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7d7ff15b39
'rerere gc' prunes resolutions of conflicted merges that occurred long time ago, and when doing so it takes the creation time of the conflicted automerge results into account. This can cause the loss of frequently used conflict resolutions (e.g. long-living topic branches are merged into a regularly rebuilt integration branch (think of git's pu)) when they become old enough to exceed 'rerere gc's threshold. To prevent the loss of valuable merge resolutions 'rerere' will (1) update the timestamp of the recorded conflict resolution (i.e. 'postimage') each time when encountering and resolving the same merge conflict, and (2) take this timestamp, i.e. the time of the last usage into account when gc'ing. Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
249 lines
6.2 KiB
Bash
Executable file
249 lines
6.2 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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'
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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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git commit -q -a -m initial &&
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git checkout -b first &&
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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 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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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; 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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# activate rerere, old style
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test_expect_success 'conflicting merge' '
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git reset --hard &&
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mkdir .git/rr-cache &&
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git config --unset rerere.enabled &&
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test_must_fail git merge first
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'
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sha1=$(perl -pe 's/ .*//' .git/MERGE_RR)
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rr=.git/rr-cache/$sha1
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test_expect_success 'recorded preimage' "grep ^=======$ $rr/preimage"
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test_expect_success 'rerere.enabled works, too' '
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rm -rf .git/rr-cache &&
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git config rerere.enabled true &&
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git reset --hard &&
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test_must_fail git merge first &&
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grep ^=======$ $rr/preimage
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'
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test_expect_success 'no postimage or thisimage yet' \
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"test ! -f $rr/postimage -a ! -f $rr/thisimage"
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test_expect_success 'preimage has right number of lines' '
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cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
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test $cnt = 13
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'
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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_expect_success 'rerere diff' 'test_cmp expect out'
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cat > expect << EOF
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a1
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EOF
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git rerere status > out
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test_expect_success 'rerere status' 'test_cmp expect out'
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test_expect_success 'commit succeeds' \
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"git commit -q -a -m 'prefer first over second'"
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test_expect_success 'recorded postimage' "test -f $rr/postimage"
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oldmtimepost=$(test-chmtime -v -60 $rr/postimage |cut -f 1)
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test_expect_success 'another conflicting merge' '
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git checkout -b third master &&
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git show second^:a1 | sed "s/To die: t/To die! T/" > a1 &&
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git commit -q -a -m third &&
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test_must_fail git pull . first
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'
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git show first:a1 | sed 's/To die: t/To die! T/' > expect
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test_expect_success 'rerere kicked in' "! grep ^=======$ a1"
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test_expect_success 'rerere prefers first change' 'test_cmp a1 expect'
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test_expect_success 'rerere updates postimage timestamp' '
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newmtimepost=$(test-chmtime -v +0 $rr/postimage |cut -f 1) &&
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test $oldmtimepost -lt $newmtimepost
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'
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rm $rr/postimage
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echo "$sha1 a1" | perl -pe 'y/\012/\000/' > .git/MERGE_RR
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test_expect_success 'rerere clear' 'git rerere clear'
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test_expect_success 'clear removed the directory' "test ! -d $rr"
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mkdir $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=$((-1-60*86400))
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test-chmtime =$just_over_60_days_ago $rr/preimage
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test-chmtime =$almost_60_days_ago $rr/postimage
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test-chmtime =$almost_15_days_ago $rr2/preimage
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test_expect_success 'garbage collection (part1)' 'git rerere gc'
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test_expect_success 'young or recently used records still live' \
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"test -f $rr/preimage && test -f $rr2/preimage"
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test-chmtime =$just_over_60_days_ago $rr/postimage
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test-chmtime =$just_over_15_days_ago $rr2/preimage
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test_expect_success 'garbage collection (part2)' 'git rerere gc'
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test_expect_success 'old records rest in peace' \
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"test ! -f $rr/preimage && test ! -f $rr2/preimage"
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test_expect_success '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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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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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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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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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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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 Cello = "$(cat file3)" &&
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test 0 != $(git ls-files -u | wc -l)
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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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test 0 = $(git ls-files -u | wc -l)
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'
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test_expect_success 'merge --rerere-autoupdate' '
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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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test 0 = $(git ls-files -u | wc -l)
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'
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test_expect_success 'merge --no-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 --no-rerere-autoupdate fifth &&
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test 2 = $(git ls-files -u | wc -l)
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'
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test_done
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