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27d7c8599b
Prepare tests not to be affected by the name of the default branch "git init" creates. * js/default-branch-name-tests-final-stretch: (28 commits) tests: drop prereq `PREPARE_FOR_MAIN_BRANCH` where no longer needed t99*: adjust the references to the default branch name "main" tests(git-p4): transition to the default branch name `main` t9[5-7]*: adjust the references to the default branch name "main" t9[0-4]*: adjust the references to the default branch name "main" t8*: adjust the references to the default branch name "main" t7[5-9]*: adjust the references to the default branch name "main" t7[0-4]*: adjust the references to the default branch name "main" t6[4-9]*: adjust the references to the default branch name "main" t64*: preemptively adjust alignment to prepare for `master` -> `main` t6[0-3]*: adjust the references to the default branch name "main" t5[6-9]*: adjust the references to the default branch name "main" t55[4-9]*: adjust the references to the default branch name "main" t55[23]*: adjust the references to the default branch name "main" t551*: adjust the references to the default branch name "main" t550*: adjust the references to the default branch name "main" t5503: prepare aligned comment for replacing `master` with `main` t5[0-4]*: adjust the references to the default branch name "main" t5323: prepare centered comment for `master` -> `main` t4*: adjust the references to the default branch name "main" ...
555 lines
18 KiB
Bash
Executable file
555 lines
18 KiB
Bash
Executable file
#!/bin/sh
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test_description='exercise basic bitmap functionality'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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objpath () {
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echo ".git/objects/$(echo "$1" | sed -e 's|\(..\)|\1/|')"
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}
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# show objects present in pack ($1 should be associated *.idx)
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list_packed_objects () {
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git show-index <"$1" >object-list &&
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cut -d' ' -f2 object-list
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}
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# has_any pattern-file content-file
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# tests whether content-file has any entry from pattern-file with entries being
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# whole lines.
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has_any () {
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grep -Ff "$1" "$2"
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}
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# To ensure the logic for "maximal commits" is exercised, make
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# the repository a bit more complicated.
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#
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# other second
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# * *
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# (99 commits) (99 commits)
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# * *
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# |\ /|
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# | * octo-other octo-second * |
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# |/|\_________ ____________/|\|
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# | \ \/ __________/ |
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# | | ________/\ / |
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# * |/ * merge-right *
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# | _|__________/ \____________ |
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# |/ | \|
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# (l1) * * merge-left * (r1)
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# | / \________________________ |
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# |/ \|
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# (l2) * * (r2)
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# \___________________________ |
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# \|
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# * (base)
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#
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# We only push bits down the first-parent history, which
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# makes some of these commits unimportant!
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#
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# The important part for the maximal commit algorithm is how
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# the bitmasks are extended. Assuming starting bit positions
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# for second (bit 0) and other (bit 1), the bitmasks at the
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# end should be:
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#
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# second: 1 (maximal, selected)
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# other: 01 (maximal, selected)
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# (base): 11 (maximal)
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#
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# This complicated history was important for a previous
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# version of the walk that guarantees never walking a
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# commit multiple times. That goal might be important
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# again, so preserve this complicated case. For now, this
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# test will guarantee that the bitmaps are computed
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# correctly, even with the repeat calculations.
