mirror of
https://github.com/git/git.git
synced 2024-12-01 22:13:45 +08:00
6e2a09d24b
Without this, attempting to index a pack containing objects that have been replaced results in a fatal error that looks like: fatal: SHA1 COLLISION FOUND WITH <replaced-object> ! Signed-off-by: Nelson Elhage <nelhage@ksplice.com> Acked-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
231 lines
6.9 KiB
Bash
Executable File
231 lines
6.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2008 Christian Couder
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#
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test_description='Tests replace refs functionality'
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exec </dev/null
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. ./test-lib.sh
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add_and_commit_file()
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{
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_file="$1"
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_msg="$2"
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git add $_file || return $?
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test_tick || return $?
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git commit --quiet -m "$_file: $_msg"
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}
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HASH1=
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HASH2=
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HASH3=
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HASH4=
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HASH5=
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HASH6=
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HASH7=
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test_expect_success 'set up buggy branch' '
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echo "line 1" >> hello &&
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echo "line 2" >> hello &&
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echo "line 3" >> hello &&
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echo "line 4" >> hello &&
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add_and_commit_file hello "4 lines" &&
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HASH1=$(git rev-parse --verify HEAD) &&
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echo "line BUG" >> hello &&
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echo "line 6" >> hello &&
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echo "line 7" >> hello &&
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echo "line 8" >> hello &&
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add_and_commit_file hello "4 more lines with a BUG" &&
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HASH2=$(git rev-parse --verify HEAD) &&
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echo "line 9" >> hello &&
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echo "line 10" >> hello &&
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add_and_commit_file hello "2 more lines" &&
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HASH3=$(git rev-parse --verify HEAD) &&
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echo "line 11" >> hello &&
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add_and_commit_file hello "1 more line" &&
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HASH4=$(git rev-parse --verify HEAD) &&
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sed -e "s/BUG/5/" hello > hello.new &&
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mv hello.new hello &&
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add_and_commit_file hello "BUG fixed" &&
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HASH5=$(git rev-parse --verify HEAD) &&
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echo "line 12" >> hello &&
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echo "line 13" >> hello &&
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add_and_commit_file hello "2 more lines" &&
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HASH6=$(git rev-parse --verify HEAD)
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echo "line 14" >> hello &&
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echo "line 15" >> hello &&
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echo "line 16" >> hello &&
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add_and_commit_file hello "again 3 more lines" &&
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HASH7=$(git rev-parse --verify HEAD)
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'
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test_expect_success 'replace the author' '
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git cat-file commit $HASH2 | grep "author A U Thor" &&
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R=$(git cat-file commit $HASH2 | sed -e "s/A U/O/" | git hash-object -t commit --stdin -w) &&
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git cat-file commit $R | grep "author O Thor" &&
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git update-ref refs/replace/$HASH2 $R &&
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git show HEAD~5 | grep "O Thor" &&
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git show $HASH2 | grep "O Thor"
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'
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test_expect_success 'test --no-replace-objects option' '
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git cat-file commit $HASH2 | grep "author O Thor" &&
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git --no-replace-objects cat-file commit $HASH2 | grep "author A U Thor" &&
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git show $HASH2 | grep "O Thor" &&
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git --no-replace-objects show $HASH2 | grep "A U Thor"
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'
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test_expect_success 'test GIT_NO_REPLACE_OBJECTS env variable' '
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GIT_NO_REPLACE_OBJECTS=1 git cat-file commit $HASH2 | grep "author A U Thor" &&
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GIT_NO_REPLACE_OBJECTS=1 git show $HASH2 | grep "A U Thor"
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'
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cat >tag.sig <<EOF
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object $HASH2
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type commit
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tag mytag
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tagger T A Gger <> 0 +0000
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EOF
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test_expect_success 'tag replaced commit' '
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git mktag <tag.sig >.git/refs/tags/mytag 2>message
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'
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test_expect_success '"git fsck" works' '
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git fsck master > fsck_master.out &&
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grep "dangling commit $R" fsck_master.out &&
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grep "dangling tag $(cat .git/refs/tags/mytag)" fsck_master.out &&
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test -z "$(git fsck)"
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'
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test_expect_success 'repack, clone and fetch work' '
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git repack -a -d &&
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git clone --no-hardlinks . clone_dir &&
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cd clone_dir &&
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git show HEAD~5 | grep "A U Thor" &&
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git show $HASH2 | grep "A U Thor" &&
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git cat-file commit $R &&
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git repack -a -d &&
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test_must_fail git cat-file commit $R &&
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git fetch ../ "refs/replace/*:refs/replace/*" &&
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git show HEAD~5 | grep "O Thor" &&
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git show $HASH2 | grep "O Thor" &&
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git cat-file commit $R &&
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cd ..
