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https://github.com/git/git
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bd7dfa543e
Currently when a user doesn't resolve a conflict, commits the results, and does an operation which creates another conflict, rerere will use the ID of the previously unresolved conflict for the new conflict. This is because the conflict is kept in the MERGE_RR file, which 'rerere' reads every time it is invoked. After the new conflict is solved, rerere will record the resolution with the ID of the old conflict. So in order to replay the conflict, both merges would have to be re-done, instead of just the last one, in order for rerere to be able to automatically resolve the conflict. Instead of that, assign a new conflict ID if there are still conflicts in a file and the file had conflicts at a previous step. This ID matches the conflict we actually resolved at the corresponding step. Note that there are no backwards compatibility worries here, as rerere would have failed to even normalize the conflict before this patch series. Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
649 lines
16 KiB
Bash
Executable file
649 lines
16 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2006 Johannes E. Schindelin
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#
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test_description='git rerere
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! [fifth] version1
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! [first] first
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! [fourth] version1
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! [master] initial
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! [second] prefer first over second
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! [third] version2
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------
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+ [third] version2
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+ [fifth] version1
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+ [fourth] version1
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+ + + [third^] third
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- [second] prefer first over second
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+ + [first] first
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+ [second^] second
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++++++ [master] initial
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'
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. ./test-lib.sh
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test_expect_success 'setup' '
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cat >a1 <<-\EOF &&
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Some title
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==========
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Whether '\''tis nobler in the mind to suffer
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The slings and arrows of outrageous fortune,
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Or to take arms against a sea of troubles,
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And by opposing end them? To die: to sleep;
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No more; and by a sleep to say we end
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The heart-ache and the thousand natural shocks
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That flesh is heir to, '\''tis a consummation
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Devoutly to be wish'\''d.
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EOF
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git add a1 &&
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test_tick &&
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git commit -q -a -m initial &&
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cat >>a1 <<-\EOF &&
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Some title
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==========
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To die, to sleep;
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To sleep: perchance to dream: ay, there'\''s the rub;
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For in that sleep of death what dreams may come
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When we have shuffled off this mortal coil,
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Must give us pause: there'\''s the respect
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That makes calamity of so long life;
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EOF
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git checkout -b first &&
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test_tick &&
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git commit -q -a -m first &&
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git checkout -b second master &&
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git show first:a1 |
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sed -e "s/To die, t/To die! T/" -e "s/Some title/Some Title/" >a1 &&
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echo "* END *" >>a1 &&
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test_tick &&
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git commit -q -a -m second
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'
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test_expect_success 'nothing recorded without rerere' '
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rm -rf .git/rr-cache &&
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git config rerere.enabled false &&
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test_must_fail git merge first &&
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! test -d .git/rr-cache
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'
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test_expect_success 'activate rerere, old style (conflicting merge)' '
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git reset --hard &&
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mkdir .git/rr-cache &&
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test_might_fail git config --unset rerere.enabled &&
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test_must_fail git merge first &&
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sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
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rr=.git/rr-cache/$sha1 &&
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grep "^=======\$" $rr/preimage &&
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! test -f $rr/postimage &&
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! test -f $rr/thisimage
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'
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test_expect_success 'rerere.enabled works, too' '
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rm -rf .git/rr-cache &&
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git config rerere.enabled true &&
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git reset --hard &&
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test_must_fail git merge first &&
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sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
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rr=.git/rr-cache/$sha1 &&
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grep ^=======$ $rr/preimage
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'
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test_expect_success 'set up rr-cache' '
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rm -rf .git/rr-cache &&
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git config rerere.enabled true &&
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git reset --hard &&
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test_must_fail git merge first &&
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sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
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rr=.git/rr-cache/$sha1
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'
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test_expect_success 'rr-cache looks sane' '
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# no postimage or thisimage yet
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! test -f $rr/postimage &&
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! test -f $rr/thisimage &&
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# preimage has right number of lines
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cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
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echo $cnt &&
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test $cnt = 13
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'
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test_expect_success 'rerere diff' '
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git show first:a1 >a1 &&
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cat >expect <<-\EOF &&
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--- a/a1
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+++ b/a1
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@@ -1,4 +1,4 @@
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-Some Title
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+Some title
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==========
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Whether '\''tis nobler in the mind to suffer
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The slings and arrows of outrageous fortune,
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@@ -8,21 +8,11 @@
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The heart-ache and the thousand natural shocks
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That flesh is heir to, '\''tis a consummation
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Devoutly to be wish'\''d.
