest of time, this patch does not go the "correct" route to introduce a struct with repository information (and removing global state in the process), instead this patch chooses to detect when the command was called in a subdirectory and forces the result to be an absolute path. While at it, we are also fixing the output of --git-common-dir and --shared-index-path. Lastly, please note that we reuse the same strbuf for all of the relative_path() calls; this avoids frequent allocation (and duplicated code), and it does not risk memory leaks, for two reasons: 1) the cmd_rev_parse() function does not return anywhere between the use of the new strbuf instance and its final release, and 2) git-rev-parse is one of these "one-shot" programs in Git, i.e. it exits after running for a very short time, meaning that all allocated memory is released with the exit() call anyway. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-17 17:59:06 +01:00
test_expect_success 'rev-parse --git-path objects linked worktree' '
echo "$(git rev-parse --show-toplevel)/.git/objects" >expect &&
test_when_finished "rm -rf linked-tree actual expect && git worktree prune" &&
git worktree add --detach linked-tree master &&
git -C linked-tree rev-parse --git-path objects >actual &&
test_cmp expect actual
'
test_expect_success '"list" all worktrees from main' '
echo "$(git rev-parse --show-toplevel) $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
test_when_finished "rm -rf here out actual expect && git worktree prune" &&
git worktree add --detach here master &&
echo "$(git -C here rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
git worktree list >out &&
sed "s/ */ /g" <out >actual &&
test_cmp expect actual
'
test_expect_success '"list" all worktrees from linked' '
echo "$(git rev-parse --show-toplevel) $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
test_when_finished "rm -rf here out actual expect && git worktree prune" &&
git worktree add --detach here master &&
echo "$(git -C here rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
git -C here worktree list >out &&
sed "s/ */ /g" <out >actual &&
test_cmp expect actual
'
test_expect_success '"list" all worktrees --porcelain' '
echo "worktree $(git rev-parse --show-toplevel)" >expect &&
echo "HEAD $(git rev-parse HEAD)" >>expect &&
echo "branch $(git symbolic-ref HEAD)" >>expect &&
echo >>expect &&
test_when_finished "rm -rf here actual expect && git worktree prune" &&
git worktree add --detach here master &&
echo "worktree $(git -C here rev-parse --show-toplevel)" >>expect &&
echo "HEAD $(git rev-parse HEAD)" >>expect &&
echo "detached" >>expect &&
echo >>expect &&
git worktree list --porcelain >actual &&
test_cmp expect actual
'
test_expect_success 'bare repo setup' '
git init --bare bare1 &&
echo "data" >file1 &&
git add file1 &&
git commit -m"File1: add data" &&
git push bare1 master &&
git reset --hard HEAD^
'
test_expect_success '"list" all worktrees from bare main' '
test_when_finished "rm -rf there out actual expect && git -C bare1 worktree prune" &&
git -C bare1 worktree add --detach ../there master &&
echo "$(pwd)/bare1 (bare)" >expect &&
echo "$(git -C there rev-parse --show-toplevel) $(git -C there rev-parse --short HEAD) (detached HEAD)" >>expect &&
git -C bare1 worktree list >out &&
sed "s/ */ /g" <out >actual &&
test_cmp expect actual
'
test_expect_success '"list" all worktrees --porcelain from bare main' '
test_when_finished "rm -rf there actual expect && git -C bare1 worktree prune" &&
git -C bare1 worktree add --detach ../there master &&
echo "worktree $(pwd)/bare1" >expect &&
echo "bare" >>expect &&
echo >>expect &&
echo "worktree $(git -C there rev-parse --show-toplevel)" >>expect &&
echo "HEAD $(git -C there rev-parse HEAD)" >>expect &&
echo "detached" >>expect &&
echo >>expect &&
git -C bare1 worktree list --porcelain >actual &&
test_cmp expect actual
'
test_expect_success '"list" all worktrees from linked with a bare main' '
test_when_finished "rm -rf there out actual expect && git -C bare1 worktree prune" &&
git -C bare1 worktree add --detach ../there master &&
echo "$(pwd)/bare1 (bare)" >expect &&
echo "$(git -C there rev-parse --show-toplevel) $(git -C there rev-parse --short HEAD) (detached HEAD)" >>expect &&
git -C there worktree list >out &&
sed "s/ */ /g" <out >actual &&
test_cmp expect actual
'
test_expect_success 'bare repo cleanup' '
rm -rf bare1
'
test_expect_success 'broken main worktree still at the top' '
git init broken-main &&
(
cd broken-main &&
test_commit new &&
git worktree add linked &&
cat >expected <<-EOF &&
worktree $(pwd)
HEAD $ZERO_OID
EOF
cd linked &&
echo "worktree $(pwd)" >expected &&
echo "ref: .broken" >../.git/HEAD &&
git worktree list --porcelain >out &&
head -n 3 out >actual &&
test_cmp ../expected actual &&
git worktree list >out &&
head -n 1 out >actual.2 &&
grep -F "(error)" actual.2
)
'
test_expect_success 'linked worktrees are sorted' '
mkdir sorted &&
git init sorted/main &&
(
cd sorted/main &&
test_tick &&
test_commit new &&
git worktree add ../first &&
git worktree add ../second &&
git worktree list --porcelain >out &&
grep ^worktree out >actual
) &&
cat >expected <<-EOF &&
worktree $(pwd)/sorted/main
worktree $(pwd)/sorted/first
worktree $(pwd)/sorted/second
EOF
test_cmp expected sorted/main/actual
'
test_done