#!/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 'handle stash specification with spaces' '
        git stash clear &&
        echo pig >file &&
        git stash &&
        stamp=$(git log -g --format="%cd" -1 refs/stash) &&
        test_tick &&
        echo cow >file &&
        git stash &&
        git stash apply "stash@{$stamp}" &&
        grep pig file
'

test_expect_success 'setup stash with index and worktree changes' '
        git stash clear &&
        git reset --hard &&
        echo index >file &&
        git add file &&
        echo working >file &&
        git stash
'

test_expect_success 'stash list implies --first-parent -m' '
        cat >expect <<-\EOF &&
        stash@{0}: WIP on master: b27a2bc subdir

        diff --git a/file b/file
        index 257cc56..d26b33d 100644
        --- a/file
        +++ b/file
        @@ -1 +1 @@
        -foo
        +working
        EOF
        git stash list -p >actual &&
        test_cmp expect actual
'

test_expect_success 'stash list --cc shows combined diff' '
        cat >expect <<-\EOF &&
        stash@{0}: WIP on master: b27a2bc subdir

        diff --cc file
        index 257cc56,9015a7a..d26b33d
        --- a/file
        +++ b/file
        @@@ -1,1 -1,1 +1,1 @@@
        - foo
         -index
        ++working
        EOF
        git stash list -p --cc >actual &&
        test_cmp expect actual
'

test_done