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git/t/t7102-reset.sh
Patrick Steinhardt df383b5842 t/test-lib: wire up NO_ICONV prerequisite 
The iconv library is used by Git to reencode files, commit messages and
other things. As such it is a rather integral part, but given that many
platforms nowadays use UTF-8 everywhere you can live without support for
reencoding in many situations. It is thus optional to build Git with
iconv, and some of our platforms wired up in "config.mak.uname" disable
it. But while we support building without it, running our test suite
with "NO_ICONV=Yes" causes many test failures.

Wire up a new test prerequisite ICONV that gets populated via our
GIT-BUILD-OPTIONS. Annotate failing tests accordingly.

Note that this commit does not do a deep dive into every single test to
assess whether the failure is expected or not. Most of the tests do
smell like the expected kind of failure though.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2024-10-16 17:00:49 -04:00

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#!/bin/sh
#
# Copyright (c) 2007 Carlos Rica
#
test_description='git reset
Documented tests for git reset'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
if test_have_prereq ICONV
then
commit_msg () {
# String "modify 2nd file (changed)" partly in German
# (translated with Google Translate),
# encoded in UTF-8, used as a commit log message below.
msg="modify 2nd file (ge\303\244ndert)\n"
if test -n "$1"
then
printf "$msg" | iconv -f utf-8 -t "$1"
else
printf "$msg"
fi
}
# Tested non-UTF-8 encoding
test_encoding="ISO8859-1"
else
commit_msg () {
echo "modify 2nd file (geandert)"
}
# Tested non-UTF-8 encoding
test_encoding="UTF-8"
fi
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" &&
head5p2=$(git rev-parse --verify HEAD) &&
head5p2f=$(git rev-parse --short HEAD:first) &&
git rm first &&
git mv second secondfile &&
git commit -a -m "remove 1st and rename 2nd" &&
head5p1=$(git rev-parse --verify HEAD) &&
head5p1s=$(git rev-parse --short HEAD:secondfile) &&
echo "1st line 2nd file" >secondfile &&
echo "2nd line 2nd file" >>secondfile &&
# "git commit -m" would break MinGW, as Windows refuse to pass
# $test_encoding encoded parameter to git.
commit_msg $test_encoding | git -c "i18n.commitEncoding=$test_encoding" commit -a -F - &&
head5=$(git rev-parse --verify HEAD) &&
head5s=$(git rev-parse --short HEAD:secondfile) &&
head5sl=$(git rev-parse HEAD:secondfile)
'
# git log --pretty=oneline # to see those SHA1 involved
check_changes () {
test "$(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 $FILE || return
done | test_cmp .cat_expect -
}
# no negated form for various type of resets
for opt in soft mixed hard merge keep
do
test_expect_success "no 'git reset --no-$opt'" '
test_when_finished "rm -f err" &&
test_must_fail git reset --no-$opt 2>err &&
grep "error: unknown option .no-$opt." err
'
done
test_expect_success 'reset --hard message' '
hex=$(git log -1 --format="%h") &&
git reset --hard >.actual &&
echo HEAD is now at $hex $(commit_msg) >.expected &&
test_cmp .expected .actual
'
test_expect_success 'reset --hard message (ISO8859-1 logoutputencoding)' '
hex=$(git log -1 --format="%h") &&
git -c "i18n.logOutputEncoding=$test_encoding" reset --hard >.actual &&
echo HEAD is now at $hex $(commit_msg $test_encoding) >.expected &&
test_cmp .expected .actual
'
test_expect_success 'giving a non existing revision should fail' '
>.diff_expect &&
>.cached_expect &&
cat >.cat_expect <<-\EOF &&
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
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 $head5
'
test_expect_success 'reset --soft with unmerged index should fail' '
touch .git/MERGE_HEAD &&
echo "100644 $head5sl 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 $head5
'
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 $head5
'
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 main &&
git branch -D branch1 branch2 &&
check_changes $head5
'
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 main &&
git branch -D branch3 branch4 &&
check_changes $head5
'
test_expect_success 'resetting to HEAD with no changes should succeed and do nothing' '
git reset --hard &&
check_changes $head5 &&
git reset --hard HEAD &&
check_changes $head5 &&
git reset --soft &&
check_changes $head5 &&
git reset --soft HEAD &&
check_changes $head5 &&
git reset --mixed &&
check_changes $head5 &&
git reset --mixed HEAD &&
check_changes $head5 &&
git reset &&
check_changes $head5 &&
git reset HEAD &&
check_changes $head5
'
test_expect_success '--soft reset only should show changes in diff --cached' '
>.diff_expect &&
