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git-commit-vandalism/t/t6120-describe.sh
Ramsay Jones 21dac1deee test-lib: don't use ulimit in test prerequisites on cygwin 
On cygwin (and MinGW), the 'ulimit' built-in bash command does not have
the desired effect of limiting the resources of new processes, at least
for the stack and file descriptors. However, it always returns success
and leads to several test prerequisites being erroneously set to true.

Add a check for cygwin and MinGW to the prerequisite expressions, using
a 'test_have_prereq !MINGW,!CYGWIN' clause, to guard against using ulimit.
This affects the prerequisite expressions for the ULIMIT_STACK_SIZE,
CMDLINE_LIMIT and ULIMIT_FILE_DESCRIPTORS prerequisites.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-15 11:52:00 +09:00

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#!/bin/sh
test_description='test describe
B
.--------------o----o----o----x
/ / /
o----o----o----o----o----. /
\ A c /
.------------o---o---o
D,R e
'
. ./test-lib.sh
check_describe () {
expect="$1"
shift
R=$(git describe "$@" 2>err.actual)
S=$?
cat err.actual >&3
test_expect_success "describe $*" '
test $S = 0 &&
case "$R" in
$expect) echo happy ;;
*) echo "Oops - $R is not $expect";
false ;;
esac
'
}
test_expect_success setup '
test_tick &&
echo one >file && git add file && git commit -m initial &&
one=$(git rev-parse HEAD) &&
git describe --always HEAD &&
test_tick &&
echo two >file && git add file && git commit -m second &&
two=$(git rev-parse HEAD) &&
test_tick &&
echo three >file && git add file && git commit -m third &&
test_tick &&
echo A >file && git add file && git commit -m A &&
test_tick &&
git tag -a -m A A &&
test_tick &&
echo c >file && git add file && git commit -m c &&
test_tick &&
git tag c &&
git reset --hard $two &&
test_tick &&
echo B >side && git add side && git commit -m B &&
test_tick &&
git tag -a -m B B &&
test_tick &&
git merge -m Merged c &&
merged=$(git rev-parse HEAD) &&
git reset --hard $two &&
test_tick &&
echo D >another && git add another && git commit -m D &&
test_tick &&
git tag -a -m D D &&
test_tick &&
git tag -a -m R R &&
test_tick &&
echo DD >another && git commit -a -m another &&
test_tick &&
git tag e &&
test_tick &&
echo DDD >another && git commit -a -m "yet another" &&
test_tick &&
git merge -m Merged $merged &&
test_tick &&
echo X >file && echo X >side && git add file side &&
git commit -m x
'
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/master --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
'
: >err.expect
check_describe A --all A^0
test_expect_success 'no warning was displayed for A' '
test_cmp err.expect 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 'A' is really 'Q' here
EOF
check_describe A-* HEAD
test_expect_success 'warning was displayed for Q' '
test_i18ncmp err.expect err.actual
'
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
check_describe "A-*[0-9a-f]" --dirty
test_expect_success 'set-up dirty work tree' '
echo >>file
'
check_describe "A-*[0-9a-f]-dirty" --dirty
check_describe "A-*[0-9a-f].mod" --dirty=.mod
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 "test1-lightweight-*" --long --tags --match="test1-*" --match="test2-*" HEAD^
check_describe "test2-lightweight-*" --long --tags --match="test1-*" --no-match --match="test2-*" HEAD^
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 borken submodule' '
git describe --broken >out &&
test_when_finished "mv .git/modules/sub_moved .git/modules/sub1" &&
grep broken out
'
test_expect_failure ULIMIT_STACK_SIZE 'name-rev works in a deep repo' '
i=1 &&
while test $i -lt 8000
do
echo "commit refs/heads/master
committer A U Thor <author@example.com> $((1000000000 + $i * 100)) +0200
data <<EOF
commit #$i
EOF"
test $i = 1 && echo "from refs/heads/master^0"
i=$(($i + 1))
done | git fast-import &&
git checkout master &&
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
'
test_done
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