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git-commit-vandalism/t/t6120-describe.sh
Eric Sunshine 0c51d6b4ae t6000-t9999: detect and signal failure within loop 
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00

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#!/bin/sh
test_description='test describe'
# o---o-----o----o----o-------o----x
# \ D,R e /
# \---o-------------o-'
# \ B /
# `-o----o----o-'
# A c
#
# First parent of a merge commit is on the same line, second parent below.
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
check_describe () {
indir= &&
while test $# != 0
do
case "$1" in
-C)
indir="$2"
shift
;;
*)
break
;;
esac
shift
done &&
indir=${indir:+"$indir"/} &&
expect="$1"
shift
describe_opts="$@"
test_expect_success "describe $describe_opts" '
git ${indir:+ -C "$indir"} describe $describe_opts >raw &&
sed -e "s/-g[0-9a-f]*\$/-gHASH/" <raw >actual &&
echo "$expect" >expect &&
test_cmp expect actual
'
}
test_expect_success setup '
test_commit initial file one &&
test_commit second file two &&
test_commit third file three &&
test_commit --annotate A file A &&
test_commit c file c &&
git reset --hard second &&
test_commit --annotate B side B &&
test_tick &&
git merge -m Merged c &&
merged=$(git rev-parse HEAD) &&
git reset --hard second &&
test_commit --no-tag D another D &&
test_tick &&
git tag -a -m R R &&
test_commit e another DD &&
test_commit --no-tag "yet another" another DDD &&
test_tick &&
git merge -m Merged $merged &&
test_commit --no-tag x file
'
check_describe A-8-gHASH HEAD
check_describe A-7-gHASH HEAD^
check_describe R-2-gHASH HEAD^^
check_describe A-3-gHASH HEAD^^2
check_describe B HEAD^^2^
check_describe R-1-gHASH HEAD^^^
check_describe c-7-gHASH --tags HEAD
check_describe c-6-gHASH --tags HEAD^
check_describe e-1-gHASH --tags HEAD^^
check_describe c-2-gHASH --tags HEAD^^2
check_describe B --tags HEAD^^2^
check_describe e --tags HEAD^^^
check_describe heads/main --all HEAD
check_describe tags/c-6-gHASH --all HEAD^
check_describe tags/e --all HEAD^^^
check_describe B-0-gHASH --long HEAD^^2^
check_describe A-3-gHASH --long HEAD^^2
check_describe c-7-gHASH --tags
check_describe e-3-gHASH --first-parent --tags
test_expect_success 'describe --contains defaults to HEAD without commit-ish' '
echo "A^0" >expect &&
git checkout A &&
test_when_finished "git checkout -" &&
git describe --contains >actual &&
test_cmp expect actual
'
check_describe tags/A --all A^0
test_expect_success 'renaming tag A to Q locally produces a warning' "
git update-ref refs/tags/Q $(git rev-parse refs/tags/A) &&
git update-ref -d refs/tags/A &&
git describe HEAD 2>err >out &&
cat >expected <<-\EOF &&
warning: tag 'Q' is externally known as 'A'
EOF
test_cmp expected err &&
grep -E '^A-8-g[0-9a-f]+$' out
"
test_expect_success 'misnamed annotated tag forces long output' '
description=$(git describe --no-long Q^0) &&
expr "$description" : "A-0-g[0-9a-f]*$" &&
git rev-parse --verify "$description" >actual &&
git rev-parse --verify Q^0 >expect &&
test_cmp expect actual
'
test_expect_success 'abbrev=0 will not break misplaced tag (1)' '
description=$(git describe --abbrev=0 Q^0) &&
expr "$description" : "A-0-g[0-9a-f]*$"
'
test_expect_success 'abbrev=0 will not break misplaced tag (2)' '
description=$(git describe --abbrev=0 c^0) &&
expr "$description" : "A-1-g[0-9a-f]*$"
'
test_expect_success 'rename tag Q back to A' '
git update-ref refs/tags/A $(git rev-parse refs/tags/Q) &&
git update-ref -d refs/tags/Q
'
test_expect_success 'pack tag refs' 'git pack-refs'
check_describe A-8-gHASH HEAD
test_expect_success 'describe works from outside repo using --git-dir' '
