diff options
Diffstat (limited to 't/t5310-pack-bitmaps.sh')
| -rwxr-xr-x | t/t5310-pack-bitmaps.sh | 247 |
1 files changed, 207 insertions, 40 deletions
diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh index 8318781d2b..b02838750e 100755 --- a/t/t5310-pack-bitmaps.sh +++ b/t/t5310-pack-bitmaps.sh @@ -1,7 +1,12 @@ #!/bin/sh test_description='exercise basic bitmap functionality' +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + . ./test-lib.sh +. "$TEST_DIRECTORY"/lib-bundle.sh +. "$TEST_DIRECTORY"/lib-bitmap.sh objpath () { echo ".git/objects/$(echo "$1" | sed -e 's|\(..\)|\1/|')" @@ -20,84 +25,172 @@ has_any () { grep -Ff "$1" "$2" } +# To ensure the logic for "maximal commits" is exercised, make +# the repository a bit more complicated. +# +# other second +# * * +# (99 commits) (99 commits) +# * * +# |\ /| +# | * octo-other octo-second * | +# |/|\_________ ____________/|\| +# | \ \/ __________/ | +# | | ________/\ / | +# * |/ * merge-right * +# | _|__________/ \____________ | +# |/ | \| +# (l1) * * merge-left * (r1) +# | / \________________________ | +# |/ \| +# (l2) * * (r2) +# \___________________________ | +# \| +# * (base) +# +# We only push bits down the first-parent history, which +# makes some of these commits unimportant! +# +# The important part for the maximal commit algorithm is how +# the bitmasks are extended. Assuming starting bit positions +# for second (bit 0) and other (bit 1), the bitmasks at the +# end should be: +# +# second: 1 (maximal, selected) +# other: 01 (maximal, selected) +# (base): 11 (maximal) +# +# This complicated history was important for a previous +# version of the walk that guarantees never walking a +# commit multiple times. That goal might be important +# again, so preserve this complicated case. For now, this +# test will guarantee that the bitmaps are computed +# correctly, even with the repeat calculations. + test_expect_success 'setup repo with moderate-sized history' ' - test_commit_bulk --id=file 100 && + test_commit_bulk --id=file 10 && + git branch -M second && git checkout -b other HEAD~5 && test_commit_bulk --id=side 10 && - git checkout master && - bitmaptip=$(git rev-parse master) && + + # add complicated history setup, including merges and + # ambiguous merge-bases + + git checkout -b merge-left other~2 && + git merge second~2 -m "merge-left" && + + git checkout -b merge-right second~1 && + git merge other~1 -m "merge-right" && + + git checkout -b octo-second second && + git merge merge-left merge-right -m "octopus-second" && + + git checkout -b octo-other other && + git merge merge-left merge-right -m "octopus-other" && + + git checkout other && + git merge octo-other -m "pull octopus" && + + git checkout second && + git merge octo-second -m "pull octopus" && + + # Remove these branches so they are not selected + # as bitmap tips + git branch -D merge-left && + git branch -D merge-right && + git branch -D octo-other && + git branch -D octo-second && + + # add padding to make these merges less interesting + # and avoid having them selected for bitmaps + test_commit_bulk --id=file 100 && + git checkout other && + test_commit_bulk --id=side 100 && + git checkout second && + + bitmaptip=$(git rev-parse second) && blob=$(echo tagged-blob | git hash-object -w --stdin) && git tag tagged-blob $blob && git config repack.writebitmaps true ' test_expect_success 'full repack creates bitmaps' ' - git repack -ad && + GIT_TRACE2_EVENT_NESTING=4 GIT_TRACE2_EVENT="$(pwd)/trace" \ + git repack -ad && ls .git/objects/pack/ | grep bitmap >output && - test_line_count = 1 output + test_line_count = 1 output && + grep "\"key\":\"num_selected_commits\",\"value\":\"106\"" trace && + grep "\"key\":\"num_maximal_commits\",\"value\":\"107\"" trace ' test_expect_success 'rev-list --test-bitmap verifies bitmaps' ' git rev-list --test-bitmap HEAD ' -rev_list_tests() { - state=$1 - - test_expect_success "counting commits via bitmap ($state)" ' - git rev-list --count HEAD >expect && - git rev-list --use-bitmap-index --count HEAD >actual && +rev_list_tests_head () { + test_expect_success "counting commits via bitmap ($state, $branch)" ' + git rev-list --count $branch >expect && + git rev-list --use-bitmap-index --count $branch >actual && test_cmp expect actual ' - test_expect_success "counting partial commits via bitmap ($state)" ' - git rev-list --count HEAD~5..HEAD >expect && - git rev-list --use-bitmap-index --count HEAD~5..HEAD >actual && + test_expect_success "counting partial commits via bitmap ($state, $branch)" ' + git rev-list --count $branch~5..