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#!/bin/sh

test_description='test separate work tree'
. ./test-lib.sh

test_expect_success 'setup' '
EMPTY_TREE=$(git write-tree) &&
EMPTY_BLOB=$(git hash-object -t blob --stdin </dev/null) &&
CHANGED_BLOB=$(echo changed | git hash-object -t blob --stdin) &&
EMPTY_BLOB7=$(echo $EMPTY_BLOB | sed "s/\(.......\).*/\1/") &&
CHANGED_BLOB7=$(echo $CHANGED_BLOB | sed "s/\(.......\).*/\1/") &&

mkdir -p work/sub/dir &&
mkdir -p work2 &&
mv .git repo.git
'

test_expect_success 'setup: helper for testing rev-parse' '
test_rev_parse() {
echo $1 >expected.bare &&
echo $2 >expected.inside-git &&
echo $3 >expected.inside-worktree &&
if test $# -ge 4
then
echo $4 >expected.prefix
fi &&

git rev-parse --is-bare-repository >actual.bare &&
git rev-parse --is-inside-git-dir >actual.inside-git &&
git rev-parse --is-inside-work-tree >actual.inside-worktree &&
if test $# -ge 4
then
git rev-parse --show-prefix >actual.prefix
fi &&

test_cmp expected.bare actual.bare &&
test_cmp expected.inside-git actual.inside-git &&
test_cmp expected.inside-worktree actual.inside-worktree &&
if test $# -ge 4
then
# rev-parse --show-prefix should output
# a single newline when at the top of the work tree,
# but we test for that separately.
test -z "$4" && ! test -s actual.prefix ||
test_cmp expected.prefix actual.prefix
fi
}
'

test_expect_success 'setup: core.worktree = relative path' '
sane_unset GIT_WORK_TREE &&
GIT_DIR=repo.git &&
GIT_CONFIG="$(pwd)"/$GIT_DIR/config &&
export GIT_DIR GIT_CONFIG &&
git config core.worktree ../work
'

test_expect_success 'outside' '
test_rev_parse false false false
'

test_expect_success 'inside work tree' '
(
cd work &&
GIT_DIR=../repo.git &&
GIT_CONFIG="$(pwd)"/$GIT_DIR/config &&
test_rev_parse false false true ""
)
'

test_expect_success 'empty prefix is actually written out' '
echo >expected &&
(
cd work &&
GIT_DIR=../repo.git &&
GIT_CONFIG="$(pwd)"/$GIT_DIR/config &&
git rev-parse --show-prefix >../actual
) &&
test_cmp expected actual
'

test_expect_success 'subdir of work tree' '
(
cd work/sub/dir &&
GIT_DIR=../../../repo.git &&
GIT_CONFIG="$(pwd)"/$GIT_DIR/config &&
test_rev_parse false false true sub/dir/
)
'

test_expect_success 'setup: core.worktree = absolute path' '
sane_unset GIT_WORK_TREE &&
GIT_DIR=$(pwd)/repo.git &&
GIT_CONFIG=$GIT_DIR/config &&
export GIT_DIR GIT_CONFIG &&
git config core.worktree "$(pwd)/work"
'

test_expect_success 'outside' '
test_rev_parse false false false &&
(
cd work2 &&
test_rev_parse false false false
)
'

test_expect_success 'inside work tree' '
(
cd work &&
test_rev_parse false false true ""
)
'

test_expect_success 'subdir of work tree' '
(
cd work/sub/dir &&
test_rev_parse false false true sub/dir/
)
'

test_expect_success 'setup: GIT_WORK_TREE=relative (override core.worktree)' '
GIT_DIR=$(pwd)/repo.git &&
GIT_CONFIG=$GIT_DIR/config &&
git config core.worktree non-existent &&
GIT_WORK_TREE=work &&
export GIT_DIR GIT_CONFIG GIT_WORK_TREE
'

test_expect_success 'outside' '
test_rev_parse false false false &&
(
cd work2 &&
test_rev_parse false false false
)
'

test_expect_success 'inside work tree' '
(
cd work &&
GIT_WORK_TREE=. &&
test_rev_parse false false true ""
)
'

test_expect_success 'subdir of work tree' '
(
cd work/sub/dir &&
GIT_WORK_TREE=../.. &&
test_rev_parse false false true sub/dir/
)
'

test_expect_success 'setup: GIT_WORK_TREE=absolute, below git dir' '
mv work repo.git/work &&
mv work2 repo.git/work2 &&
GIT_DIR=$(pwd)/repo.git &&
GIT_CONFIG=$GIT_DIR/config &&
GIT_WORK_TREE=$(pwd)/repo.git/work &&
export GIT_DIR GIT_CONFIG GIT_WORK_TREE
'

test_expect_success 'outside' '
echo outside &&
test_rev_parse false false false
'

test_expect_success 'in repo.git' '
(
cd repo.git &&
test_rev_parse false true false
) &&
(
cd repo.git/objects &&
test_rev_parse false true false
) &&
(
cd repo.git/work2 &&
test_rev_parse false true false
)
'

test_expect_success 'inside work tree' '
(
cd repo.git/work &&
test_rev_parse false true true ""
)
'

