#!/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 ! -s output.out
'

test_expect_success 'save -q is quiet' '
	git stash save --quiet > output.out 2>&1 &&
	test ! -s output.out
'

test_expect_success 'pop -q is quiet' '
	git stash pop -q > output.out 2>&1 &&
	test ! -s 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 ! -s output.out
'

test_expect_success 'drop -q is quiet' '
	git stash &&
	git stash drop -q > output.out 2>&1 &&
	test ! -s 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 SYMLINKS 'stash symlink to file' '
	git reset --hard &&
	ln -s file filelink &&
	git add filelink &&
	git commit -m "Add symlink" &&
	rm filelink &&
	cp file filelink &&
	git stash save "symlink to file" &&
	test -h filelink &&
	case "$(ls -l filelink)" in *" filelink -> file") :;; *) false;; esac &&
	git stash apply &&
	! test -h filelink &&
	test bar = "$(cat file)"
'

test_expect_success SYMLINKS 'stash symlink to file (stage rm)' '
	git reset --hard &&
	git rm filelink &&
	cp file filelink &&
	git stash save "symlink to file (stage rm)" &&
	test -h filelink &&
	case "$(ls -l filelink)" in *" filelink -> file") :;; *) false;; esac &&
	git stash apply &&
	! test -h filelink &&
	test bar = "$(cat file)"
'

test_expect_success SYMLINKS '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 -h filelink &&
	case "$(ls -l filelink)" in *" filelink -> file") :;; *) false;; esac &&
	git stash apply &&
	! test -h filelink &&
	test bar = "$(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 - 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 &&
	 file |    1 +
	 1 file changed, 1 insertion(+)
	EOF
	git stash show ${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 &&
	cat >expected <<-EOF &&
	 file |    1 +
	 1 file changed, 1 insertion(+)
	EOF
	git stash show ${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_cmp 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_done