$branch >expect && + git rev-list --use-bitmap-index --count $branch~5..$branch >actual && test_cmp expect actual ' - test_expect_success "counting commits with limit ($state)" ' - git rev-list --count -n 1 HEAD >expect && - git rev-list --use-bitmap-index --count -n 1 HEAD >actual && + test_expect_success "counting commits with limit ($state, $branch)" ' + git rev-list --count -n 1 $branch >expect && + git rev-list --use-bitmap-index --count -n 1 $branch >actual && test_cmp expect actual ' - test_expect_success "counting non-linear history ($state)" ' - git rev-list --count other...master >expect && - git rev-list --use-bitmap-index --count other...master >actual && + test_expect_success "counting non-linear history ($state, $branch)" ' + git rev-list --count other...second >expect && + git rev-list --use-bitmap-index --count other...second >actual && test_cmp expect actual ' - test_expect_success "counting commits with limiting ($state)" ' - git rev-list --count HEAD -- 1.t >expect && - git rev-list --use-bitmap-index --count HEAD -- 1.t >actual && + test_expect_success "counting commits with limiting ($state, $branch)" ' + git rev-list --count $branch -- 1.t >expect && + git rev-list --use-bitmap-index --count $branch -- 1.t >actual && test_cmp expect actual ' - test_expect_success "counting objects via bitmap ($state)" ' - git rev-list --count --objects HEAD >expect && - git rev-list --use-bitmap-index --count --objects HEAD >actual && + test_expect_success "counting objects via bitmap ($state, $branch)" ' + git rev-list --count --objects $branch >expect && + git rev-list --use-bitmap-index --count --objects $branch >actual && test_cmp expect actual ' - test_expect_success "enumerate commits ($state)" ' - git rev-list --use-bitmap-index HEAD >actual && - git rev-list HEAD >expect && + test_expect_success "enumerate commits ($state, $branch)" ' + git rev-list --use-bitmap-index $branch >actual && + git rev-list $branch >expect && test_bitmap_traversal --no-confirm-bitmaps expect actual ' - test_expect_success "enumerate --objects ($state)" ' - git rev-list --objects --use-bitmap-index HEAD >actual && - git rev-list --objects HEAD >expect && + test_expect_success "enumerate --objects ($state, $branch)" ' + git rev-list --objects --use-bitmap-index $branch >actual && + git rev-list --objects $branch >expect && test_bitmap_traversal expect actual ' - test_expect_success "bitmap --objects handles non-commit objects ($state)" ' - git rev-list --objects --use-bitmap-index HEAD tagged-blob >actual && + test_expect_success "bitmap --objects handles non-commit objects ($state, $branch)" ' + git rev-list --objects --use-bitmap-index $branch tagged-blob >actual && grep $blob actual ' } +rev_list_tests () { + state=$1 + + for branch in "second" "other" + do + rev_list_tests_head + done +} + rev_list_tests 'full bitmap' test_expect_success 'clone from bitmapped repository' ' @@ -128,7 +221,7 @@ test_expect_success 'setup further non-bitmapped commits' ' rev_list_tests 'partial bitmap' test_expect_success 'fetch (partial bitmap)' ' - git --git-dir=clone.git fetch origin master:master && + git --git-dir=clone.git fetch origin second:second && git rev-parse HEAD >expect && git --git-dir=clone.git rev-parse HEAD >actual && test_cmp expect actual @@ -230,7 +323,7 @@ test_expect_success 'full repack, reusing previous bitmaps' ' ' test_expect_success 'fetch (full bitmap)' ' - git --git-dir=clone.git fetch origin