test_expect_success 'subdir of work tree' '
(
cd repo.git/work/sub/dir &&
test_rev_parse false true true sub/dir/
)
'

test_expect_success 'find work tree from repo' '
echo sub/dir/untracked >expected &&
cat <<-\EOF >repo.git/work/.gitignore &&
expected.*
actual.*
.gitignore
EOF
>repo.git/work/sub/dir/untracked &&
(
cd repo.git &&
git ls-files --others --exclude-standard >../actual
) &&
test_cmp expected actual
'

test_expect_success 'find work tree from work tree' '
echo sub/dir/tracked >expected &&
>repo.git/work/sub/dir/tracked &&
(
cd repo.git/work/sub/dir &&
git --git-dir=../../.. add tracked
) &&
(
cd repo.git &&
git ls-files >../actual
) &&
test_cmp expected actual
'

test_expect_success '_gently() groks relative GIT_DIR & GIT_WORK_TREE' '
(
cd repo.git/work/sub/dir &&
GIT_DIR=../../.. &&
GIT_WORK_TREE=../.. &&
GIT_PAGER= &&
export GIT_DIR GIT_WORK_TREE GIT_PAGER &&

git diff --exit-code tracked &&
echo changed >tracked &&
test_must_fail git diff --exit-code tracked
)
'

test_expect_success 'diff-index respects work tree under .git dir' '
cat >diff-index-cached.expected <<-EOF &&
:000000 100644 $_z40 $EMPTY_BLOB A sub/dir/tracked
EOF
cat >diff-index.expected <<-EOF &&
:000000 100644 $_z40 $_z40 A sub/dir/tracked
EOF

(
GIT_DIR=repo.git &&
GIT_WORK_TREE=repo.git/work &&
export GIT_DIR GIT_WORK_TREE &&
git diff-index $EMPTY_TREE >diff-index.actual &&
git diff-index --cached $EMPTY_TREE >diff-index-cached.actual
) &&
test_cmp diff-index.expected diff-index.actual &&
test_cmp diff-index-cached.expected diff-index-cached.actual
'

test_expect_success 'diff-files respects work tree under .git dir' '
cat >diff-files.expected <<-EOF &&
:100644 100644 $EMPTY_BLOB $_z40 M sub/dir/tracked
EOF

(
GIT_DIR=repo.git &&
GIT_WORK_TREE=repo.git/work &&
export GIT_DIR GIT_WORK_TREE &&
git diff-files >diff-files.actual
) &&
test_cmp diff-files.expected diff-files.actual
'

test_expect_success 'git diff respects work tree under .git dir' '
cat >diff-TREE.expected <<-EOF &&
diff --git a/sub/dir/tracked b/sub/dir/tracked
new file mode 100644
index 0000000..$CHANGED_BLOB7
--- /dev/null
+++ b/sub/dir/tracked
@@ -0,0 +1 @@
+changed
EOF
cat >diff-TREE-cached.expected <<-EOF &&
diff --git a/sub/dir/tracked b/sub/dir/tracked
new file mode 100644
index 0000000..$EMPTY_BLOB7
EOF
cat >diff-FILES.expected <<-EOF &&
diff --git a/sub/dir/tracked b/sub/dir/tracked
index $EMPTY_BLOB7..$CHANGED_BLOB7 100644
--- a/sub/dir/tracked
+++ b/sub/dir/tracked
@@ -0,0 +1 @@
+changed
EOF

(
GIT_DIR=repo.git &&
GIT_WORK_TREE=repo.git/work &&
export GIT_DIR GIT_WORK_TREE &&
git diff $EMPTY_TREE >diff-TREE.actual &&
git diff --cached $EMPTY_TREE >diff-TREE-cached.actual &&
git diff >diff-FILES.actual
) &&
test_cmp diff-TREE.expected diff-TREE.actual &&
test_cmp diff-TREE-cached.expected diff-TREE-cached.actual &&
test_cmp diff-FILES.expected diff-FILES.actual
'

test_expect_success 'git grep' '
echo dir/tracked >expected.grep &&
(
cd repo.git/work/sub &&
GIT_DIR=../.. &&
GIT_WORK_TREE=.. &&
export GIT_DIR GIT_WORK_TREE &&
git grep -l changed >../../../actual.grep
) &&
test_cmp expected.grep actual.grep
'

test_expect_success 'git commit' '
(
cd repo.git &&
GIT_DIR=. GIT_WORK_TREE=work git commit -a -m done
)
'

test_expect_success 'absolute pathspec should fail gracefully' '
(
cd repo.git &&
test_might_fail git config --unset core.worktree &&
test_must_fail git log HEAD -- /home
)
'

test_expect_success 'make_relative_path handles double slashes in GIT_DIR' '
>dummy_file &&
echo git --git-dir="$(pwd)//repo.git" --work-tree="$(pwd)" add dummy_file &&
git --git-dir="$(pwd)//repo.git" --work-tree="$(pwd)" add dummy_file
'

test_expect_success 'relative $GIT_WORK_TREE and git subprocesses' '
GIT_DIR=repo.git GIT_WORK_TREE=repo.git/work \
test-subprocess --setup-work-tree rev-parse --show-toplevel >actual &&
echo "$(pwd)/repo.git/work" >expected &&
test_cmp expected actual
'

test_done
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