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git/t/t6120-describe.sh
Ævar Arnfjörð Bjarmason 2df546e17f describe tests: improve test for --work-tree & --dirty 
Improve tests added in 9f67d2e827 (Teach "git describe" --dirty
option, 2009-10-21) and 2ed5c8e174 (describe: setup working tree for
--dirty, 2019-02-03) so that they make sense in combination with each
other.

The "check_describe" being removed here was the earlier test, we then
later added these --work-tree tests which really just wanted to check
if we got the exact same output from "describe", but the test wasn't
structured to test for that.

Let's change it to do that, which both improves test coverage and
makes it more obvious what's going on here.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-05-11 12:48:09 +09:00

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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 () {
expect="$1"
shift
describe_opts="$@"
test_expect_success "describe $describe_opts" '
R=$(git describe $describe_opts 2>err.actual) &&
case "$R" in
$expect) echo happy ;;
*) echo "Oops - $R is not $expect" &&
false ;;
esac
'
}
test_expect_success setup '
test_commit initial file one &&
test_commit second file two &&
test_commit third file three &&
test_commit --annotate A file A &&
test_commit c file c &&
git reset --hard second &&
test_commit --annotate B side B &&
test_tick &&
git merge -m Merged c &&
merged=$(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 $merged &&
test_commit --no-tag x file
'
check_describe A-* HEAD
check_describe A-* HEAD^
check_describe R-* HEAD^^
check_describe A-* HEAD^^2
check_describe B HEAD^^2^
check_describe R-* HEAD^^^
check_describe c-* --tags HEAD
check_describe c-* --tags HEAD^
check_describe e-* --tags HEAD^^
check_describe c-* --tags HEAD^^2
check_describe B --tags HEAD^^2^
check_describe e --tags HEAD^^^
check_describe heads/main --all HEAD
check_describe tags/c-* --all HEAD^
check_describe tags/e --all HEAD^^^
check_describe B-0-* --long HEAD^^2^
check_describe A-3-* --long HEAD^^2
check_describe c-7-* --tags
check_describe e-3-* --first-parent --tags
test_expect_success 'describe --contains defaults to HEAD without commit-ish' '
echo "A^0" >expect &&
git checkout A &&
test_when_finished "git checkout -" &&
git describe --contains >actual &&
test_cmp expect actual
'
check_describe tags/A --all A^0
test_expect_success 'no warning was displayed for A' '
test_must_be_empty err.actual
'
test_expect_success 'rename tag A to Q locally' '
mv .git/refs/tags/A .git/refs/tags/Q
'
cat - >err.expect <<EOF
warning: tag 'Q' is externally known as 'A'
EOF
check_describe A-* HEAD
test_expect_success 'warning was displayed for Q' '
test_cmp err.expect err.actual
'
test_expect_success 'misnamed annotated tag forces long output' '
description=$(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]*$"
'
test_expect_success 'rename tag Q back to A' '
mv .git/refs/tags/Q .git/refs/tags/A
'
test_expect_success 'pack tag refs' 'git pack-refs'
check_describe A-* HEAD
test_expect_success 'describe works from outside repo using --git-dir' '
git clone --bare "$TRASH_DIRECTORY" "$TRASH_DIRECTORY/bare" &&
git --git-dir "$TRASH_DIRECTORY/bare" describe >out &&
grep -E "^A-[1-9][0-9]?-g[0-9a-f]+$" out
'
check_describe "A-*[0-9a-f]" --dirty
test_expect_success 'describe --dirty with --work-tree' '
(
cd "$TEST_DIRECTORY" &&
git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe --dirty >"$TRASH_DIRECTORY/out"
) &&
grep -E "^A-[1-9][0-9]?-g[0-9a-f]+$" 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-[1-9][0-9]?-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 >"$TRASH_DIRECTORY/out"
) &&
grep -E "^A-[1-9][0-9]?-g[0-9a-f]+.mod$" 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-*" --match="test-*"
check_describe "test1-lightweight-*" --tags --match="test1-*"
check_describe "test2-lightweight-*" --tags --match="test2-*"
check_describe "test2-lightweight-*" --long --tags --match="test2-*" HEAD^
check_describe "test2-lightweight-*" --long --tags --match="test1-*" --match="test2-*" HEAD^
check_describe "test2-lightweight-*" --long --tags --match="test1-*" --no-match --match="test2-*" HEAD^
check_describe "test1-lightweight-*" --long --tags --match="test1-*" --match="test3-*" HEAD
check_describe "test1-lightweight-*" --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*" --all --match="branch_*" --exclude="branch_C" HEAD
check_describe "remotes/origin/remote_branch_A*" --all --match="origin/remote_branch_*" --exclude="origin/remote_branch_C" HEAD
check_describe "original/original_branch_A*" --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
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 ($name)" >>expect.unsorted
done &&
sort <expect.unsorted >expect &&
git rev-list --all | git name-rev --stdin >actual.unsorted &&
sort <actual.unsorted >actual &&
test_cmp expect actual
'
test_expect_success 'describe --contains with the exact tags' '
echo "A^0" >expect &&
tag_object=$(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"
test $i = 1 && echo "from refs/heads/main^0"
i=$(($i + 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 '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 "A-3-*" HEAD
)
'
# B
# o---o---o------------.
# \
# o---o---x
# A
#
test_expect_success '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 "B-3-*" HEAD
)
'
test_done
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