git/t/t7102-reset.sh
Junio C Hamano ff00b682f2 reset [<commit>] paths...: do not mishandle unmerged paths
Because "diff --cached HEAD" showed an incorrect blob object name on the
LHS of the diff, we ended up updating the index entry with bogus value,
not what we read from the tree.

Noticed by John Nowak.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-07-13 21:39:18 -07:00

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#!/bin/sh
#
# Copyright (c) 2007 Carlos Rica
#
test_description='git reset
Documented tests for git reset'
. ./test-lib.sh
test_expect_success 'creating initial files and commits' '
test_tick &&
echo "1st file" >first &&
git add first &&
git commit -m "create 1st file" &&
echo "2nd file" >second &&
git add second &&
git commit -m "create 2nd file" &&
echo "2nd line 1st file" >>first &&
git commit -a -m "modify 1st file" &&
git rm first &&
git mv second secondfile &&
git commit -a -m "remove 1st and rename 2nd" &&
echo "1st line 2nd file" >secondfile &&
echo "2nd line 2nd file" >>secondfile &&
git commit -a -m "modify 2nd file"
'
# git log --pretty=oneline # to see those SHA1 involved
check_changes () {
test "$(git rev-parse HEAD)" = "$1" &&
git diff | test_cmp .diff_expect - &&
git diff --cached | test_cmp .cached_expect - &&
for FILE in *
do
echo $FILE':'
cat $FILE || return
done | test_cmp .cat_expect -
}
>.diff_expect
>.cached_expect
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
test_expect_success 'giving a non existing revision should fail' '
test_must_fail git reset aaaaaa &&
test_must_fail git reset --mixed aaaaaa &&
test_must_fail git reset --soft aaaaaa &&
test_must_fail git reset --hard aaaaaa &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
test_expect_success 'reset --soft with unmerged index should fail' '
touch .git/MERGE_HEAD &&
echo "100644 44c5b5884550c17758737edcced463447b91d42b 1 un" |
git update-index --index-info &&
test_must_fail git reset --soft HEAD &&
rm .git/MERGE_HEAD &&
git rm --cached -- un
'
test_expect_success \
'giving paths with options different than --mixed should fail' '
test_must_fail git reset --soft -- first &&
test_must_fail git reset --hard -- first &&
test_must_fail git reset --soft HEAD^ -- first &&
test_must_fail git reset --hard HEAD^ -- first &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
test_expect_success 'giving unrecognized options should fail' '
test_must_fail git reset --other &&
test_must_fail git reset -o &&
test_must_fail git reset --mixed --other &&
test_must_fail git reset --mixed -o &&
test_must_fail git reset --soft --other &&
test_must_fail git reset --soft -o &&
test_must_fail git reset --hard --other &&
test_must_fail git reset --hard -o &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
test_expect_success \
'trying to do reset --soft with pending merge should fail' '
git branch branch1 &&
git branch branch2 &&
git checkout branch1 &&
echo "3rd line in branch1" >>secondfile &&
git commit -a -m "change in branch1" &&
git checkout branch2 &&
echo "3rd line in branch2" >>secondfile &&
git commit -a -m "change in branch2" &&
test_must_fail git merge branch1 &&
test_must_fail git reset --soft &&
printf "1st line 2nd file\n2nd line 2nd file\n3rd line" >secondfile &&
git commit -a -m "the change in branch2" &&
git checkout master &&
git branch -D branch1 branch2 &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
test_expect_success \
'trying to do reset --soft with pending checkout merge should fail' '
git branch branch3 &&
git branch branch4 &&
git checkout branch3 &&
echo "3rd line in branch3" >>secondfile &&
git commit -a -m "line in branch3" &&
git checkout branch4 &&
echo "3rd line in branch4" >>secondfile &&
git checkout -m branch3 &&
test_must_fail git reset --soft &&
printf "1st line 2nd file\n2nd line 2nd file\n3rd line" >secondfile &&
git commit -a -m "the line in branch3" &&
git checkout master &&
