t5326: move tests to t/lib-bitmap.sh
In t5326, we have a handful of tests that we would like to run twice: once using the MIDX's new `RIDX` chunk as the source of the reverse-index cache, and once using the separate `.rev` file. But because these tests mutate the state of the underlying repository, and then make assumptions about those mutations occurring in a certain sequence, simply running the tests twice in the same repository is awkward. Instead, extract the core of interesting tests into t/lib-bitmap.sh to prepare for them to be run twice, each in a separate test script. This means that they can each operate on a separate repository, removing any concerns about mutating state. For now, this patch is a strict cut-and-paste of some tests from t5326. The tests which did not move are not interesting with respect to the source of their reverse index data. Signed-off-by: Taylor Blau <me@ttaylorr.com> Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Taylor Blau committed
Jan 25, 2022 at 17:41 UTC
791170fa2b23cfc49ae0e5949b1f301431a6058b
2 files changed
+179
-171
t/lib-bitmap.sh
+177
index 21d0392dda..48a8730a13 100644
--- a/t/lib-bitmap.sh
+++ b/t/lib-bitmap.sh
@@ -1,6 +1,9 @@
# Helpers for scripts testing bitmap functionality; see t5310 for
# example usage.
+objdir=.git/objects
+midx=$objdir/pack/multi-pack-index
+
# Compare a file containing rev-list bitmap traversal output to its non-bitmap
# counterpart. You can't just use test_cmp for this, because the two produce
# subtly different output:
@@ -264,3 +267,177 @@ have_delta () {
midx_checksum () {
test-tool read-midx --checksum "$1"
}
+
+# midx_pack_source <obj>
+midx_pack_source () {
+ test-tool read-midx --show-objects .git/objects | grep "^$1 " | cut -f2
+}
+
+test_rev_exists () {
+ commit="$1"
+
+ test_expect_success 'reverse index exists' '
+ GIT_TRACE2_EVENT=$(pwd)/event.trace \
+ git rev-list --test-bitmap "$commit" &&
+
+ test_path_is_file $midx-$(midx_checksum $objdir).rev &&
+ grep "\"category\":\"load_midx_revindex\",\"key\":\"source\",\"value\":\"rev\"" event.trace
+ '
+}
+
+midx_bitmap_core () {
+ setup_bitmap_history
+
+ test_expect_success 'create single-pack midx with bitmaps' '
+ git repack -ad &&
+ git multi-pack-index write --bitmap &&
+ test_path_is_file $midx &&
+ test_path_is_file $midx-$(midx_checksum $objdir).bitmap
+ '
+
+ test_rev_exists HEAD
+
+ basic_bitmap_tests
+
+ test_expect_success 'create new additional packs' '
+ for i in $(test_seq 1 16)
+ do
+ test_commit "$i" &&
+ git repack -d || return 1
+ done &&
+
+ git checkout -b other2 HEAD~8 &&
+ for i in $(test_seq 1 8)
+ do
+ test_commit "side-$i" &&
+ git repack -d || return 1
+ done &&
+ git checkout second
+ '
+
+ test_expect_success 'create multi-pack midx with bitmaps' '
+ git multi-pack-index write --bitmap &&
+
+ ls $objdir/pack/pack-*.pack >packs &&
+ test_line_count = 25 packs &&
+
+ test_path_is_file $midx &&
+ test_path_is_file $midx-$(midx_checksum $objdir).bitmap
+ '
+
+ test_rev_exists HEAD
+
+ basic_bitmap_tests
+
+ test_expect_success '--no-bitmap is respected when bitmaps exist' '
+ git multi-pack-index write --bitmap &&
+
+ test_commit respect--no-bitmap &&
+ git repack -d &&
+
+ test_path_is_file $midx &&
+ test_path_is_file $midx-$(midx_checksum $objdir).bitmap &&
+
+ git multi-pack-index write --no-bitmap &&
+
+ test_path_is_file $midx &&
+ test_path_is_missing $midx-$(midx_checksum $objdir).bitmap &&
+ test_path_is_missing $midx-$(midx_checksum $objdir).rev
+ '
+
+ test_expect_success 'setup midx with base from later pack' '
+ # Write a and b so that "a" is a delta on top of base "b", since Git
+ # prefers to delete contents out of a base rather than add to a shorter
+ # object.
+ test_seq 1 128 >a &&
+ test_seq 1 130 >b &&
+
+ git add a b &&
+ git commit -m "initial commit" &&
+
+ a=$(git rev-parse HEAD:a) &&
+ b=$(git rev-parse HEAD:b) &&
+
+ # In the first pack, "a" is stored as a delta to "b".