cat >.cached_expect <<-EOF &&
diff --git a/secondfile b/secondfile
index $head5p1s..$head5s 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
git reset --soft HEAD^ &&
check_changes $head5p1 &&
test "$(git rev-parse ORIG_HEAD)" = \
$head5
'
test_expect_success 'changing files and redo the last commit should succeed' '
>.diff_expect &&
>.cached_expect &&
cat >.cat_expect <<-\EOF &&
secondfile:
1st line 2nd file
2nd line 2nd file
3rd line 2nd file
EOF
echo "3rd line 2nd file" >>secondfile &&
git commit -a -C ORIG_HEAD &&
head4=$(git rev-parse --verify HEAD) &&
check_changes $head4 &&
test "$(git rev-parse ORIG_HEAD)" = \
$head5
'
test_expect_success '--hard reset should change the files and undo commits permanently' '
>.diff_expect &&
>.cached_expect &&
cat >.cat_expect <<-\EOF &&
first:
1st file
2nd line 1st file
second:
2nd file
EOF
git reset --hard HEAD~2 &&
check_changes $head5p2 &&
test "$(git rev-parse ORIG_HEAD)" = \
$head4
'
test_expect_success 'redoing changes adding them without commit them should succeed' '
>.diff_expect &&
cat >.cached_expect <<-EOF &&
diff --git a/first b/first
deleted file mode 100644
index $head5p2f..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 $head5p1s..0000000
--- a/second
+++ /dev/null
@@ -1 +0,0 @@
-2nd file
diff --git a/secondfile b/secondfile
new file mode 100644
index 0000000..$head5s
--- /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
git rm first &&
git mv second secondfile &&
echo "1st line 2nd file" >secondfile &&
echo "2nd line 2nd file" >>secondfile &&
git add secondfile &&
check_changes $head5p2
'
test_expect_success '--mixed reset to HEAD should unadd the files' '
cat >.diff_expect <<-EOF &&
diff --git a/first b/first
deleted file mode 100644
index $head5p2f..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 $head5p1s..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
git reset &&
check_changes $head5p2 &&
test "$(git rev-parse ORIG_HEAD)" = $head5p2
'
test_expect_success 'redoing the last two commits should succeed' '
>.diff_expect &&
>.cached_expect &&
cat >.cat_expect <<-\EOF &&
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
git add secondfile &&
git reset --hard $head5p2 &&
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 -m" would break MinGW, as Windows refuse to pass
# $test_encoding encoded parameter to git.
commit_msg $test_encoding | git -c "i18n.commitEncoding=$test_encoding" commit -a -F - &&
check_changes $head5
'
test_expect_success '--hard reset to HEAD should clear a failed merge' '
>.diff_expect &&
>.cached_expect &&
cat >.cat_expect <<-\EOF &&
secondfile:
1st line 2nd file
2nd line 2nd file
3rd line in branch2
EOF
git branch branch1 &&
git branch branch2 &&
git checkout branch1 &&
echo "3rd line in branch1" >>secondfile &&
git commit -a -m "change in branch1" &&
git checkout branch2 &&
echo "3rd line in branch2" >>secondfile &&
git commit -a -m "change in branch2" &&
head3=$(git rev-parse --verify HEAD) &&
test_must_fail git pull . branch1 &&
git reset --hard &&
check_changes $head3
'
test_expect_success '--hard reset to ORIG_HEAD should clear a fast-forward merge' '
>.diff_expect &&
>.cached_expect &&
cat >.cat_expect <<-\EOF &&
secondfile:
1st line 2nd file
2nd line 2nd file
EOF
git reset --hard HEAD^ &&
check_changes $head5 &&
git pull . branch1 &&
git reset --hard ORIG_HEAD &&
check_changes $head5 &&
git checkout main &&
git branch -D branch1 branch2 &&
check_changes $head5
'
test_expect_success 'test --mixed <paths>' '
echo 1 >file1 &&
echo 2 >file2 &&
git add file1 file2 &&
test_tick &&
git commit -m files &&
before1=$(git rev-parse --short HEAD:file1) &&
before2=$(git rev-parse --short HEAD:file2) &&
git rm file2 &&
echo 3 >file3 &&
echo 4 >file4 &&
echo 5 >file1 &&
after1=$(git rev-parse --short $(git hash-object file1)) &&
after4=$(git rev-parse --short $(git hash-object file4)) &&
git add file1 file3 file4 &&
git reset HEAD -- file1 file2 file3 &&
test_must_fail git diff --quiet &&
git diff >output &&
cat >expect <<-EOF &&
diff --git a/file1 b/file1
index $before1..$after1 100644
--- a/file1
+++ b/file1
@@ -1 +1 @@
-1
+5
diff --git a/file2 b/file2
deleted file mode 100644
index $before2..0000000
--- a/file2
+++ /dev/null
@@ -1 +0,0 @@
-2
EOF
test_cmp expect output &&
git diff --cached >output &&
cat >cached_expect <<-EOF &&
diff --git a/file4 b/file4
new file mode 100644
index 0000000..$after4
--- /dev/null
+++ b/file4
@@ -0,0 +1 @@
+4
EOF
test_cmp cached_expect output
'
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=$(git write-tree) &&
git reset HEAD sub/file2 &&
test_must_fail git diff --quiet &&
U=$(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
'