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-<<<<<<<
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-Some Title
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-==========
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-To die! To sleep;
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-=======
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Some title
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==========
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To die, to sleep;
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->>>>>>>
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To sleep: perchance to dream: ay, there'\''s the rub;
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For in that sleep of death what dreams may come
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When we have shuffled off this mortal coil,
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Must give us pause: there'\''s the respect
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That makes calamity of so long life;
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-<<<<<<<
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-=======
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-* END *
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->>>>>>>
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EOF
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git rerere diff >out &&
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test_cmp expect out
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'
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test_expect_success 'rerere status' '
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echo a1 >expect &&
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git rerere status >out &&
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test_cmp expect out
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'
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test_expect_success 'first postimage wins' '
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git show first:a1 | sed "s/To die: t/To die! T/" >expect &&
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git commit -q -a -m "prefer first over second" &&
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test -f $rr/postimage &&
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oldmtimepost=$(test-tool chmtime --get -60 $rr/postimage) &&
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git checkout -b third master &&
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git show second^:a1 | sed "s/To die: t/To die! T/" >a1 &&
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git commit -q -a -m third &&
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test_must_fail git merge first &&
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# rerere kicked in
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! grep "^=======\$" a1 &&
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test_cmp expect a1
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'
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test_expect_success 'rerere updates postimage timestamp' '
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newmtimepost=$(test-tool chmtime --get $rr/postimage) &&
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test $oldmtimepost -lt $newmtimepost
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'
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test_expect_success 'rerere clear' '
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mv $rr/postimage .git/post-saved &&
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echo "$sha1 a1" | perl -pe "y/\012/\000/" >.git/MERGE_RR &&
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git rerere clear &&
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! test -d $rr
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'
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test_expect_success 'leftover directory' '
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git reset --hard &&
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mkdir -p $rr &&
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test_must_fail git merge first &&
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test -f $rr/preimage
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'
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test_expect_success 'missing preimage' '
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git reset --hard &&
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mkdir -p $rr &&
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cp .git/post-saved $rr/postimage &&
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test_must_fail git merge first &&
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test -f $rr/preimage
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'
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test_expect_success 'set up for garbage collection tests' '
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mkdir -p $rr &&
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echo Hello >$rr/preimage &&
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echo World >$rr/postimage &&
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sha2=4000000000000000000000000000000000000000 &&
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rr2=.git/rr-cache/$sha2 &&
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mkdir $rr2 &&
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echo Hello >$rr2/preimage &&
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almost_15_days_ago=$((60-15*86400)) &&
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just_over_15_days_ago=$((-1-15*86400)) &&
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almost_60_days_ago=$((60-60*86400)) &&
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just_over_60_days_ago=$((-1-60*86400)) &&
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test-tool chmtime =$just_over_60_days_ago $rr/preimage &&
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test-tool chmtime =$almost_60_days_ago $rr/postimage &&
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test-tool chmtime =$almost_15_days_ago $rr2/preimage
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'
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test_expect_success 'gc preserves young or recently used records' '
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git rerere gc &&
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test -f $rr/preimage &&
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test -f $rr2/preimage
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'
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test_expect_success 'old records rest in peace' '
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test-tool chmtime =$just_over_60_days_ago $rr/postimage &&
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test-tool chmtime =$just_over_15_days_ago $rr2/preimage &&