git clone --bare "$TRASH_DIRECTORY" "$TRASH_DIRECTORY/bare" &&
git --git-dir "$TRASH_DIRECTORY/bare" describe >out &&
grep -E "^A-8-g[0-9a-f]+$" out
'
check_describe "A-8-gHASH" --dirty
test_expect_success 'describe --dirty with --work-tree' '
(
cd "$TEST_DIRECTORY" &&
git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe --dirty >"$TRASH_DIRECTORY/out"
) &&
grep -E "^A-8-g[0-9a-f]+$" out
'
test_expect_success 'set-up dirty work tree' '
echo >>file
'
test_expect_success 'describe --dirty with --work-tree (dirty)' '
git describe --dirty >expected &&
(
cd "$TEST_DIRECTORY" &&
git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe --dirty >"$TRASH_DIRECTORY/out"
) &&
grep -E "^A-8-g[0-9a-f]+-dirty$" out &&
test_cmp expected out
'
test_expect_success 'describe --dirty=.mod with --work-tree (dirty)' '
git describe --dirty=.mod >expected &&
(
cd "$TEST_DIRECTORY" &&
git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe --dirty=.mod >"$TRASH_DIRECTORY/out"
) &&
grep -E "^A-8-g[0-9a-f]+.mod$" out &&
test_cmp expected out
'
test_expect_success 'describe --dirty HEAD' '
test_must_fail git describe --dirty HEAD
'
test_expect_success 'set-up matching pattern tests' '
git tag -a -m test-annotated test-annotated &&
echo >>file &&
test_tick &&
git commit -a -m "one more" &&
git tag test1-lightweight &&
echo >>file &&
test_tick &&
git commit -a -m "yet another" &&
git tag test2-lightweight &&
echo >>file &&
test_tick &&
git commit -a -m "even more"
'
check_describe "test-annotated-3-gHASH" --match="test-*"
check_describe "test1-lightweight-2-gHASH" --tags --match="test1-*"
check_describe "test2-lightweight-1-gHASH" --tags --match="test2-*"
check_describe "test2-lightweight-0-gHASH" --long --tags --match="test2-*" HEAD^
check_describe "test2-lightweight-0-gHASH" --long --tags --match="test1-*" --match="test2-*" HEAD^
check_describe "test2-lightweight-0-gHASH" --long --tags --match="test1-*" --no-match --match="test2-*" HEAD^
check_describe "test1-lightweight-2-gHASH" --long --tags --match="test1-*" --match="test3-*" HEAD
check_describe "test1-lightweight-2-gHASH" --long --tags --match="test3-*" --match="test1-*" HEAD
test_expect_success 'set-up branches' '
git branch branch_A A &&
git branch branch_C c &&
git update-ref refs/remotes/origin/remote_branch_A "A^{commit}" &&
git update-ref refs/remotes/origin/remote_branch_C "c^{commit}" &&
git update-ref refs/original/original_branch_A test-annotated~2
'
check_describe "heads/branch_A-11-gHASH" --all --match="branch_*" --exclude="branch_C" HEAD
check_describe "remotes/origin/remote_branch_A-11-gHASH" --all --match="origin/remote_branch_*" --exclude="origin/remote_branch_C" HEAD
check_describe "original/original_branch_A-6-gHASH" --all test-annotated~1
test_expect_success '--match does not work for other types' '
test_must_fail git describe --all --match="*original_branch_*" test-annotated~1
'
test_expect_success '--exclude does not work for other types' '
R=$(git describe --all --exclude="any_pattern_even_not_matching" test-annotated~1) &&
case "$R" in
*original_branch_A*) echo "fail: Found unknown reference $R with --exclude"
false;;
*) echo ok: Found some known type;;
esac
'
test_expect_success 'name-rev with exact tags' '
echo A >expect &&
tag_object=$(git rev-parse refs/tags/A) &&
git name-rev --tags --name-only $tag_object >actual &&
test_cmp expect actual &&
echo "A^0" >expect &&
tagged_commit=$(git rev-parse "refs/tags/A^0") &&
git name-rev --tags --name-only $tagged_commit >actual &&
test_cmp expect actual
'
test_expect_success 'name-rev --all' '
>expect.unsorted &&
for rev in $(git rev-list --all)
do
git name-rev $rev >>expect.unsorted || return 1
done &&
