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git/t/t3903-stash.sh
Petr Baudis a73653130e git stash: avoid data loss when "git stash save" kills a directory 
"stash save" is about saving the local change to the working tree,
but also about restoring the state of the last commit to the working
tree.  When a local change is to turn a non-directory to a directory,
in order to restore the non-directory, everything in the directory
needs to be removed.

Which is fine when running "git stash save --include-untracked",
but without that option, untracked, newly created files in the
directory will have to be discarded, if the state you are restoring
to has a non-directory at the same path as the directory.

Introduce a safety valve to fail the operation in such case, using
the "ls-files --killed" which was designed for this exact purpose.

The "stash save" is stopped when untracked files need to be
discarded because their leading path ceased to be a directory, and
the user is required to pass --force to really have the data
removed.

Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-01 14:23:24 -07:00

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#!/bin/sh
#
# Copyright (c) 2007 Johannes E Schindelin
#
test_description='Test git stash'
. ./test-lib.sh
test_expect_success 'stash some dirty working directory' '
echo 1 > file &&
git add file &&
test_tick &&
git commit -m initial &&
echo 2 > file &&
git add file &&
echo 3 > file &&
test_tick &&
git stash &&
git diff-files --quiet &&
git diff-index --cached --quiet HEAD
'
cat > expect << EOF
diff --git a/file b/file
index 0cfbf08..00750ed 100644
--- a/file
+++ b/file
@@ -1 +1 @@
-2
+3
EOF
test_expect_success 'parents of stash' '
test $(git rev-parse stash^) = $(git rev-parse HEAD) &&
git diff stash^2..stash > output &&
test_cmp output expect
'
test_expect_success 'applying bogus stash does nothing' '
test_must_fail git stash apply stash@{1} &&
echo 1 >expect &&
test_cmp expect file
'
test_expect_success 'apply does not need clean working directory' '
echo 4 >other-file &&
git add other-file &&
echo 5 >other-file &&
git stash apply &&
echo 3 >expect &&
test_cmp expect file
'
test_expect_success 'apply does not clobber working directory changes' '
git reset --hard &&
echo 4 >file &&
test_must_fail git stash apply &&
echo 4 >expect &&
test_cmp expect file
'
test_expect_success 'apply stashed changes' '
git reset --hard &&
echo 5 >other-file &&
git add other-file &&
test_tick &&
git commit -m other-file &&
git stash apply &&
test 3 = $(cat file) &&
test 1 = $(git show :file) &&
test 1 = $(git show HEAD:file)
'
test_expect_success 'apply stashed changes (including index)' '
git reset --hard HEAD^ &&
echo 6 > other-file &&
git add other-file &&
test_tick &&
git commit -m other-file &&
git stash apply --index &&
test 3 = $(cat file) &&
test 2 = $(git show :file) &&
test 1 = $(git show HEAD:file)
'
test_expect_success 'unstashing in a subdirectory' '
git reset --hard HEAD &&
mkdir subdir &&
(
cd subdir &&
git stash apply
)
'
test_expect_success 'drop top stash' '
git reset --hard &&
git stash list > stashlist1 &&
echo 7 > file &&
git stash &&
git stash drop &&
git stash list > stashlist2 &&
test_cmp stashlist1 stashlist2 &&
git stash apply &&
test 3 = $(cat file) &&
test 1 = $(git show :file) &&
test 1 = $(git show HEAD:file)
'
test_expect_success 'drop middle stash' '
git reset --hard &&
echo 8 > file &&
git stash &&
echo 9 > file &&
git stash &&
git stash drop stash@{1} &&
test 2 = $(git stash list | wc -l) &&
git stash apply &&
test 9 = $(cat file) &&
test 1 = $(git show :file) &&
test 1 = $(git show HEAD:file) &&
git reset --hard &&
git stash drop &&
git stash apply &&
test 3 = $(cat file) &&
test 1 = $(git show :file) &&
test 1 = $(git show HEAD:file)
'
test_expect_success 'stash pop' '
git reset --hard &&
git stash pop &&
test 3 = $(cat file) &&
test 1 = $(git show :file) &&
test 1 = $(git show HEAD:file) &&
test 0 = $(git stash list | wc -l)
'
cat > expect << EOF
diff --git a/file2 b/file2
new file mode 100644
index 0000000..1fe912c
--- /dev/null
+++ b/file2
@@ -0,0 +1 @@
+bar2
EOF
cat > expect1 << EOF
diff --git a/file b/file
index 257cc56..5716ca5 100644
--- a/file
+++ b/file
@@ -1 +1 @@
-foo
+bar
EOF
cat > expect2 << EOF
diff --git a/file b/file
index 7601807..5716ca5 100644
--- a/file