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test_expect_success 'setup repo with moderate-sized history' '
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test_commit_bulk --id=file 10 &&
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git branch -M second &&
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git checkout -b other HEAD~5 &&
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test_commit_bulk --id=side 10 &&
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# add complicated history setup, including merges and
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# ambiguous merge-bases
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git checkout -b merge-left other~2 &&
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git merge second~2 -m "merge-left" &&
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git checkout -b merge-right second~1 &&
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git merge other~1 -m "merge-right" &&
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git checkout -b octo-second second &&
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git merge merge-left merge-right -m "octopus-second" &&
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git checkout -b octo-other other &&
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git merge merge-left merge-right -m "octopus-other" &&
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git checkout other &&
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git merge octo-other -m "pull octopus" &&
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git checkout second &&
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git merge octo-second -m "pull octopus" &&
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# Remove these branches so they are not selected
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# as bitmap tips
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git branch -D merge-left &&
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git branch -D merge-right &&
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git branch -D octo-other &&
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git branch -D octo-second &&
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# add padding to make these merges less interesting
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# and avoid having them selected for bitmaps
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test_commit_bulk --id=file 100 &&
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git checkout other &&
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test_commit_bulk --id=side 100 &&
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git checkout second &&
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bitmaptip=$(git rev-parse second) &&
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blob=$(echo tagged-blob | git hash-object -w --stdin) &&
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git tag tagged-blob $blob &&
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git config repack.writebitmaps true
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'
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test_expect_success 'full repack creates bitmaps' '
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GIT_TRACE2_EVENT_NESTING=4 GIT_TRACE2_EVENT="$(pwd)/trace" \
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git repack -ad &&
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ls .git/objects/pack/ | grep bitmap >output &&
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test_line_count = 1 output &&
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grep "\"key\":\"num_selected_commits\",\"value\":\"106\"" trace &&
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grep "\"key\":\"num_maximal_commits\",\"value\":\"107\"" trace
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'
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test_expect_success 'rev-list --test-bitmap verifies bitmaps' '
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git rev-list --test-bitmap HEAD
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'
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rev_list_tests_head () {
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test_expect_success "counting commits via bitmap ($state, $branch)" '
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git rev-list --count $branch >expect &&
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git rev-list --use-bitmap-index --count $branch >actual &&
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test_cmp expect actual
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'
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test_expect_success "counting partial commits via bitmap ($state, $branch)" '
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git rev-list --count $branch~5..$branch >expect &&
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git rev-list --use-bitmap-index --count $branch~5..$branch >actual &&
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test_cmp expect actual
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'
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test_expect_success "counting commits with limit ($state, $branch)" '
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git rev-list --count -n 1 $branch >expect &&
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git rev-list --use-bitmap-index --count -n 1 $branch >actual &&
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test_cmp expect actual
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'
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test_expect_success "counting non-linear history ($state, $branch)" '
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git rev-list --count other...second >expect &&
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git rev-list --use-bitmap-index --count other...second >actual &&
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test_cmp expect actual
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'
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test_expect_success "counting commits with limiting ($state, $branch)" '
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git rev-list --count $branch -- 1.t >expect &&
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git rev-list --use-bitmap-index --count $branch -- 1.t >actual &&
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test_cmp expect actual
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'
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test_expect_success "counting objects via bitmap ($state, $branch)" '
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git rev-list --count --objects $branch >expect &&
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git rev-list --use-bitmap-index --count --objects $branch >actual &&
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test_cmp expect actual
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'
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test_expect_success "enumerate commits ($state, $branch)" '
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git rev-list --use-bitmap-index $branch >actual &&
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git rev-list $branch >expect &&
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test_bitmap_traversal --no-confirm-bitmaps expect actual
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'
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test_expect_success "enumerate --objects ($state, $branch)" '
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git rev-list --objects --use-bitmap-index $branch >actual &&
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git rev-list --objects $branch >expect &&
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test_bitmap_traversal expect actual
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'
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test_expect_success "bitmap --objects handles non-commit objects ($state, $branch)" '
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git rev-list --objects --use-bitmap-index $branch tagged-blob >actual &&
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grep $blob actual
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'
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}
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rev_list_tests () {
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state=$1
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for branch in "second" "other"
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do
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rev_list_tests_head
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done
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}
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rev_list_tests 'full bitmap'
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test_expect_success 'clone from bitmapped repository' '
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git clone --no-local --bare . clone.git &&
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git rev-parse HEAD >expect &&
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git --git-dir=clone.git rev-parse HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'partial clone from bitmapped repository' '
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test_config uploadpack.allowfilter true &&
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git clone --no-local --bare --filter=blob:none . partial-clone.git &&
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(
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cd partial-clone.git &&