git branch -D branch3 branch4 &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
test_expect_success \
'resetting to HEAD with no changes should succeed and do nothing' '
git reset --hard &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset --hard HEAD &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset --soft &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset --soft HEAD &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset --mixed &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset --mixed HEAD &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git reset HEAD &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
>.diff_expect
cat >.cached_expect <<EOF
diff --git a/secondfile b/secondfile
index 1bbba79..44c5b58 100644
--- a/secondfile
+++ b/secondfile
@@ -1 +1,2 @@
-2nd file
+1st line 2nd file
+2nd line 2nd file
EOF
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
test_expect_success '--soft reset only should show changes in diff --cached' '
git reset --soft HEAD^ &&
check_changes d1a4bc3abce4829628ae2dcb0d60ef3d1a78b1c4 &&
test "$(git rev-parse ORIG_HEAD)" = \
3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
>.diff_expect
>.cached_expect
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
3rd line 2nd file
EOF
test_expect_success \
'changing files and redo the last commit should succeed' '
echo "3rd line 2nd file" >>secondfile &&
git commit -a -C ORIG_HEAD &&
check_changes 3d3b7be011a58ca0c179ae45d94e6c83c0b0cd0d &&
test "$(git rev-parse ORIG_HEAD)" = \
3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
>.diff_expect
>.cached_expect
cat >.cat_expect <<EOF
first:
1st file
2nd line 1st file
second:
2nd file
EOF
test_expect_success \
'--hard reset should change the files and undo commits permanently' '
git reset --hard HEAD~2 &&
check_changes ddaefe00f1da16864591c61fdc7adb5d7cd6b74e &&
test "$(git rev-parse ORIG_HEAD)" = \
3d3b7be011a58ca0c179ae45d94e6c83c0b0cd0d
'
>.diff_expect
cat >.cached_expect <<EOF
diff --git a/first b/first
deleted file mode 100644
index 8206c22..0000000
--- a/first
+++ /dev/null
@@ -1,2 +0,0 @@
-1st file
-2nd line 1st file
diff --git a/second b/second
deleted file mode 100644
index 1bbba79..0000000
--- a/second
+++ /dev/null
@@ -1 +0,0 @@
-2nd file
diff --git a/secondfile b/secondfile
new file mode 100644
index 0000000..44c5b58
--- /dev/null
+++ b/secondfile
@@ -0,0 +1,2 @@
+1st line 2nd file
+2nd line 2nd file
EOF
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
test_expect_success \
'redoing changes adding them without commit them should succeed' '
git rm first &&
git mv second secondfile &&
echo "1st line 2nd file" >secondfile &&
echo "2nd line 2nd file" >>secondfile &&
git add secondfile &&
check_changes ddaefe00f1da16864591c61fdc7adb5d7cd6b74e
'
cat >.diff_expect <<EOF
diff --git a/first b/first
deleted file mode 100644
index 8206c22..0000000
--- a/first
+++ /dev/null
@@ -1,2 +0,0 @@
-1st file
-2nd line 1st file
diff --git a/second b/second
deleted file mode 100644
index 1bbba79..0000000
--- a/second
+++ /dev/null
@@ -1 +0,0 @@
-2nd file
EOF
>.cached_expect
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
test_expect_success '--mixed reset to HEAD should unadd the files' '
git reset &&
check_changes ddaefe00f1da16864591c61fdc7adb5d7cd6b74e &&
test "$(git rev-parse ORIG_HEAD)" = \
ddaefe00f1da16864591c61fdc7adb5d7cd6b74e
'
>.diff_expect
>.cached_expect
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
test_expect_success 'redoing the last two commits should succeed' '
git add secondfile &&
git reset --hard ddaefe00f1da16864591c61fdc7adb5d7cd6b74e &&
git rm first &&
git mv second secondfile &&
git commit -a -m "remove 1st and rename 2nd" &&
echo "1st line 2nd file" >secondfile &&
echo "2nd line 2nd file" >>secondfile &&
git commit -a -m "modify 2nd file" &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