+++ b/file
@@ -1 +1 @@
-baz
+bar
diff --git a/file2 b/file2
new file mode 100644
index 0000000..1fe912c
--- /dev/null
+++ b/file2
@@ -0,0 +1 @@
+bar2
EOF
test_expect_success 'stash branch' '
echo foo > file &&
git commit file -m first &&
echo bar > file &&
echo bar2 > file2 &&
git add file2 &&
git stash &&
echo baz > file &&
git commit file -m second &&
git stash branch stashbranch &&
test refs/heads/stashbranch = $(git symbolic-ref HEAD) &&
test $(git rev-parse HEAD) = $(git rev-parse master^) &&
git diff --cached > output &&
test_cmp output expect &&
git diff > output &&
test_cmp output expect1 &&
git add file &&
git commit -m alternate\ second &&
git diff master..stashbranch > output &&
test_cmp output expect2 &&
test 0 = $(git stash list | wc -l)
'
test_expect_success 'apply -q is quiet' '
echo foo > file &&
git stash &&
git stash apply -q > output.out 2>&1 &&
test_must_be_empty output.out
'
test_expect_success 'save -q is quiet' '
git stash save --quiet > output.out 2>&1 &&
test_must_be_empty output.out
'
test_expect_success 'pop -q is quiet' '
git stash pop -q > output.out 2>&1 &&
test_must_be_empty output.out
'
test_expect_success 'pop -q --index works and is quiet' '
echo foo > file &&
git add file &&
git stash save --quiet &&
git stash pop -q --index > output.out 2>&1 &&
test foo = "$(git show :file)" &&
test_must_be_empty output.out
'
test_expect_success 'drop -q is quiet' '
git stash &&
git stash drop -q > output.out 2>&1 &&
test_must_be_empty output.out
'
test_expect_success 'stash -k' '
echo bar3 > file &&
echo bar4 > file2 &&
git add file2 &&
git stash -k &&
test bar,bar4 = $(cat file),$(cat file2)
'
test_expect_success 'stash --no-keep-index' '
echo bar33 > file &&
echo bar44 > file2 &&
git add file2 &&
git stash --no-keep-index &&
test bar,bar2 = $(cat file),$(cat file2)
'
test_expect_success 'stash --invalid-option' '
echo bar5 > file &&
echo bar6 > file2 &&
git add file2 &&
test_must_fail git stash --invalid-option &&
test_must_fail git stash save --invalid-option &&
test bar5,bar6 = $(cat file),$(cat file2) &&
git stash -- -message-starting-with-dash &&
test bar,bar2 = $(cat file),$(cat file2)
'
test_expect_success 'stash an added file' '
git reset --hard &&
echo new >file3 &&
git add file3 &&
git stash save "added file" &&
! test -r file3 &&
git stash apply &&
test new = "$(cat file3)"
'
test_expect_success 'stash rm then recreate' '
git reset --hard &&
git rm file &&
echo bar7 >file &&
git stash save "rm then recreate" &&
test bar = "$(cat file)" &&
git stash apply &&
test bar7 = "$(cat file)"
'
test_expect_success 'stash rm and ignore' '
git reset --hard &&
git rm file &&
echo file >.gitignore &&
git stash save "rm and ignore" &&
test bar = "$(cat file)" &&
test file = "$(cat .gitignore)" &&
git stash apply &&
! test -r file &&
test file = "$(cat .gitignore)"
'
test_expect_success 'stash rm and ignore (stage .gitignore)' '
git reset --hard &&
git rm file &&
echo file >.gitignore &&
git add .gitignore &&
git stash save "rm and ignore (stage .gitignore)" &&
test bar = "$(cat file)" &&
! test -r .gitignore &&
git stash apply &&
! test -r file &&
test file = "$(cat .gitignore)"
'
test_expect_success SYMLINKS 'stash file to symlink' '
git reset --hard &&
rm file &&
ln -s file2 file &&
git stash save "file to symlink" &&
test -f file &&
test bar = "$(cat file)" &&
git stash apply &&
case "$(ls -l file)" in *" file -> file2") :;; *) false;; esac
'
test_expect_success SYMLINKS 'stash file to symlink (stage rm)' '
git reset --hard &&
git rm file &&
ln -s file2 file &&
git stash save "file to symlink (stage rm)" &&
test -f file &&
test bar = "$(cat file)" &&
git stash apply &&
case "$(ls -l file)" in *" file -> file2") :;; *) false;; esac
'
test_expect_success SYMLINKS 'stash file to symlink (full stage)' '
git reset --hard &&
rm file &&
ln -s file2 file &&
git add file &&
git stash save "file to symlink (full stage)" &&
test -f file &&
test bar = "$(cat file)" &&
git stash apply &&
case "$(ls -l file)" in *" file -> file2") :;; *) false;; esac
'
# This test creates a commit with a symlink used for the following tests
test_expect_success 'stash symlink to file' '
git reset --hard &&
test_ln_s_add file filelink &&
git commit -m "Add symlink" &&
rm filelink &&
cp file filelink &&
git stash save "symlink to file"
'