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'
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test_expect_success '"git replace" listing and deleting' '
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test "$HASH2" = "$(git replace -l)" &&
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test "$HASH2" = "$(git replace)" &&
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aa=${HASH2%??????????????????????????????????????} &&
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test "$HASH2" = "$(git replace -l "$aa*")" &&
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test_must_fail git replace -d $R &&
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test_must_fail git replace -d &&
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test_must_fail git replace -l -d $HASH2 &&
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git replace -d $HASH2 &&
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git show $HASH2 | grep "A U Thor" &&
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test -z "$(git replace -l)"
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'
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test_expect_success '"git replace" replacing' '
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git replace $HASH2 $R &&
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git show $HASH2 | grep "O Thor" &&
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test_must_fail git replace $HASH2 $R &&
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git replace -f $HASH2 $R &&
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test_must_fail git replace -f &&
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test "$HASH2" = "$(git replace)"
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'
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# This creates a side branch where the bug in H2
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# does not appear because P2 is created by applying
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# H2 and squashing H5 into it.
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# P3, P4 and P6 are created by cherry-picking H3, H4
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# and H6 respectively.
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#
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# At this point, we should have the following:
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#
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# P2--P3--P4--P6
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# /
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# H1-H2-H3-H4-H5-H6-H7
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#
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# Then we replace H6 with P6.
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#
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test_expect_success 'create parallel branch without the bug' '
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git replace -d $HASH2 &&
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git show $HASH2 | grep "A U Thor" &&
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git checkout $HASH1 &&
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git cherry-pick $HASH2 &&
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git show $HASH5 | git apply &&
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git commit --amend -m "hello: 4 more lines WITHOUT the bug" hello &&
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PARA2=$(git rev-parse --verify HEAD) &&
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git cherry-pick $HASH3 &&
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PARA3=$(git rev-parse --verify HEAD) &&
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git cherry-pick $HASH4 &&
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PARA4=$(git rev-parse --verify HEAD) &&
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git cherry-pick $HASH6 &&
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PARA6=$(git rev-parse --verify HEAD) &&
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git replace $HASH6 $PARA6 &&
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git checkout master &&
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cur=$(git rev-parse --verify HEAD) &&
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test "$cur" = "$HASH7" &&
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git log --pretty=oneline | grep $PARA2 &&
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git remote add cloned ./clone_dir
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'
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test_expect_success 'push to cloned repo' '
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git push cloned $HASH6^:refs/heads/parallel &&
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cd clone_dir &&
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git checkout parallel &&
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git log --pretty=oneline | grep $PARA2 &&
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cd ..
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'
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test_expect_success 'push branch with replacement' '
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git cat-file commit $PARA3 | grep "author A U Thor" &&
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S=$(git cat-file commit $PARA3 | sed -e "s/A U/O/" | git hash-object -t commit --stdin -w) &&
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git cat-file commit $S | grep "author O Thor" &&
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git replace $PARA3 $S &&
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git show $HASH6~2 | grep "O Thor" &&
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git show $PARA3 | grep "O Thor" &&
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git push cloned $HASH6^:refs/heads/parallel2 &&
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cd clone_dir &&
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git checkout parallel2 &&
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git log --pretty=oneline | grep $PARA3 &&
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git show $PARA3 | grep "A U Thor" &&
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cd ..
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'
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test_expect_success 'fetch branch with replacement' '
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git branch tofetch $HASH6 &&
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cd clone_dir &&
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git fetch origin refs/heads/tofetch:refs/heads/parallel3
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git log --pretty=oneline parallel3 | grep $PARA3
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git show $PARA3 | grep "A U Thor"
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cd ..
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'
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test_expect_success 'bisect and replacements' '
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git bisect start $HASH7 $HASH1 &&
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test "$S" = "$(git rev-parse --verify HEAD)" &&
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git bisect reset &&
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GIT_NO_REPLACE_OBJECTS=1 git bisect start $HASH7 $HASH1 &&
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test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
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git bisect reset &&
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git --no-replace-objects bisect start $HASH7 $HASH1 &&
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test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
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git bisect reset
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'
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test_expect_success 'index-pack and replacements' '
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git --no-replace-objects rev-list --objects HEAD |
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git --no-replace-objects pack-objects test- &&
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git index-pack test-*.pack
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'
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#
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#
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test_done
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