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pack=$(echo objects/pack/*.pack) &&
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git verify-pack -v "$pack" >have &&
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awk "/blob/ { print \$1 }" <have >blobs &&
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# we expect this single blob because of the direct ref
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git rev-parse refs/tags/tagged-blob >expect &&
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test_cmp expect blobs
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)
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'
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test_expect_success 'setup further non-bitmapped commits' '
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test_commit_bulk --id=further 10
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'
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rev_list_tests 'partial bitmap'
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test_expect_success 'fetch (partial bitmap)' '
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git --git-dir=clone.git fetch origin second:second &&
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git rev-parse HEAD >expect &&
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git --git-dir=clone.git rev-parse HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'incremental repack fails when bitmaps are requested' '
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test_commit more-1 &&
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test_must_fail git repack -d 2>err &&
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test_i18ngrep "Incremental repacks are incompatible with bitmap" err
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'
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test_expect_success 'incremental repack can disable bitmaps' '
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test_commit more-2 &&
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git repack -d --no-write-bitmap-index
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'
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test_expect_success 'pack-objects respects --local (non-local loose)' '
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git init --bare alt.git &&
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echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
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echo content1 >file1 &&
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# non-local loose object which is not present in bitmapped pack
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altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
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# non-local loose object which is also present in bitmapped pack
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git cat-file blob $blob | GIT_DIR=alt.git git hash-object -w --stdin &&
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git add file1 &&
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test_tick &&
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git commit -m commit_file1 &&
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echo HEAD | git pack-objects --local --stdout --revs >1.pack &&
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git index-pack 1.pack &&
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list_packed_objects 1.idx >1.objects &&
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printf "%s\n" "$altblob" "$blob" >nonlocal-loose &&
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! has_any nonlocal-loose 1.objects
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'
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test_expect_success 'pack-objects respects --honor-pack-keep (local non-bitmapped pack)' '
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echo content2 >file2 &&
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blob2=$(git hash-object -w file2) &&
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git add file2 &&
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test_tick &&
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git commit -m commit_file2 &&
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printf "%s\n" "$blob2" "$bitmaptip" >keepobjects &&
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pack2=$(git pack-objects pack2 <keepobjects) &&
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mv pack2-$pack2.* .git/objects/pack/ &&
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>.git/objects/pack/pack2-$pack2.keep &&
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rm $(objpath $blob2) &&
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echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >2a.pack &&
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git index-pack 2a.pack &&
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list_packed_objects 2a.idx >2a.objects &&
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! has_any keepobjects 2a.objects
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'
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test_expect_success 'pack-objects respects --local (non-local pack)' '
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mv .git/objects/pack/pack2-$pack2.* alt.git/objects/pack/ &&
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echo HEAD | git pack-objects --local --stdout --revs >2b.pack &&
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git index-pack 2b.pack &&
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list_packed_objects 2b.idx >2b.objects &&
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! has_any keepobjects 2b.objects
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'
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test_expect_success 'pack-objects respects --honor-pack-keep (local bitmapped pack)' '
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ls .git/objects/pack/ | grep bitmap >output &&
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test_line_count = 1 output &&
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packbitmap=$(basename $(cat output) .bitmap) &&
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list_packed_objects .git/objects/pack/$packbitmap.idx >packbitmap.objects &&
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test_when_finished "rm -f .git/objects/pack/$packbitmap.keep" &&
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>.git/objects/pack/$packbitmap.keep &&
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echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >3a.pack &&
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git index-pack 3a.pack &&
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list_packed_objects 3a.idx >3a.objects &&
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! has_any packbitmap.objects 3a.objects
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'
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test_expect_success 'pack-objects respects --local (non-local bitmapped pack)' '
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mv .git/objects/pack/$packbitmap.* alt.git/objects/pack/ &&
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rm -f .git/objects/pack/multi-pack-index &&
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test_when_finished "mv alt.git/objects/pack/$packbitmap.* .git/objects/pack/" &&
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echo HEAD | git pack-objects --local --stdout --revs >3b.pack &&
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git index-pack 3b.pack &&
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list_packed_objects 3b.idx >3b.objects &&
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! has_any packbitmap.objects 3b.objects
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'
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test_expect_success 'pack-objects to file can use bitmap' '
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# make sure we still have 1 bitmap index from previous tests
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ls .git/objects/pack/ | grep bitmap >output &&
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test_line_count = 1 output &&
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# verify equivalent packs are generated with/without using bitmap index
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packasha1=$(git pack-objects --no-use-bitmap-index --all packa </dev/null) &&
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packbsha1=$(git pack-objects --use-bitmap-index --all packb </dev/null) &&
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list_packed_objects packa-$packasha1.idx >packa.objects &&
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list_packed_objects packb-$packbsha1.idx >packb.objects &&
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test_cmp packa.objects packb.objects
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'
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test_expect_success 'full repack, reusing previous bitmaps' '
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git repack -ad &&
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ls .git/objects/pack/ | grep bitmap >output &&
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test_line_count = 1 output
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'
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test_expect_success 'fetch (full bitmap)' '
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git --git-dir=clone.git fetch origin second:second &&
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git rev-parse HEAD >expect &&