master:master && + git --git-dir=clone.git fetch origin second:second && git rev-parse HEAD >expect && git --git-dir=clone.git rev-parse HEAD >actual && test_cmp expect actual @@ -277,7 +370,7 @@ test_expect_success 'pack with missing parent' ' git pack-objects --stdout --revs <revs >/dev/null ' -test_expect_success JGIT 'we can read jgit bitmaps' ' +test_expect_success JGIT,SHA1 'we can read jgit bitmaps' ' git clone --bare . compat-jgit.git && ( cd compat-jgit.git && @@ -287,7 +380,7 @@ test_expect_success JGIT 'we can read jgit bitmaps' ' ) ' -test_expect_success JGIT 'jgit can read our bitmaps' ' +test_expect_success JGIT,SHA1 'jgit can read our bitmaps' ' git clone --bare . compat-us.git && ( cd compat-us.git && @@ -343,7 +436,20 @@ test_expect_success 'pack reuse respects --incremental' ' test_must_be_empty actual ' -test_expect_success 'truncated bitmap fails gracefully' ' +test_expect_success 'truncated bitmap fails gracefully (ewah)' ' + test_config pack.writebitmaphashcache false && + git repack -ad && + git rev-list --use-bitmap-index --count --all >expect && + bitmap=$(ls .git/objects/pack/*.bitmap) && + test_when_finished "rm -f $bitmap" && + test_copy_bytes 256 <$bitmap >$bitmap.tmp && + mv -f $bitmap.tmp $bitmap && + git rev-list --use-bitmap-index --count --all >actual 2>stderr && + test_cmp expect actual && + test_i18ngrep corrupt.ewah.bitmap stderr +' + +test_expect_success 'truncated bitmap fails gracefully (cache)' ' git repack -ad && git rev-list --use-bitmap-index --count --all >expect && bitmap=$(ls .git/objects/pack/*.bitmap) && @@ -352,7 +458,30 @@ test_expect_success 'truncated bitmap fails gracefully' ' mv -f $bitmap.tmp $bitmap && git rev-list --use-bitmap-index --count --all >actual 2>stderr && test_cmp expect actual && - test_i18ngrep corrupt stderr + test_i18ngrep corrupted.bitmap.index stderr +' + +test_expect_success 'enumerating progress counts pack-reused objects' ' + count=$(git rev-list --objects --all --count) && + git repack -adb && + + # check first with only reused objects; confirm that our progress + # showed the right number, and also that we did pack-reuse as expected. + # Check only the final "done" line of the meter (there may be an + # arbitrary number of intermediate lines ending with CR). + GIT_PROGRESS_DELAY=0 \ + git pack-objects --all --stdout --progress \ + </dev/null >/dev/null 2>stderr && + grep "Enumerating objects: $count, done" stderr && + grep "pack-reused $count" stderr && + + # now the same but with one non-reused object + git commit --allow-empty -m "an extra commit object" && + GIT_PROGRESS_DELAY=0 \ + git pack-objects --all --stdout --progress \ + </dev/null >/dev/null 2>stderr && + grep "Enumerating objects: $((count+1)), done" stderr && + grep "pack-reused $count" stderr ' # have_delta <obj> <expected_base> @@ -448,4 +577,42 @@ test_expect_success 'fetch with bitmaps can reuse old base' ' ) ' +test_expect_success 'pack.preferBitmapTips' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + # create enough commits that not all are receive bitmap + # coverage even if they are all at the tip of some reference. + test_commit_bulk --message="%s" 103 && + + git rev-list HEAD >commits.raw && + sort <commits.raw >commits && + + git log --format="create refs/tags/%s %H" HEAD >refs && + git update-ref --stdin <refs && + + git repack -adb && + test-tool bitmap list-commits | sort >bitmaps && + + # remember which commits did not receive bitmaps + comm -13 bitmaps commits >before && + test_file_not_empty before && + + # mark the commits which did not receive bitmaps as preferred, + # and generate the bitmap again + perl -pe "s{^}{create refs/tags/include/$. }" <before | + git update-ref --stdin && + git -c pack.preferBitmapTips=refs/tags/include repack -adb && + + # finally, check that the commit(s) without bitmap coverage + # are not the same ones as before + test-tool bitmap list-commits | sort >bitmaps && + comm -13 bitmaps commits >after && + + ! test_cmp before after + ) +' + test_done |