+ p1=$(git pack-objects .git/objects/pack/pack <<-EOF
+ $a
+ $b
+ EOF
+ ) &&
+
+ # In the second pack, "a" is missing, and "b" is not a delta nor base to
+ # any other object.
+ p2=$(git pack-objects .git/objects/pack/pack <<-EOF
+ $b
+ $(git rev-parse HEAD)
+ $(git rev-parse HEAD^{tree})
+ EOF
+ ) &&
+
+ git prune-packed &&
+ # Use the second pack as the preferred source, so that "b" occurs
+ # earlier in the MIDX object order, rendering "a" unusable for pack
+ # reuse.
+ git multi-pack-index write --bitmap --preferred-pack=pack-$p2.idx &&
+
+ have_delta $a $b &&
+ test $(midx_pack_source $a) != $(midx_pack_source $b)
+ '
+
+ rev_list_tests 'full bitmap with backwards delta'
+
+ test_expect_success 'clone with bitmaps enabled' '
+ git clone --no-local --bare . clone-reverse-delta.git &&
+ test_when_finished "rm -fr clone-reverse-delta.git" &&
+
+ git rev-parse HEAD >expect &&
+ git --git-dir=clone-reverse-delta.git rev-parse HEAD >actual &&
+ test_cmp expect actual
+ '
+
+ test_expect_success 'changing the preferred pack does not corrupt bitmaps' '
+ rm -fr repo &&
+ git init repo &&
+ test_when_finished "rm -fr repo" &&
+ (
+ cd repo &&
+
+ test_commit A &&
+ test_commit B &&
+
+ git rev-list --objects --no-object-names HEAD^ >A.objects &&
+ git rev-list --objects --no-object-names HEAD^.. >B.objects &&
+
+ A=$(git pack-objects $objdir/pack/pack <A.objects) &&
+ B=$(git pack-objects $objdir/pack/pack <B.objects) &&
+
+ cat >indexes <<-EOF &&
+ pack-$A.idx
+ pack-$B.idx
+ EOF
+
+ git multi-pack-index write --bitmap --stdin-packs \
+ --preferred-pack=pack-$A.pack <indexes &&
+ git rev-list --test-bitmap A &&
+
+ git multi-pack-index write --bitmap --stdin-packs \
+ --preferred-pack=pack-$B.pack <indexes &&
+ git rev-list --test-bitmap A
+ )
+ '
+}
+
+midx_bitmap_partial_tests () {
+ test_expect_success 'setup partial bitmaps' '
+ test_commit packed &&
+ git repack &&
+ test_commit loose &&
+ git multi-pack-index write --bitmap 2>err &&
+ test_path_is_file $midx &&
+ test_path_is_file $midx-$(midx_checksum $objdir).bitmap
+ '
+
+ test_rev_exists HEAD~
+
+ basic_bitmap_tests HEAD~
+}
t/t5326-multi-pack-bitmaps.sh
+2
-171
index 999740f8c7..100ac90d15 100755
--- a/t/t5326-multi-pack-bitmaps.sh
+++ b/t/t5326-multi-pack-bitmaps.sh
@@ -9,134 +9,7 @@ test_description='exercise basic multi-pack bitmap functionality'
GIT_TEST_MULTI_PACK_INDEX=0
GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0
-objdir=.git/objects
-midx=$objdir/pack/multi-pack-index
-
-# midx_pack_source <obj>
-midx_pack_source () {
- test-tool read-midx --show-objects .git/objects | grep "^$1 " | cut -f2
-}
-
-test_rev_exists () {
- commit="$1"
-
- test_expect_success 'reverse index exists' '
- GIT_TRACE2_EVENT=$(pwd)/event.trace \
- git rev-list --test-bitmap "$commit" &&
-
- test_path_is_file $midx-$(midx_checksum $objdir).rev &&
- grep "\"category\":\"load_midx_revindex\",\"key\":\"source\",\"value\":\"rev\"" event.trace
- '
-}
-
-setup_bitmap_history
-
-test_expect_success 'create single-pack midx with bitmaps' '
- git repack -ad &&
- git multi-pack-index write --bitmap &&
- test_path_is_file $midx &&
- test_path_is_file $midx-$(midx_checksum $objdir).bitmap
-'
-
-test_rev_exists HEAD
-
-basic_bitmap_tests
-
-test_expect_success 'create new additional packs' '
- for i in $(test_seq 1 16)
- do
- test_commit "$i" &&
- git repack -d || return 1
- done &&
-
- git checkout -b other2 HEAD~8 &&
- for i in $(test_seq 1 8)
- do
- test_commit "side-$i" &&
- git repack -d || return 1
- done &&
- git checkout second
-'
-
-test_expect_success 'create multi-pack midx with bitmaps' '
- git multi-pack-index write --bitmap &&
-
- ls $objdir/pack/pack-*.pack >packs &&
- test_line_count = 25 packs &&
-
- test_path_is_file $midx &&
- test_path_is_file $midx-$(midx_checksum $objdir).bitmap
-'
-
-test_rev_exists HEAD
-
-basic_bitmap_tests
-
-test_expect_success '--no-bitmap is respected when bitmaps exist' '
- git multi-pack-index write --bitmap &&
-
- test_commit respect--no-bitmap &&
- git repack -d &&
-
- test_path_is_file $midx &&
- test_path_is_file $midx-$(midx_checksum $objdir).bitmap &&
-
- git multi-pack-index write --no-bitmap &&
-
- test_path_is_file $midx &&
- test_path_is_missing $midx-$(midx_checksum $objdir).bitmap &&
- test_path_is_missing $midx-$(midx_checksum $objdir).rev
-'
-
-test_expect_success 'setup midx with base from later pack' '
- # Write a and b so that "a" is a delta on top of base "b", since Git
- # prefers to delete contents out of a base rather than add to a shorter
- # object.