>.diff_expect
>.cached_expect
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
3rd line in branch2
EOF
test_expect_success '--hard reset to HEAD should clear a failed merge' '
git branch branch1 &&
git branch branch2 &&
git checkout branch1 &&
echo "3rd line in branch1" >>secondfile &&
git commit -a -m "change in branch1" &&
git checkout branch2 &&
echo "3rd line in branch2" >>secondfile &&
git commit -a -m "change in branch2" &&
test_must_fail git pull . branch1 &&
git reset --hard &&
check_changes 77abb337073fb4369a7ad69ff6f5ec0e4d6b54bb
'
>.diff_expect
>.cached_expect
cat >.cat_expect <<EOF
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
test_expect_success \
'--hard reset to ORIG_HEAD should clear a fast-forward merge' '
git reset --hard HEAD^ &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git pull . branch1 &&
git reset --hard ORIG_HEAD &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
git checkout master &&
git branch -D branch1 branch2 &&
check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
'
cat > expect << EOF
diff --git a/file1 b/file1
index d00491f..7ed6ff8 100644
--- a/file1
+++ b/file1
@@ -1 +1 @@
-1
+5
diff --git a/file2 b/file2
deleted file mode 100644
index 0cfbf08..0000000
--- a/file2
+++ /dev/null
@@ -1 +0,0 @@
-2
EOF
cat > cached_expect << EOF
diff --git a/file4 b/file4
new file mode 100644
index 0000000..b8626c4
--- /dev/null
+++ b/file4
@@ -0,0 +1 @@
+4
EOF
test_expect_success 'test --mixed <paths>' '
echo 1 > file1 &&
echo 2 > file2 &&
git add file1 file2 &&
test_tick &&
git commit -m files &&
git rm file2 &&
echo 3 > file3 &&
echo 4 > file4 &&
echo 5 > file1 &&
git add file1 file3 file4 &&
test_must_fail git reset HEAD -- file1 file2 file3 &&
git diff > output &&
test_cmp output expect &&
git diff --cached > output &&
test_cmp output cached_expect
'
test_expect_success 'test resetting the index at give paths' '
mkdir sub &&
>sub/file1 &&
>sub/file2 &&
git update-index --add sub/file1 sub/file2 &&
T=$(git write-tree) &&
test_must_fail git reset HEAD sub/file2 &&
U=$(git write-tree) &&
echo "$T" &&
echo "$U" &&
test_must_fail git diff-index --cached --exit-code "$T" &&
test "$T" != "$U"
'
test_expect_success 'resetting an unmodified path is a no-op' '
git reset --hard &&
git reset -- file1 &&
git diff-files --exit-code &&
git diff-index --cached --exit-code HEAD
'
cat > expect << EOF
Unstaged changes after reset:
M file2
EOF
test_expect_success '--mixed refreshes the index' '
echo 123 >> file2 &&
git reset --mixed HEAD > output &&
test_i18ncmp expect output
'
test_expect_success 'resetting specific path that is unmerged' '
git rm --cached file2 &&
F1=$(git rev-parse HEAD:file1) &&
F2=$(git rev-parse HEAD:file2) &&
F3=$(git rev-parse HEAD:secondfile) &&
{
echo "100644 $F1 1 file2" &&
echo "100644 $F2 2 file2" &&
echo "100644 $F3 3 file2"
} | git update-index --index-info &&
git ls-files -u &&
test_must_fail git reset HEAD file2 &&
git diff-index --exit-code --cached HEAD
'
test_expect_success 'disambiguation (1)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
test_must_fail git reset secondfile &&
test -z "$(git diff --cached --name-only)" &&
test -f secondfile &&
test ! -s secondfile
'
test_expect_success 'disambiguation (2)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
rm -f secondfile &&
test_must_fail git reset secondfile &&
test -n "$(git diff --cached --name-only -- secondfile)" &&
test ! -f secondfile
'
test_expect_success 'disambiguation (3)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
rm -f secondfile &&
test_must_fail git reset HEAD secondfile &&
test -z "$(git diff --cached --name-only)" &&
test ! -f secondfile
'
test_expect_success 'disambiguation (4)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
rm -f secondfile &&
test_must_fail git reset -- secondfile &&
test -z "$(git diff --cached --name-only)" &&
test ! -f secondfile
'
test_done