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-rwxr-xr-xt/t4200-rerere.sh674
1 files changed, 674 insertions, 0 deletions
diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
new file mode 100755
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--- /dev/null
+++ b/t/t4200-rerere.sh
@@ -0,0 +1,674 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Johannes E. Schindelin
+#
+
+test_description='git rerere
+
+! [fifth] version1
+ ! [first] first
+ ! [fourth] version1
+ ! [master] initial
+ ! [second] prefer first over second
+ ! [third] version2
+------
+ + [third] version2
++ [fifth] version1
+ + [fourth] version1
++ + + [third^] third
+ - [second] prefer first over second
+ + + [first] first
+ + [second^] second
+++++++ [master] initial
+'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+ cat >a1 <<-\EOF &&
+ Some title
+ ==========
+ Whether '\''tis nobler in the mind to suffer
+ The slings and arrows of outrageous fortune,
+ Or to take arms against a sea of troubles,
+ And by opposing end them? To die: to sleep;
+ No more; and by a sleep to say we end
+ The heart-ache and the thousand natural shocks
+ That flesh is heir to, '\''tis a consummation
+ Devoutly to be wish'\''d.
+ EOF
+
+ git add a1 &&
+ test_tick &&
+ git commit -q -a -m initial &&
+
+ cat >>a1 <<-\EOF &&
+ Some title
+ ==========
+ To die, to sleep;
+ To sleep: perchance to dream: ay, there'\''s the rub;
+ For in that sleep of death what dreams may come
+ When we have shuffled off this mortal coil,
+ Must give us pause: there'\''s the respect
+ That makes calamity of so long life;
+ EOF
+
+ git checkout -b first &&
+ test_tick &&
+ git commit -q -a -m first &&
+
+ git checkout -b second master &&
+ git show first:a1 |
+ sed -e "s/To die, t/To die! T/" -e "s/Some title/Some Title/" >a1 &&
+ echo "* END *" >>a1 &&
+ test_tick &&
+ git commit -q -a -m second
+'
+
+test_expect_success 'nothing recorded without rerere' '
+ rm -rf .git/rr-cache &&
+ git config rerere.enabled false &&
+ test_must_fail git merge first &&
+ ! test -d .git/rr-cache
+'
+
+test_expect_success 'activate rerere, old style (conflicting merge)' '
+ git reset --hard &&
+ mkdir .git/rr-cache &&
+ test_might_fail git config --unset rerere.enabled &&
+ test_must_fail git merge first &&
+
+ sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
+ rr=.git/rr-cache/$sha1 &&
+ grep "^=======\$" $rr/preimage &&
+ ! test -f $rr/postimage &&
+ ! test -f $rr/thisimage
+'
+
+test_expect_success 'rerere.enabled works, too' '
+ rm -rf .git/rr-cache &&
+ git config rerere.enabled true &&
+ git reset --hard &&
+ test_must_fail git merge first &&
+
+ sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
+ rr=.git/rr-cache/$sha1 &&
+ grep ^=======$ $rr/preimage
+'
+
+test_expect_success 'set up rr-cache' '
+ rm -rf .git/rr-cache &&
+ git config rerere.enabled true &&
+ git reset --hard &&
+ test_must_fail git merge first &&
+ sha1=$(perl -pe "s/ .*//" .git/MERGE_RR) &&
+ rr=.git/rr-cache/$sha1
+'
+
+test_expect_success 'rr-cache looks sane' '
+ # no postimage or thisimage yet
+ ! test -f $rr/postimage &&
+ ! test -f $rr/thisimage &&
+
+ # preimage has right number of lines
+ cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
+ echo $cnt &&
+ test $cnt = 13
+'
+
+test_expect_success 'rerere diff' '
+ git show first:a1 >a1 &&
+ cat >expect <<-\EOF &&
+ --- a/a1
+ +++ b/a1
+ @@ -1,4 +1,4 @@
+ -Some Title
+ +Some title
+ ==========
+ Whether '\''tis nobler in the mind to suffer
+ The slings and arrows of outrageous fortune,
+ @@ -8,21 +8,11 @@
+ The heart-ache and the thousand natural shocks
+ That flesh is heir to, '\''tis a consummation
+ Devoutly to be wish'\''d.