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git --git-dir=clone.git rev-parse HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'create objects for missing-HAVE tests' '
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blob=$(echo "missing have" | git hash-object -w --stdin) &&
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tree=$(printf "100644 blob $blob\tfile\n" | git mktree) &&
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parent=$(echo parent | git commit-tree $tree) &&
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commit=$(echo commit | git commit-tree $tree -p $parent) &&
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cat >revs <<-EOF
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HEAD
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^HEAD^
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^$commit
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EOF
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'
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test_expect_success 'pack-objects respects --incremental' '
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cat >revs2 <<-EOF &&
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HEAD
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$commit
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EOF
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git pack-objects --incremental --stdout --revs <revs2 >4.pack &&
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git index-pack 4.pack &&
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list_packed_objects 4.idx >4.objects &&
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test_line_count = 4 4.objects &&
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git rev-list --objects $commit >revlist &&
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cut -d" " -f1 revlist |sort >objects &&
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test_cmp 4.objects objects
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'
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test_expect_success 'pack with missing blob' '
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rm $(objpath $blob) &&
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git pack-objects --stdout --revs <revs >/dev/null
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'
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test_expect_success 'pack with missing tree' '
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rm $(objpath $tree) &&
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git pack-objects --stdout --revs <revs >/dev/null
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'
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test_expect_success 'pack with missing parent' '
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rm $(objpath $parent) &&
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git pack-objects --stdout --revs <revs >/dev/null
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'
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test_expect_success JGIT,SHA1 'we can read jgit bitmaps' '
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git clone --bare . compat-jgit.git &&
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(
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cd compat-jgit.git &&
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rm -f objects/pack/*.bitmap &&
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jgit gc &&
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git rev-list --test-bitmap HEAD
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)
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'
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test_expect_success JGIT,SHA1 'jgit can read our bitmaps' '
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git clone --bare . compat-us.git &&
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(
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cd compat-us.git &&
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git repack -adb &&
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# jgit gc will barf if it does not like our bitmaps
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jgit gc
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)
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'
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test_expect_success 'splitting packs does not generate bogus bitmaps' '
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test-tool genrandom foo $((1024 * 1024)) >rand &&
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git add rand &&
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git commit -m "commit with big file" &&
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git -c pack.packSizeLimit=500k repack -adb &&
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git init --bare no-bitmaps.git &&
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git -C no-bitmaps.git fetch .. HEAD
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'
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test_expect_success 'set up reusable pack' '
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rm -f .git/objects/pack/*.keep &&
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git repack -adb &&
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reusable_pack () {
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git for-each-ref --format="%(objectname)" |
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git pack-objects --delta-base-offset --revs --stdout "$@"
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}
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'
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test_expect_success 'pack reuse respects --honor-pack-keep' '
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test_when_finished "rm -f .git/objects/pack/*.keep" &&
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for i in .git/objects/pack/*.pack
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do
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>${i%.pack}.keep
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done &&
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reusable_pack --honor-pack-keep >empty.pack &&
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git index-pack empty.pack &&
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git show-index <empty.idx >actual &&
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test_must_be_empty actual
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'
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test_expect_success 'pack reuse respects --local' '
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mv .git/objects/pack/* alt.git/objects/pack/ &&
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test_when_finished "mv alt.git/objects/pack/* .git/objects/pack/" &&
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reusable_pack --local >empty.pack &&
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git index-pack empty.pack &&
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git show-index <empty.idx >actual &&
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test_must_be_empty actual
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'
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test_expect_success 'pack reuse respects --incremental' '
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reusable_pack --incremental >empty.pack &&
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git index-pack empty.pack &&
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git show-index <empty.idx >actual &&
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test_must_be_empty actual
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'
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test_expect_success 'truncated bitmap fails gracefully (ewah)' '
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test_config pack.writebitmaphashcache false &&
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git repack -ad &&
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git rev-list --use-bitmap-index --count --all >expect &&
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bitmap=$(ls .git/objects/pack/*.bitmap) &&
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test_when_finished "rm -f $bitmap" &&
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test_copy_bytes 256 <$bitmap >$bitmap.tmp &&
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mv -f $bitmap.tmp $bitmap &&
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git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
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test_cmp expect actual &&
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test_i18ngrep corrupt.ewah.bitmap stderr
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'
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test_expect_success 'truncated bitmap fails gracefully (cache)' '
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git repack -ad &&
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git rev-list --use-bitmap-index --count --all >expect &&
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bitmap=$(ls .git/objects/pack/*.bitmap) &&
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test_when_finished "rm -f $bitmap" &&
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test_copy_bytes 512 <$bitmap >$bitmap.tmp &&
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mv -f $bitmap.tmp $bitmap &&
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git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
|
|
test_cmp expect actual &&
|
|
test_i18ngrep corrupted.bitmap.index stderr
|
|
'