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git rerere gc &&
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! test -f $rr/preimage &&
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! test -f $rr2/preimage
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'
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rerere_gc_custom_expiry_test () {
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five_days="$1" right_now="$2"
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test_expect_success "rerere gc with custom expiry ($five_days, $right_now)" '
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rm -fr .git/rr-cache &&
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rr=.git/rr-cache/$ZERO_OID &&
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mkdir -p "$rr" &&
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>"$rr/preimage" &&
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>"$rr/postimage" &&
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two_days_ago=$((-2*86400)) &&
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test-tool chmtime =$two_days_ago "$rr/preimage" &&
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test-tool chmtime =$two_days_ago "$rr/postimage" &&
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find .git/rr-cache -type f | sort >original &&
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git -c "gc.rerereresolved=$five_days" \
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-c "gc.rerereunresolved=$five_days" rerere gc &&
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find .git/rr-cache -type f | sort >actual &&
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test_cmp original actual &&
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git -c "gc.rerereresolved=$five_days" \
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-c "gc.rerereunresolved=$right_now" rerere gc &&
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find .git/rr-cache -type f | sort >actual &&
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test_cmp original actual &&
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git -c "gc.rerereresolved=$right_now" \
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-c "gc.rerereunresolved=$right_now" rerere gc &&
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find .git/rr-cache -type f | sort >actual &&
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>expect &&
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test_cmp expect actual
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'
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}
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rerere_gc_custom_expiry_test 5 0
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rerere_gc_custom_expiry_test 5.days.ago now
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test_expect_success 'setup: file2 added differently in two branches' '
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git reset --hard &&
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git checkout -b fourth &&
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echo Hallo >file2 &&
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git add file2 &&
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test_tick &&
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git commit -m version1 &&
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git checkout third &&
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echo Bello >file2 &&
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git add file2 &&
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test_tick &&
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git commit -m version2 &&
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test_must_fail git merge fourth &&
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echo Cello >file2 &&
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git add file2 &&
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git commit -m resolution
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'
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test_expect_success 'resolution was recorded properly' '
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echo Cello >expected &&
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git reset --hard HEAD~2 &&
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git checkout -b fifth &&
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echo Hallo >file3 &&
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git add file3 &&
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test_tick &&
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git commit -m version1 &&
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git checkout third &&
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echo Bello >file3 &&
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git add file3 &&
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test_tick &&
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git commit -m version2 &&
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git tag version2 &&
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test_must_fail git merge fifth &&
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test_cmp expected file3 &&
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test_must_fail git update-index --refresh
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'
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test_expect_success 'rerere.autoupdate' '
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git config rerere.autoupdate true &&
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git reset --hard &&
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git checkout version2 &&
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test_must_fail git merge fifth &&
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git update-index --refresh
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'
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test_expect_success 'merge --rerere-autoupdate' '
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test_might_fail git config --unset rerere.autoupdate &&
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git reset --hard &&
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git checkout version2 &&
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test_must_fail git merge --rerere-autoupdate fifth &&
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git update-index --refresh
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'
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test_expect_success 'merge --no-rerere-autoupdate' '
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headblob=$(git rev-parse version2:file3) &&
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mergeblob=$(git rev-parse fifth:file3) &&
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cat >expected <<-EOF &&
