git/t/t6021-rev-list-exclude-hidden.sh
Eric Wong c6ce27ab08 fetch: support hideRefs to speed up connectivity checks
With roughly 800 remotes all fetching into their own
refs/remotes/$REMOTE/* island, the connectivity check[1] gets
expensive for each fetch on systems which lack sufficient RAM to
cache objects.

To do a no-op fetch on one $REMOTE out of hundreds, hideRefs now
allows the no-op fetch to take ~30 seconds instead of ~20 minutes
on a noisy, RAM-constrained machine (localhost, so no network latency):

   git -c fetch.hideRefs=refs \
	-c fetch.hideRefs='!refs/remotes/$REMOTE/' \
	fetch $REMOTE

[1] `git rev-list --objects --stdin --not --all --quiet --alternate-refs'

Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-27 09:27:03 -08:00

164 lines
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Executable file

#!/bin/sh
test_description='git rev-list --exclude-hidden test'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'setup' '
test_commit_bulk --id=commit --ref=refs/heads/branch 1 &&
COMMIT=$(git rev-parse refs/heads/branch) &&
test_commit_bulk --id=tag --ref=refs/tags/lightweight 1 &&
TAG=$(git rev-parse refs/tags/lightweight) &&
test_commit_bulk --id=hidden --ref=refs/hidden/commit 1 &&
HIDDEN=$(git rev-parse refs/hidden/commit) &&
test_commit_bulk --id=namespace --ref=refs/namespaces/namespace/refs/namespaced/commit 1 &&
NAMESPACE=$(git rev-parse refs/namespaces/namespace/refs/namespaced/commit)
'
test_expect_success 'invalid section' '
echo "fatal: unsupported section for hidden refs: unsupported" >expected &&
test_must_fail git rev-list --exclude-hidden=unsupported 2>err &&
test_cmp expected err
'
for section in fetch receive uploadpack
do
test_expect_success "$section: passed multiple times" '
echo "fatal: --exclude-hidden= passed more than once" >expected &&
test_must_fail git rev-list --exclude-hidden=$section --exclude-hidden=$section 2>err &&
test_cmp expected err
'
test_expect_success "$section: without hiddenRefs" '
git rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$HIDDEN
$TAG
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: hidden via transfer.hideRefs" '
git -c transfer.hideRefs=refs/hidden/ rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$TAG
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: hidden via $section.hideRefs" '
git -c $section.hideRefs=refs/hidden/ rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$TAG
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: respects both transfer.hideRefs and $section.hideRefs" '
git -c transfer.hideRefs=refs/tags/ -c $section.hideRefs=refs/hidden/ rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: negation without hidden refs marks everything as uninteresting" '
git rev-list --all --exclude-hidden=$section --not --all >out &&
test_must_be_empty out
'
test_expect_success "$section: negation with hidden refs marks them as interesting" '
git -c transfer.hideRefs=refs/hidden/ rev-list --all --exclude-hidden=$section --not --all >out &&
cat >expected <<-EOF &&
$HIDDEN
EOF
test_cmp expected out
'
test_expect_success "$section: hidden refs and excludes work together" '
git -c transfer.hideRefs=refs/hidden/ rev-list --exclude=refs/tags/* --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: excluded hidden refs get reset" '
git -c transfer.hideRefs=refs/ rev-list --exclude-hidden=$section --all --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$HIDDEN
$TAG
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: excluded hidden refs can be used with multiple pseudo-refs" '
git -c transfer.hideRefs=refs/ rev-list --exclude-hidden=$section --all --exclude-hidden=$section --all >out &&
test_must_be_empty out
'
test_expect_success "$section: works with --glob" '
git -c transfer.hideRefs=refs/hidden/ rev-list --exclude-hidden=$section --glob=refs/h* >out &&
cat >expected <<-EOF &&
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: operates on stripped refs by default" '
GIT_NAMESPACE=namespace git -c transfer.hideRefs=refs/namespaced/ rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$HIDDEN
$TAG
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: does not hide namespace by default" '
GIT_NAMESPACE=namespace git -c transfer.hideRefs=refs/namespaces/namespace/ rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$NAMESPACE
$HIDDEN
$TAG
$COMMIT
EOF
test_cmp expected out
'
test_expect_success "$section: can operate on unstripped refs" '
GIT_NAMESPACE=namespace git -c transfer.hideRefs=^refs/namespaces/namespace/ rev-list --exclude-hidden=$section --all >out &&
cat >expected <<-EOF &&
$HIDDEN
$TAG
$COMMIT
EOF
test_cmp expected out
'
for pseudoopt in remotes branches tags
do
test_expect_success "$section: fails with --$pseudoopt" '
test_must_fail git rev-list --exclude-hidden=$section --$pseudoopt 2>err &&
test_i18ngrep "error: --exclude-hidden cannot be used together with --$pseudoopt" err
'
test_expect_success "$section: fails with --$pseudoopt=pattern" '
test_must_fail git rev-list --exclude-hidden=$section --$pseudoopt=pattern 2>err &&
test_i18ngrep "error: --exclude-hidden cannot be used together with --$pseudoopt" err
'
done
done
test_done