test_expect_success SYMLINKS 'this must have re-created the symlink' '
test -h filelink &&
case "$(ls -l filelink)" in *" filelink -> file") :;; *) false;; esac
'
test_expect_success 'unstash must re-create the file' '
git stash apply &&
! test -h filelink &&
test bar = "$(cat file)"
'
test_expect_success 'stash symlink to file (stage rm)' '
git reset --hard &&
git rm filelink &&
cp file filelink &&
git stash save "symlink to file (stage rm)"
'
test_expect_success SYMLINKS 'this must have re-created the symlink' '
test -h filelink &&
case "$(ls -l filelink)" in *" filelink -> file") :;; *) false;; esac
'
test_expect_success 'unstash must re-create the file' '
git stash apply &&
! test -h filelink &&
test bar = "$(cat file)"
'
test_expect_success 'stash symlink to file (full stage)' '
git reset --hard &&
rm filelink &&
cp file filelink &&
git add filelink &&
git stash save "symlink to file (full stage)"
'
test_expect_success SYMLINKS 'this must have re-created the symlink' '
test -h filelink &&
case "$(ls -l filelink)" in *" filelink -> file") :;; *) false;; esac
'
test_expect_success 'unstash must re-create the file' '
git stash apply &&
! test -h filelink &&
test bar = "$(cat file)"
'
test_expect_failure 'stash directory to file' '
git reset --hard &&
mkdir dir &&
echo foo >dir/file &&
git add dir/file &&
git commit -m "Add file in dir" &&
rm -fr dir &&
echo bar >dir &&
git stash save "directory to file" &&
test -d dir &&
test foo = "$(cat dir/file)" &&
test_must_fail git stash apply &&
test bar = "$(cat dir)" &&
git reset --soft HEAD^
'
test_expect_failure 'stash file to directory' '
git reset --hard &&
rm file &&
mkdir file &&
echo foo >file/file &&
git stash save "file to directory" &&
test -f file &&
test bar = "$(cat file)" &&
git stash apply &&
test -f file/file &&
test foo = "$(cat file/file)"
'
test_expect_success 'stash branch - no stashes on stack, stash-like argument' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
git stash branch stash-branch ${STASH_ID} &&
test_when_finished "git reset --hard HEAD && git checkout master && git branch -D stash-branch" &&
test $(git ls-files --modified | wc -l) -eq 1
'
test_expect_success 'stash branch - stashes on stack, stash-like argument' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
git stash &&
test_when_finished "git stash drop" &&
echo bar >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
git stash branch stash-branch ${STASH_ID} &&
test_when_finished "git reset --hard HEAD && git checkout master && git branch -D stash-branch" &&
test $(git ls-files --modified | wc -l) -eq 1
'
test_expect_success 'stash show format defaults to --stat' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
git stash &&
test_when_finished "git stash drop" &&
echo bar >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
cat >expected <<-EOF &&
file | 1 +
1 file changed, 1 insertion(+)
EOF
git stash show ${STASH_ID} >actual &&
test_i18ncmp expected actual
'
test_expect_success 'stash show - stashes on stack, stash-like argument' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
git stash &&
test_when_finished "git stash drop" &&
echo bar >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
echo "1 0 file" >expected &&
git stash show --numstat ${STASH_ID} >actual &&
test_cmp expected actual
'
test_expect_success 'stash show -p - stashes on stack, stash-like argument' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
git stash &&
test_when_finished "git stash drop" &&
echo bar >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
cat >expected <<-EOF &&
diff --git a/file b/file
index 7601807..935fbd3 100644
--- a/file
+++ b/file
@@ -1 +1,2 @@
baz
+bar
EOF
git stash show -p ${STASH_ID} >actual &&
test_cmp expected actual
'
test_expect_success 'stash show - no stashes on stack, stash-like argument' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
echo "1 0 file" >expected &&
git stash show --numstat ${STASH_ID} >actual &&
test_cmp expected actual
'
test_expect_success 'stash show -p - no stashes on stack, stash-like argument' '
git stash clear &&
test_when_finished "git reset --hard HEAD" &&
git reset --hard &&
echo foo >> file &&
STASH_ID=$(git stash create) &&
git reset --hard &&
cat >expected <<-EOF &&
diff --git a/file b/file
index 7601807..71b52c4 100644
--- a/file
+++ b/file