+ -<<<<<<<
+ -Some Title
+ -==========
+ -To die! To sleep;
+ -=======
+ Some title
+ ==========
+ To die, to sleep;
+ ->>>>>>>
+ To sleep: perchance to dream: ay, there'\''s the rub;
+ For in that sleep of death what dreams may come
+ When we have shuffled off this mortal coil,
+ Must give us pause: there'\''s the respect
+ That makes calamity of so long life;
+ -<<<<<<<
+ -=======
+ -* END *
+ ->>>>>>>
+ EOF
+ git rerere diff >out &&
+ test_cmp expect out
+'
+
+test_expect_success 'rerere status' '
+ echo a1 >expect &&
+ git rerere status >out &&
+ test_cmp expect out
+'
+
+test_expect_success 'first postimage wins' '
+ git show first:a1 | sed "s/To die: t/To die! T/" >expect &&
+
+ git commit -q -a -m "prefer first over second" &&
+ test -f $rr/postimage &&
+
+ oldmtimepost=$(test-tool chmtime --get -60 $rr/postimage) &&
+
+ git checkout -b third master &&
+ git show second^:a1 | sed "s/To die: t/To die! T/" >a1 &&
+ git commit -q -a -m third &&
+
+ test_must_fail git merge first &&
+ # rerere kicked in
+ ! grep "^=======\$" a1 &&
+ test_cmp expect a1
+'
+
+test_expect_success 'rerere updates postimage timestamp' '
+ newmtimepost=$(test-tool chmtime --get $rr/postimage) &&
+ test $oldmtimepost -lt $newmtimepost
+'
+
+test_expect_success 'rerere clear' '
+ mv $rr/postimage .git/post-saved &&
+ echo "$sha1 a1" | perl -pe "y/\012/\000/" >.git/MERGE_RR &&
+ git rerere clear &&
+ ! test -d $rr
+'
+
+test_expect_success 'leftover directory' '
+ git reset --hard &&
+ mkdir -p $rr &&
+ test_must_fail git merge first &&
+ test -f $rr/preimage
+'
+
+test_expect_success 'missing preimage' '
+ git reset --hard &&
+ mkdir -p $rr &&
+ cp .git/post-saved $rr/postimage &&
+ test_must_fail git merge first &&
+ test -f $rr/preimage
+'
+
+test_expect_success 'set up for garbage collection tests' '
+ mkdir -p $rr &&
+ echo Hello >$rr/preimage &&
+ echo World >$rr/postimage &&
+
+ sha2=$(test_oid deadbeef) &&
+ rr2=.git/rr-cache/$sha2 &&
+ mkdir $rr2 &&
+ echo Hello >$rr2/preimage &&
+
+ almost_15_days_ago=$((60-15*86400)) &&
+ just_over_15_days_ago=$((-1-15*86400)) &&
+ almost_60_days_ago=$((60-60*86400)) &&
+ just_over_60_days_ago=$((-1-60*86400)) &&
+
+ test-tool chmtime =$just_over_60_days_ago $rr/preimage &&
+ test-tool chmtime =$almost_60_days_ago $rr/postimage &&
+ test-tool chmtime =$almost_15_days_ago $rr2/preimage
+'
+
+test_expect_success 'gc preserves young or recently used records' '
+ git rerere gc &&
+ test -f $rr/preimage &&
+ test -f $rr2/preimage
+'
+
+test_expect_success 'old records rest in peace' '
+ test-tool chmtime =$just_over_60_days_ago $rr/postimage &&
+ test-tool chmtime =$just_over_15_days_ago $rr2/preimage &&
+ git rerere gc &&
+ ! test -f $rr/preimage &&
+ ! test -f $rr2/preimage
+'
+
+rerere_gc_custom_expiry_test () {
+ five_days="$1" right_now="$2"
+ test_expect_success "rerere gc with custom expiry ($five_days, $right_now)" '
+ rm -fr .git/rr-cache &&
+ rr=.git/rr-cache/$ZERO_OID &&
+ mkdir -p "$rr" &&
+ >"$rr/preimage" &&
+ >"$rr/postimage" &&
+
+ two_days_ago=$((-2*86400)) &&
+ test-tool chmtime =$two_days_ago "$rr/preimage" &&
+ test-tool chmtime =$two_days_ago "$rr/postimage" &&
+
+ find .git/rr-cache -type f | sort >original &&
+
+ git -c "gc.rerereresolved=$five_days" \
+ -c "gc.rerereunresolved=$five_days" rerere gc &&
+ find .git/rr-cache -type f | sort >actual &&
+ test_cmp original actual &&
+
+ git -c "gc.rerereresolved=$five_days" \
+ -c "gc.rerereunresolved=$right_now" rerere gc &&
+ find .git/rr-cache -type f | sort >actual &&
+ test_cmp original actual &&
+
+ git -c "gc.rerereresolved=$right_now" \
+ -c "gc.rerereunresolved=$right_now" rerere gc &&
+ find .git/rr-cache -type f | sort >actual &&
+ test_must_be_empty actual
+ '
+}
+
+rerere_gc_custom_expiry_test 5 0
+
+rerere_gc_custom_expiry_test 5.days.ago now
+
+test_expect_success 'setup: file2 added differently in two branches' '
+ git reset --hard &&
+
+ git checkout -b fourth &&
+ echo Hallo >file2 &&
+ git add file2 &&
+ test_tick &&
+ git commit -m version1 &&
+
+ git checkout third &&
+ echo Bello >file2 &&
+ git add file2 &&
+ test_tick &&
+ git commit -m version2 &&
+
+ test_must_fail git merge fourth &&
