Squashed 'third_party/git/' content from commit cb71568594
git-subtree-dir: third_party/git git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7
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Vincent Ambo
commit
1b593e1ea4
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170
t/t6501-freshen-objects.sh
Executable file
170
t/t6501-freshen-objects.sh
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#!/bin/sh
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#
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# This test covers the handling of objects which might have old
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# mtimes in the filesystem (because they were used previously)
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# and are just now becoming referenced again.
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#
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# We're going to do two things that are a little bit "fake" to
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# help make our simulation easier:
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#
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# 1. We'll turn off reflogs. You can still run into
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# problems with reflogs on, but your objects
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# don't get pruned until both the reflog expiration
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# has passed on their references, _and_ they are out
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# of prune's expiration period. Dropping reflogs
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# means we only have to deal with one variable in our tests,
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# but the results generalize.
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#
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# 2. We'll use a temporary index file to create our
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# works-in-progress. Most workflows would mention
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# referenced objects in the index, which prune takes
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# into account. However, many operations don't. For
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# example, a partial commit with "git commit foo"
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# will use a temporary index. Or they may not need
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# an index at all (e.g., creating a new commit
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# to refer to an existing tree).
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test_description='check pruning of dependent objects'
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. ./test-lib.sh
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# We care about reachability, so we do not want to use
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# the normal test_commit, which creates extra tags.
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add () {
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echo "$1" >"$1" &&
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git add "$1"
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}
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commit () {
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test_tick &&
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add "$1" &&
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git commit -m "$1"
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}
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maybe_repack () {
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if test -n "$repack"; then
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git repack -ad
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fi
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}
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for repack in '' true; do
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title=${repack:+repack}
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title=${title:-loose}
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test_expect_success "make repo completely empty ($title)" '
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rm -rf .git &&
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git init
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'
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test_expect_success "disable reflogs ($title)" '
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git config core.logallrefupdates false &&
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git reflog expire --expire=all --all
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'
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test_expect_success "setup basic history ($title)" '
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commit base
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'
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test_expect_success "create and abandon some objects ($title)" '
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git checkout -b experiment &&
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commit abandon &&
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maybe_repack &&
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git checkout master &&
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git branch -D experiment
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'
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test_expect_success "simulate time passing ($title)" '
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test-tool chmtime --get -86400 $(find .git/objects -type f)
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'
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test_expect_success "start writing new commit with old blob ($title)" '
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tree=$(
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GIT_INDEX_FILE=index.tmp &&
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export GIT_INDEX_FILE &&
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git read-tree HEAD &&
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add unrelated &&
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add abandon &&
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git write-tree
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)
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'
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test_expect_success "simultaneous gc ($title)" '
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git gc --prune=12.hours.ago
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'
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test_expect_success "finish writing out commit ($title)" '
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commit=$(echo foo | git commit-tree -p HEAD $tree) &&
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git update-ref HEAD $commit
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'
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# "abandon" blob should have been rescued by reference from new tree
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test_expect_success "repository passes fsck ($title)" '
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git fsck
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'
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test_expect_success "abandon objects again ($title)" '
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git reset --hard HEAD^ &&
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test-tool chmtime --get -86400 $(find .git/objects -type f)
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'
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test_expect_success "start writing new commit with same tree ($title)" '
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tree=$(
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GIT_INDEX_FILE=index.tmp &&
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export GIT_INDEX_FILE &&
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git read-tree HEAD &&
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add abandon &&
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add unrelated &&
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git write-tree
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)
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'
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test_expect_success "simultaneous gc ($title)" '
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git gc --prune=12.hours.ago
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'
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# tree should have been refreshed by write-tree
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test_expect_success "finish writing out commit ($title)" '
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commit=$(echo foo | git commit-tree -p HEAD $tree) &&
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git update-ref HEAD $commit
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'
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done
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test_expect_success 'do not complain about existing broken links (commit)' '
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cat >broken-commit <<-\EOF &&
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tree 0000000000000000000000000000000000000001
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parent 0000000000000000000000000000000000000002
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author whatever <whatever@example.com> 1234 -0000
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committer whatever <whatever@example.com> 1234 -0000
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some message
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EOF
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commit=$(git hash-object -t commit -w broken-commit) &&
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git gc 2>stderr &&
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verbose git cat-file -e $commit &&
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test_must_be_empty stderr
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'
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test_expect_success 'do not complain about existing broken links (tree)' '
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cat >broken-tree <<-\EOF &&
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100644 blob 0000000000000000000000000000000000000003 foo
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EOF
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tree=$(git mktree --missing <broken-tree) &&
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git gc 2>stderr &&
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git cat-file -e $tree &&
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test_must_be_empty stderr
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'
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test_expect_success 'do not complain about existing broken links (tag)' '
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cat >broken-tag <<-\EOF &&
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object 0000000000000000000000000000000000000004
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type commit
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tag broken
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tagger whatever <whatever@example.com> 1234 -0000
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this is a broken tag
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EOF
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tag=$(git hash-object -t tag -w broken-tag) &&
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git gc 2>stderr &&
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git cat-file -e $tag &&
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test_must_be_empty stderr
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'
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test_done
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