|
|
|
|
# have_delta <obj> <expected_base>
|
|
#
|
|
# Note that because this relies on cat-file, it might find _any_ copy of an
|
|
# object in the repository. The caller is responsible for making sure
|
|
# there's only one (e.g., via "repack -ad", or having just fetched a copy).
|
|
have_delta () {
|
|
echo $2 >expect &&
|
|
echo $1 | git cat-file --batch-check="%(deltabase)" >actual &&
|
|
test_cmp expect actual
|
|
}
|
|
|
|
# Create a state of history with these properties:
|
|
#
|
|
# - refs that allow a client to fetch some new history, while sharing some old
|
|
# history with the server; we use branches delta-reuse-old and
|
|
# delta-reuse-new here
|
|
#
|
|
# - the new history contains an object that is stored on the server as a delta
|
|
# against a base that is in the old history
|
|
#
|
|
# - the base object is not immediately reachable from the tip of the old
|
|
# history; finding it would involve digging down through history we know the
|
|
# other side has
|
|
#
|
|
# This should result in a state where fetching from old->new would not
|
|
# traditionally reuse the on-disk delta (because we'd have to dig to realize
|
|
# that the client has it), but we will do so if bitmaps can tell us cheaply
|
|
# that the other side has it.
|
|
test_expect_success 'set up thin delta-reuse parent' '
|
|
# This first commit contains the buried base object.
|
|
test-tool genrandom delta 16384 >file &&
|
|
git add file &&
|
|
git commit -m "delta base" &&
|
|
base=$(git rev-parse --verify HEAD:file) &&
|
|
|
|
# These intermediate commits bury the base back in history.
|
|
# This becomes the "old" state.
|
|
for i in 1 2 3 4 5
|
|
do
|
|
echo $i >file &&
|
|
git commit -am "intermediate $i" || return 1
|
|
done &&
|
|
git branch delta-reuse-old &&
|
|
|
|
# And now our new history has a delta against the buried base. Note
|
|
# that this must be smaller than the original file, since pack-objects
|
|
# prefers to create deltas from smaller objects to larger.
|
|
test-tool genrandom delta 16300 >file &&
|
|
git commit -am "delta result" &&
|
|
delta=$(git rev-parse --verify HEAD:file) &&
|
|
git branch delta-reuse-new &&
|
|
|
|
# Repack with bitmaps and double check that we have the expected delta
|
|
# relationship.
|
|
git repack -adb &&
|
|
have_delta $delta $base
|
|
'
|
|
|
|
# Now we can sanity-check the non-bitmap behavior (that the server is not able
|
|
# to reuse the delta). This isn't strictly something we care about, so this
|
|
# test could be scrapped in the future. But it makes sure that the next test is
|
|
# actually triggering the feature we want.
|
|
#
|
|
# Note that our tools for working with on-the-wire "thin" packs are limited. So
|
|
# we actually perform the fetch, retain the resulting pack, and inspect the
|
|
# result.
|
|
test_expect_success 'fetch without bitmaps ignores delta against old base' '
|
|
test_config pack.usebitmaps false &&
|
|
test_when_finished "rm -rf client.git" &&
|
|
git init --bare client.git &&
|
|
(
|
|
cd client.git &&
|
|
git config transfer.unpackLimit 1 &&
|
|
git fetch .. delta-reuse-old:delta-reuse-old &&
|
|
git fetch .. delta-reuse-new:delta-reuse-new &&
|
|
have_delta $delta $ZERO_OID
|
|
)
|
|
'
|
|
|
|
# And do the same for the bitmap case, where we do expect to find the delta.
|
|
test_expect_success 'fetch with bitmaps can reuse old base' '
|
|
test_config pack.usebitmaps true &&
|
|
test_when_finished "rm -rf client.git" &&
|
|
git init --bare client.git &&
|
|
(
|
|
cd client.git &&
|
|
git config transfer.unpackLimit 1 &&
|
|
git fetch .. delta-reuse-old:delta-reuse-old &&
|
|
git fetch .. delta-reuse-new:delta-reuse-new &&
|
|
have_delta $delta $base
|
|
)
|
|
'
|
|
|
|
test_done
|