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100644 $headblob 2 file3
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100644 $mergeblob 3 file3
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EOF
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git config rerere.autoupdate true &&
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git reset --hard &&
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git checkout version2 &&
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test_must_fail git merge --no-rerere-autoupdate fifth &&
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git ls-files -u >actual &&
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test_cmp expected actual
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'
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test_expect_success 'set up an unresolved merge' '
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headblob=$(git rev-parse version2:file3) &&
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mergeblob=$(git rev-parse fifth:file3) &&
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cat >expected.unresolved <<-EOF &&
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100644 $headblob 2 file3
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100644 $mergeblob 3 file3
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EOF
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test_might_fail git config --unset rerere.autoupdate &&
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git reset --hard &&
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git checkout version2 &&
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fifth=$(git rev-parse fifth) &&
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echo "$fifth branch 'fifth' of ." |
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git fmt-merge-msg >msg &&
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ancestor=$(git merge-base version2 fifth) &&
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test_must_fail git merge-recursive "$ancestor" -- HEAD fifth &&
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git ls-files --stage >failedmerge &&
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cp file3 file3.conflict &&
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git ls-files -u >actual &&
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test_cmp expected.unresolved actual
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'
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test_expect_success 'explicit rerere' '
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test_might_fail git config --unset rerere.autoupdate &&
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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test_must_fail git update-index --refresh -q &&
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git rerere &&
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git ls-files -u >actual &&
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test_cmp expected.unresolved actual
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'
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test_expect_success 'explicit rerere with autoupdate' '
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git config rerere.autoupdate true &&
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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test_must_fail git update-index --refresh -q &&
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git rerere &&
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git update-index --refresh
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'
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test_expect_success 'explicit rerere --rerere-autoupdate overrides' '
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git config rerere.autoupdate false &&
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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git rerere &&
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git ls-files -u >actual1 &&
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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git rerere --rerere-autoupdate &&
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git update-index --refresh &&
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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git rerere --rerere-autoupdate --no-rerere-autoupdate &&
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git ls-files -u >actual2 &&
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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git rerere --rerere-autoupdate --no-rerere-autoupdate --rerere-autoupdate &&
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git update-index --refresh &&
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test_cmp expected.unresolved actual1 &&
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test_cmp expected.unresolved actual2
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'
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test_expect_success 'rerere --no-no-rerere-autoupdate' '
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git rm -fr --cached . &&
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git update-index --index-info <failedmerge &&
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cp file3.conflict file3 &&
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test_must_fail git rerere --no-no-rerere-autoupdate 2>err &&
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test_i18ngrep [Uu]sage err &&
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test_must_fail git update-index --refresh
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'
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test_expect_success 'rerere -h' '
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test_must_fail git rerere -h >help &&
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test_i18ngrep [Uu]sage help
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'
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concat_insert () {
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last=$1
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shift
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cat early && printf "%s\n" "$@" && cat late "$last"
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}
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count_pre_post () {
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find .git/rr-cache/ -type f -name "preimage*" >actual &&
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test_line_count = "$1" actual &&
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find .git/rr-cache/ -type f -name "postimage*" >actual &&
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test_line_count = "$2" actual
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}
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merge_conflict_resolve () {