@@ -1 +1,2 @@
baz
+foo
EOF
git stash show -p ${STASH_ID} >actual &&
test_cmp expected actual
'
test_expect_success 'stash drop - fail early if specified stash is not a stash reference' '
git stash clear &&
test_when_finished "git reset --hard HEAD && git stash clear" &&
git reset --hard &&
echo foo > file &&
git stash &&
echo bar > file &&
git stash &&
test_must_fail git stash drop $(git rev-parse stash@{0}) &&
git stash pop &&
test bar = "$(cat file)" &&
git reset --hard HEAD
'
test_expect_success 'stash pop - fail early if specified stash is not a stash reference' '
git stash clear &&
test_when_finished "git reset --hard HEAD && git stash clear" &&
git reset --hard &&
echo foo > file &&
git stash &&
echo bar > file &&
git stash &&
test_must_fail git stash pop $(git rev-parse stash@{0}) &&
git stash pop &&
test bar = "$(cat file)" &&
git reset --hard HEAD
'
test_expect_success 'ref with non-existent reflog' '
git stash clear &&
echo bar5 > file &&
echo bar6 > file2 &&
git add file2 &&
git stash &&
test_must_fail git rev-parse --quiet --verify does-not-exist &&
test_must_fail git stash drop does-not-exist &&
test_must_fail git stash drop does-not-exist@{0} &&
test_must_fail git stash pop does-not-exist &&
test_must_fail git stash pop does-not-exist@{0} &&
test_must_fail git stash apply does-not-exist &&
test_must_fail git stash apply does-not-exist@{0} &&
test_must_fail git stash show does-not-exist &&
test_must_fail git stash show does-not-exist@{0} &&
test_must_fail git stash branch tmp does-not-exist &&
test_must_fail git stash branch tmp does-not-exist@{0} &&
git stash drop
'
test_expect_success 'invalid ref of the form stash@{n}, n >= N' '
git stash clear &&
test_must_fail git stash drop stash@{0} &&
echo bar5 > file &&
echo bar6 > file2 &&
git add file2 &&
git stash &&
test_must_fail git stash drop stash@{1} &&
test_must_fail git stash pop stash@{1} &&
test_must_fail git stash apply stash@{1} &&
test_must_fail git stash show stash@{1} &&
test_must_fail git stash branch tmp stash@{1} &&
git stash drop
'
test_expect_success 'stash branch should not drop the stash if the branch exists' '
git stash clear &&
echo foo >file &&
git add file &&
git commit -m initial &&
echo bar >file &&
git stash &&
test_must_fail git stash branch master stash@{0} &&
git rev-parse stash@{0} --
'
test_expect_success 'stash apply shows status same as git status (relative to current directory)' '
git stash clear &&
echo 1 >subdir/subfile1 &&
echo 2 >subdir/subfile2 &&
git add subdir/subfile1 &&
git commit -m subdir &&
(
cd subdir &&
echo x >subfile1 &&
echo x >../file &&
git status >../expect &&
git stash &&
sane_unset GIT_MERGE_VERBOSITY &&
git stash apply
) |
sed -e 1,2d >actual && # drop "Saved..." and "HEAD is now..."
test_i18ncmp expect actual
'
cat > expect << EOF
diff --git a/HEAD b/HEAD
new file mode 100644
index 0000000..fe0cbee
--- /dev/null
+++ b/HEAD
@@ -0,0 +1 @@
+file-not-a-ref
EOF
test_expect_success 'stash where working directory contains "HEAD" file' '
git stash clear &&
git reset --hard &&
echo file-not-a-ref > HEAD &&
git add HEAD &&
test_tick &&
git stash &&
git diff-files --quiet &&
git diff-index --cached --quiet HEAD &&
test "$(git rev-parse stash^)" = "$(git rev-parse HEAD)" &&
git diff stash^..stash > output &&
test_cmp output expect
'
test_expect_success 'store called with invalid commit' '
test_must_fail git stash store foo
'
test_expect_success 'store updates stash ref and reflog' '
git stash clear &&
git reset --hard &&
echo quux >bazzy &&
git add bazzy &&
STASH_ID=$(git stash create) &&
git reset --hard &&
! grep quux bazzy &&
git stash store -m quuxery $STASH_ID &&
test $(cat .git/refs/stash) = $STASH_ID &&
grep $STASH_ID .git/logs/refs/stash &&
git stash pop &&
grep quux bazzy
'
test_expect_success 'stash a change to turn a non-directory to a directory' '
git reset --hard &&
>testfile &&
git add testfile &&
git commit -m "add testfile as a regular file" &&
rm testfile &&
mkdir testfile &&
>testfile/file &&
test_must_fail git stash save "recover regular file" &&
test -f testfile/file
'
test_expect_success 'stash a change to turn a non-directory to a directory (forced)' '
git stash save --force "recover regular file (forced)" &&
! test -f testfile/file &&
test -f testfile
'
test_done
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