sort <expect.unsorted >expect &&
git name-rev --all >actual.unsorted &&
sort <actual.unsorted >actual &&
test_cmp expect actual
'
test_expect_success 'name-rev --stdin' '
>expect.unsorted &&
for rev in $(git rev-list --all)
do
name=$(git name-rev --name-only $rev) &&
echo "$rev ($name)" >>expect.unsorted || return 1
done &&
sort <expect.unsorted >expect &&
git rev-list --all | git name-rev --stdin >actual.unsorted &&
sort <actual.unsorted >actual &&
test_cmp expect actual
'
test_expect_success 'describe --contains with the exact tags' '
echo "A^0" >expect &&
tag_object=$(git rev-parse refs/tags/A) &&
git describe --contains $tag_object >actual &&
test_cmp expect actual &&
echo "A^0" >expect &&
tagged_commit=$(git rev-parse "refs/tags/A^0") &&
git describe --contains $tagged_commit >actual &&
test_cmp expect actual
'
test_expect_success 'describe --contains and --match' '
echo "A^0" >expect &&
tagged_commit=$(git rev-parse "refs/tags/A^0") &&
test_must_fail git describe --contains --match="B" $tagged_commit &&
git describe --contains --match="B" --match="A" $tagged_commit >actual &&
test_cmp expect actual
'
test_expect_success 'describe --exclude' '
echo "c~1" >expect &&
tagged_commit=$(git rev-parse "refs/tags/A^0") &&
test_must_fail git describe --contains --match="B" $tagged_commit &&
git describe --contains --match="?" --exclude="A" $tagged_commit >actual &&
test_cmp expect actual
'
test_expect_success 'describe --contains and --no-match' '
echo "A^0" >expect &&
tagged_commit=$(git rev-parse "refs/tags/A^0") &&
git describe --contains --match="B" --no-match $tagged_commit >actual &&
test_cmp expect actual
'
test_expect_success 'setup and absorb a submodule' '
test_create_repo sub1 &&
test_commit -C sub1 initial &&
git submodule add ./sub1 &&
git submodule absorbgitdirs &&
git commit -a -m "add submodule" &&
git describe --dirty >expect &&
git describe --broken >out &&
test_cmp expect out
'
test_expect_success 'describe chokes on severely broken submodules' '
mv .git/modules/sub1/ .git/modules/sub_moved &&
test_must_fail git describe --dirty
'
test_expect_success 'describe ignoring a broken submodule' '
git describe --broken >out &&
grep broken out
'
test_expect_success 'describe with --work-tree ignoring a broken submodule' '
(
cd "$TEST_DIRECTORY" &&
git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe --broken >"$TRASH_DIRECTORY/out"
) &&
test_when_finished "mv .git/modules/sub_moved .git/modules/sub1" &&
grep broken out
'
test_expect_success 'describe a blob at a directly tagged commit' '
echo "make it a unique blob" >file &&
git add file && git commit -m "content in file" &&
git tag -a -m "latest annotated tag" unique-file &&
git describe HEAD:file >actual &&
echo "unique-file:file" >expect &&
test_cmp expect actual
'
test_expect_success 'describe a blob with its first introduction' '
git commit --allow-empty -m "empty commit" &&
git rm file &&
git commit -m "delete blob" &&
git revert HEAD &&
git commit --allow-empty -m "empty commit" &&
git describe HEAD:file >actual &&
echo "unique-file:file" >expect &&
test_cmp expect actual
'
test_expect_success 'describe directly tagged blob' '
git tag test-blob unique-file:file &&
git describe test-blob >actual &&
echo "unique-file:file" >expect &&
# suboptimal: we rather want to see "test-blob"
test_cmp expect actual
'
test_expect_success 'describe tag object' '
git tag test-blob-1 -a -m msg unique-file:file &&
test_must_fail git describe test-blob-1 2>actual &&
test_i18ngrep "fatal: test-blob-1 is neither a commit nor blob" actual
'
test_expect_success ULIMIT_STACK_SIZE 'name-rev works in a deep repo' '
i=1 &&
while test $i -lt 8000
do