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git reset --hard &&
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test_must_fail git merge six.1 &&
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# Resolution is to replace 7 with 6.1 and 6.2 (i.e. take both)
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concat_insert short 6.1 6.2 >file1 &&
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concat_insert long 6.1 6.2 >file2
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}
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test_expect_success 'multiple identical conflicts' '
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rm -fr .git/rr-cache &&
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mkdir .git/rr-cache &&
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git reset --hard &&
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test_seq 1 6 >early &&
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>late &&
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test_seq 11 15 >short &&
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test_seq 111 120 >long &&
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concat_insert short >file1 &&
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concat_insert long >file2 &&
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git add file1 file2 &&
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git commit -m base &&
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git tag base &&
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git checkout -b six.1 &&
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concat_insert short 6.1 >file1 &&
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concat_insert long 6.1 >file2 &&
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git add file1 file2 &&
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git commit -m 6.1 &&
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git checkout -b six.2 HEAD^ &&
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concat_insert short 6.2 >file1 &&
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concat_insert long 6.2 >file2 &&
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git add file1 file2 &&
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git commit -m 6.2 &&
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# At this point, six.1 and six.2
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# - derive from common ancestor that has two files
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# 1...6 7 11..15 (file1) and 1...6 7 111..120 (file2)
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# - six.1 replaces these 7s with 6.1
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# - six.2 replaces these 7s with 6.2
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merge_conflict_resolve &&
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# Check that rerere knows that file1 and file2 have conflicts
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printf "%s\n" file1 file2 >expect &&
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git ls-files -u | sed -e "s/^.* //" | sort -u >actual &&
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test_cmp expect actual &&
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git rerere status | sort >actual &&
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|
test_cmp expect actual &&
|
|
|
|
git rerere remaining >actual &&
|
|
test_cmp expect actual &&
|
|
|
|
count_pre_post 2 0 &&
|
|
|
|
# Pretend that the conflicts were made quite some time ago
|
|
test-tool chmtime -172800 $(find .git/rr-cache/ -type f) &&
|
|
|
|
# Unresolved entries have not expired yet
|
|
git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
|
|
count_pre_post 2 0 &&
|
|
|
|
# Unresolved entries have expired
|
|
git -c gc.rerereresolved=5 -c gc.rerereunresolved=1 rerere gc &&
|
|
count_pre_post 0 0 &&
|
|
|
|
# Recreate the conflicted state
|
|
merge_conflict_resolve &&
|
|
count_pre_post 2 0 &&
|
|
|
|
# Clear it
|
|
git rerere clear &&
|
|
count_pre_post 0 0 &&
|
|
|
|
# Recreate the conflicted state
|
|
merge_conflict_resolve &&
|
|
count_pre_post 2 0 &&
|
|
|
|
# We resolved file1 and file2
|
|
git rerere &&
|
|
>expect &&
|
|
git rerere remaining >actual &&
|
|
test_cmp expect actual &&
|
|
|
|
# We must have recorded both of them
|
|
count_pre_post 2 2 &&
|
|
|
|
# Now we should be able to resolve them both
|
|
git reset --hard &&
|
|
test_must_fail git merge six.1 &&
|
|
git rerere &&
|
|
|
|
>expect &&
|
|
git rerere remaining >actual &&
|
|
test_cmp expect actual &&
|
|
|
|
concat_insert short 6.1 6.2 >file1.expect &&
|
|
concat_insert long 6.1 6.2 >file2.expect &&
|
|
test_cmp file1.expect file1 &&
|
|
test_cmp file2.expect file2 &&
|
|
|
|
# Forget resolution for file2
|
|
git rerere forget file2 &&
|
|
echo file2 >expect &&
|
|
git rerere status >actual &&
|
|
test_cmp expect actual &&
|
|
count_pre_post 2 1 &&
|
|
|
|
# file2 already has correct resolution, so record it again
|
|
git rerere &&
|
|
|
|
# Pretend that the resolutions are old again
|
|
test-tool chmtime -172800 $(find .git/rr-cache/ -type f) &&
|
|
|
|
# Resolved entries have not expired yet
|
|
git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
|
|
|
|
count_pre_post 2 2 &&
|
|
|
|
# Resolved entries have expired
|
|
git -c gc.rerereresolved=1 -c gc.rerereunresolved=5 rerere gc &&
|
|
count_pre_post 0 0
|
|
'
|
|
|
|
test_expect_success 'rerere with unexpected conflict markers does not crash' '
|
|
git reset --hard &&
|
|
|
|
git checkout -b branch-1 master &&
|
|
echo "bar" >test &&
|
|
git add test &&
|
|
git commit -q -m two &&
|
|
|
|
git reset --hard &&
|
|
git checkout -b branch-2 master &&
|
|
echo "foo" >test &&
|
|
git add test &&
|
|
git commit -q -a -m one &&
|
|
|
|
test_must_fail git merge branch-1 &&
|
|
echo "<<<<<<< a" >test &&
|
|
git rerere &&
|
|
|
|
git rerere clear
|
|
'
|
|
|
|
test_expect_success 'rerere with inner conflict markers' '
|
|
git reset --hard &&
|
|
|
|
git checkout -b A master &&
|
|
echo "bar" >test &&
|
|
git add test &&
|
|
git commit -q -m two &&
|
|
echo "baz" >test &&
|
|
git add test &&
|
|
git commit -q -m three &&
|
|
|
|
git reset --hard &&
|
|
git checkout -b B master &&
|
|
echo "foo" >test &&
|
|
git add test &&
|
|
git commit -q -a -m one &&
|
|
|
|
test_must_fail git merge A~ &&
|
|
git add test &&
|
|
git commit -q -m "will solve conflicts later" &&
|
|
test_must_fail git merge A &&
|
|
|
|
echo "resolved" >test &&
|
|
git add test &&
|
|
git commit -q -m "solved conflict" &&
|
|
|
|
echo "resolved" >expect &&
|
|
|
|
git reset --hard HEAD~~ &&
|
|
test_must_fail git merge A~ &&
|
|
git add test &&
|
|
git commit -q -m "will solve conflicts later" &&
|
|
test_must_fail git merge A &&
|
|
cat test >actual &&
|
|
test_cmp expect actual &&
|
|
|
|
git add test &&
|
|
git commit -m "rerere solved conflict" &&
|
|
git reset --hard HEAD~ &&
|
|
test_must_fail git merge A &&
|
|
cat test >actual &&
|
|
test_cmp expect actual
|
|
'
|
|
|
|
test_done
|