test_reset_refreshes_index () {
# To test whether the index is refreshed in `git reset --mixed` with
# the given options, create a scenario where we clearly see different
# results depending on whether the refresh occurred or not.
# Step 0: start with a clean index
git reset --hard HEAD &&
# Step 1: remove file2, but only in the index (no change to worktree)
git rm --cached file2 &&
# Step 2: reset index & leave worktree unchanged from HEAD
git $1 reset $2 --mixed HEAD &&
# Step 3: verify whether the index is refreshed by checking whether
# file2 still has staged changes in the index differing from HEAD (if
# the refresh occurred, there should be no such changes)
git diff-files >output.log &&
test_must_be_empty output.log
}
test_expect_success '--mixed refreshes the index' '
# Verify default behavior (without --[no-]refresh or reset.refresh)
test_reset_refreshes_index &&
# With --quiet
test_reset_refreshes_index "" --quiet
'
test_expect_success '--mixed --[no-]refresh sets refresh behavior' '
# Verify that --[no-]refresh controls index refresh
test_reset_refreshes_index "" --refresh &&
! test_reset_refreshes_index "" --no-refresh
'
test_expect_success '--mixed preserves skip-worktree' '
echo 123 >>file2 &&
git add file2 &&
git update-index --skip-worktree file2 &&
git reset --mixed HEAD >output &&
test_must_be_empty output &&
cat >expect <<-\EOF &&
Unstaged changes after reset:
M file2
EOF
git update-index --no-skip-worktree file2 &&
git add file2 &&
git reset --mixed HEAD >output &&
test_cmp expect output
'
test_expect_success 'resetting specific path that is unmerged' '
git rm --cached file2 &&
F1=$(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 $F3 3 file2"
} | git update-index --index-info &&
git ls-files -u &&
git reset HEAD file2 &&
test_must_fail git diff --quiet &&
git diff-index --exit-code --cached HEAD
'
test_expect_success 'disambiguation (1)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
git reset secondfile &&
test_must_fail git diff --quiet -- secondfile &&
test -z "$(git diff --cached --name-only)" &&
test -f secondfile &&
test_must_be_empty secondfile
'
test_expect_success 'disambiguation (2)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
rm -f secondfile &&
test_must_fail git reset secondfile &&
test -n "$(git diff --cached --name-only -- secondfile)" &&
test ! -f secondfile
'
test_expect_success 'disambiguation (3)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
rm -f secondfile &&
git reset HEAD secondfile &&
test_must_fail git diff --quiet &&
test -z "$(git diff --cached --name-only)" &&
test ! -f secondfile
'
test_expect_success 'disambiguation (4)' '
git reset --hard &&
>secondfile &&
git add secondfile &&
rm -f secondfile &&
git reset -- secondfile &&
test_must_fail git diff --quiet &&
test -z "$(git diff --cached --name-only)" &&
test ! -f secondfile
'
test_expect_success 'reset with paths accepts tree' '
# for simpler tests, drop last commit containing added files
git reset --hard HEAD^ &&
git reset HEAD^^{tree} -- . &&
git diff --cached HEAD^ --exit-code &&
git diff HEAD --exit-code
'
test_expect_success 'reset -N keeps removed files as intent-to-add' '
echo new-file >new-file &&
git add new-file &&
git reset -N HEAD &&
tree=$(git write-tree) &&
git ls-tree $tree new-file >actual &&
test_must_be_empty actual &&
git diff --name-only >actual &&
echo new-file >expect &&
test_cmp expect actual
'
test_expect_success 'reset --mixed sets up work tree' '
git init mixed_worktree &&
(
cd mixed_worktree &&
test_commit dummy
) &&
git --git-dir=mixed_worktree/.git --work-tree=mixed_worktree reset >actual &&
test_must_be_empty actual
'
test_expect_success 'reset handles --end-of-options' '
git update-ref refs/heads/--foo HEAD^ &&
git log -1 --format=%s refs/heads/--foo >expect &&
git reset --hard --end-of-options --foo &&
git log -1 --format=%s HEAD >actual &&
test_cmp expect actual
'
test_done
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