echo "commit refs/heads/main
committer A U Thor <author@example.com> $((1000000000 + $i * 100)) +0200
data <<EOF
commit #$i
EOF" &&
if test $i = 1
then
echo "from refs/heads/main^0"
fi &&
i=$(($i + 1)) || return 1
done | git fast-import &&
git checkout main &&
git tag far-far-away HEAD^ &&
echo "HEAD~4000 tags/far-far-away~3999" >expect &&
git name-rev HEAD~4000 >actual &&
test_cmp expect actual &&
run_with_limited_stack git name-rev HEAD~4000 >actual &&
test_cmp expect actual
'
test_expect_success ULIMIT_STACK_SIZE 'describe works in a deep repo' '
git tag -f far-far-away HEAD~7999 &&
echo "far-far-away" >expect &&
git describe --tags --abbrev=0 HEAD~4000 >actual &&
test_cmp expect actual &&
run_with_limited_stack git describe --tags --abbrev=0 HEAD~4000 >actual &&
test_cmp expect actual
'
check_describe tags/A --all A
check_describe tags/c --all c
check_describe heads/branch_A --all --match='branch_*' branch_A
test_expect_success 'describe complains about tree object' '
test_must_fail git describe HEAD^{tree}
'
test_expect_success 'describe complains about missing object' '
test_must_fail git describe $ZERO_OID
'
test_expect_success 'name-rev a rev shortly after epoch' '
test_when_finished "git checkout main" &&
git checkout --orphan no-timestamp-underflow &&
# Any date closer to epoch than the CUTOFF_DATE_SLOP constant
# in builtin/name-rev.c.
GIT_COMMITTER_DATE="@1234 +0000" \
git commit -m "committer date shortly after epoch" &&
old_commit_oid=$(git rev-parse HEAD) &&
echo "$old_commit_oid no-timestamp-underflow" >expect &&
git name-rev $old_commit_oid >actual &&
test_cmp expect actual
'
# A--------------main
# \ /
# \----------M2
# \ /
# \---M1-C
# \ /
# B
test_expect_success 'name-rev covers all conditions while looking at parents' '
git init repo &&
(
cd repo &&
echo A >file &&
git add file &&
git commit -m A &&
A=$(git rev-parse HEAD) &&
git checkout --detach &&
echo B >file &&
git commit -m B file &&
B=$(git rev-parse HEAD) &&
git checkout $A &&
git merge --no-ff $B && # M1
echo C >file &&
git commit -m C file &&
git checkout $A &&
git merge --no-ff HEAD@{1} && # M2
git checkout main &&
git merge --no-ff HEAD@{1} &&
echo "$B main^2^2~1^2" >expect &&
git name-rev $B >actual &&
test_cmp expect actual
)
'
# B
# o
# \
# o-----o---o----x
# A
#
test_expect_success 'setup: describe commits with disjoint bases' '
git init disjoint1 &&
(
cd disjoint1 &&
echo o >> file && git add file && git commit -m o &&
echo A >> file && git add file && git commit -m A &&
git tag A -a -m A &&
echo o >> file && git add file && git commit -m o &&
git checkout --orphan branch && rm file &&
echo B > file2 && git add file2 && git commit -m B &&
git tag B -a -m B &&
git merge --no-ff --allow-unrelated-histories main -m x
)
'
check_describe -C disjoint1 "A-3-gHASH" HEAD
# B
# o---o---o------------.
# \
# o---o---x
# A
#
test_expect_success 'setup: describe commits with disjoint bases 2' '
git init disjoint2 &&
(
cd disjoint2 &&
echo A >> file && git add file && GIT_COMMITTER_DATE="2020-01-01 18:00" git commit -m A &&
git tag A -a -m A &&
echo o >> file && git add file && GIT_COMMITTER_DATE="2020-01-01 18:01" git commit -m o &&
git checkout --orphan branch &&
echo o >> file2 && git add file2 && GIT_COMMITTER_DATE="2020-01-01 15:00" git commit -m o &&
echo o >> file2 && git add file2 && GIT_COMMITTER_DATE="2020-01-01 15:01" git commit -m o &&
echo B >> file2 && git add file2 && GIT_COMMITTER_DATE="2020-01-01 15:02" git commit -m B &&
git tag B -a -m B &&
git merge --no-ff --allow-unrelated-histories main -m x
)
'
check_describe -C disjoint2 "B-3-gHASH" HEAD
test_done
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