- test_seq 1 128 >a &&
- test_seq 1 130 >b &&
-
- git add a b &&
- git commit -m "initial commit" &&
-
- a=$(git rev-parse HEAD:a) &&
- b=$(git rev-parse HEAD:b) &&
-
- # In the first pack, "a" is stored as a delta to "b".
- p1=$(git pack-objects .git/objects/pack/pack <<-EOF
- $a
- $b
- EOF
- ) &&
-
- # In the second pack, "a" is missing, and "b" is not a delta nor base to
- # any other object.
- p2=$(git pack-objects .git/objects/pack/pack <<-EOF
- $b
- $(git rev-parse HEAD)
- $(git rev-parse HEAD^{tree})
- EOF
- ) &&
-
- git prune-packed &&
- # Use the second pack as the preferred source, so that "b" occurs
- # earlier in the MIDX object order, rendering "a" unusable for pack
- # reuse.
- git multi-pack-index write --bitmap --preferred-pack=pack-$p2.idx &&
-
- have_delta $a $b &&
- test $(midx_pack_source $a) != $(midx_pack_source $b)
-'
-
-rev_list_tests 'full bitmap with backwards delta'
-
-test_expect_success 'clone with bitmaps enabled' '
- git clone --no-local --bare . clone-reverse-delta.git &&
- test_when_finished "rm -fr clone-reverse-delta.git" &&
-
- git rev-parse HEAD >expect &&
- git --git-dir=clone-reverse-delta.git rev-parse HEAD >actual &&
- test_cmp expect actual
-'
+midx_bitmap_core
bitmap_reuse_tests() {
from=$1
@@ -213,18 +86,7 @@ test_expect_success 'missing object closure fails gracefully' '
)
'
-test_expect_success 'setup partial bitmaps' '
- test_commit packed &&
- git repack &&
- test_commit loose &&
- git multi-pack-index write --bitmap 2>err &&
- test_path_is_file $midx &&
- test_path_is_file $midx-$(midx_checksum $objdir).bitmap
-'
-
-test_rev_exists HEAD~
-
-basic_bitmap_tests HEAD~
+midx_bitmap_partial_tests
test_expect_success 'removing a MIDX clears stale bitmaps' '
rm -fr repo &&
@@ -398,35 +260,4 @@ test_expect_success 'hash-cache values are propagated from pack bitmaps' '
)
'
-test_expect_success 'changing the preferred pack does not corrupt bitmaps' '
- rm -fr repo &&
- git init repo &&
- test_when_finished "rm -fr repo" &&
- (
- cd repo &&
-
- test_commit A &&
- test_commit B &&
-
- git rev-list --objects --no-object-names HEAD^ >A.objects &&
- git rev-list --objects --no-object-names HEAD^.. >B.objects &&
-
- A=$(git pack-objects $objdir/pack/pack <A.objects) &&
- B=$(git pack-objects $objdir/pack/pack <B.objects) &&
-
- cat >indexes <<-EOF &&
- pack-$A.idx
- pack-$B.idx
- EOF
-
- git multi-pack-index write --bitmap --stdin-packs \
- --preferred-pack=pack-$A.pack <indexes &&
- git rev-list --test-bitmap A &&
-
- git multi-pack-index write --bitmap --stdin-packs \
- --preferred-pack=pack-$B.pack <indexes &&
- git rev-list --test-bitmap A
- )
-'
-
test_done