+ echo Cello >file2 &&
+ git add file2 &&
+ git commit -m resolution
+'
+
+test_expect_success 'resolution was recorded properly' '
+ echo Cello >expected &&
+
+ git reset --hard HEAD~2 &&
+ git checkout -b fifth &&
+
+ echo Hallo >file3 &&
+ git add file3 &&
+ test_tick &&
+ git commit -m version1 &&
+
+ git checkout third &&
+ echo Bello >file3 &&
+ git add file3 &&
+ test_tick &&
+ git commit -m version2 &&
+ git tag version2 &&
+
+ test_must_fail git merge fifth &&
+ test_cmp expected file3 &&
+ test_must_fail git update-index --refresh
+'
+
+test_expect_success 'rerere.autoupdate' '
+ git config rerere.autoupdate true &&
+ git reset --hard &&
+ git checkout version2 &&
+ test_must_fail git merge fifth &&
+ git update-index --refresh
+'
+
+test_expect_success 'merge --rerere-autoupdate' '
+ test_might_fail git config --unset rerere.autoupdate &&
+ git reset --hard &&
+ git checkout version2 &&
+ test_must_fail git merge --rerere-autoupdate fifth &&
+ git update-index --refresh
+'
+
+test_expect_success 'merge --no-rerere-autoupdate' '
+ headblob=$(git rev-parse version2:file3) &&
+ mergeblob=$(git rev-parse fifth:file3) &&
+ cat >expected <<-EOF &&
+ 100644 $headblob 2 file3
+ 100644 $mergeblob 3 file3
+ EOF
+
+ git config rerere.autoupdate true &&
+ git reset --hard &&
+ git checkout version2 &&
+ test_must_fail git merge --no-rerere-autoupdate fifth &&
+ git ls-files -u >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'set up an unresolved merge' '
+ headblob=$(git rev-parse version2:file3) &&
+ mergeblob=$(git rev-parse fifth:file3) &&
+ cat >expected.unresolved <<-EOF &&
+ 100644 $headblob 2 file3
+ 100644 $mergeblob 3 file3
+ EOF
+
+ test_might_fail git config --unset rerere.autoupdate &&
+ git reset --hard &&
+ git checkout version2 &&
+ fifth=$(git rev-parse fifth) &&
+ echo "$fifth branch fifth of ." |
+ git fmt-merge-msg >msg &&
+ ancestor=$(git merge-base version2 fifth) &&
+ test_must_fail git merge-recursive "$ancestor" -- HEAD fifth &&
+
+ git ls-files --stage >failedmerge &&
+ cp file3 file3.conflict &&
+
+ git ls-files -u >actual &&
+ test_cmp expected.unresolved actual
+'
+
+test_expect_success 'explicit rerere' '
+ test_might_fail git config --unset rerere.autoupdate &&
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ test_must_fail git update-index --refresh -q &&
+
+ git rerere &&
+ git ls-files -u >actual &&
+ test_cmp expected.unresolved actual
+'
+
+test_expect_success 'explicit rerere with autoupdate' '
+ git config rerere.autoupdate true &&
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ test_must_fail git update-index --refresh -q &&
+
+ git rerere &&
+ git update-index --refresh
+'
+
+test_expect_success 'explicit rerere --rerere-autoupdate overrides' '
+ git config rerere.autoupdate false &&
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ git rerere &&
+ git ls-files -u >actual1 &&
+
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ git rerere --rerere-autoupdate &&
+ git update-index --refresh &&
+
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ git rerere --rerere-autoupdate --no-rerere-autoupdate &&
+ git ls-files -u >actual2 &&
+
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ git rerere --rerere-autoupdate --no-rerere-autoupdate --rerere-autoupdate &&
+ git update-index --refresh &&
+
+ test_cmp expected.unresolved actual1 &&
+ test_cmp expected.unresolved actual2
+'
+
+test_expect_success 'rerere --no-no-rerere-autoupdate' '
+ git rm -fr --cached . &&
+ git update-index --index-info <failedmerge &&
+ cp file3.conflict file3 &&
+ test_must_fail git rerere --no-no-rerere-autoupdate 2>err &&
+ test_i18ngrep [Uu]sage err &&
+ test_must_fail git update-index --refresh
+'
+
+test_expect_success 'rerere -h' '
+ test_must_fail git rerere -h >help &&
+ test_i18ngrep [Uu]sage help
+'
+
+concat_insert () {
+ last=$1
+ shift
+ cat early && printf "%s\n" "$@" && cat late "$last"
+}
+
+count_pre_post () {
+ find .git/rr-cache/ -type f -name "preimage*" >actual &&
+ test_line_count = "$1" actual &&
+ find .git/rr-cache/ -type f -name "postimage*" >actual &&
+ test_line_count = "$2" actual
+}
+
+merge_conflict_resolve () {
+ git reset --hard &&
+ test_must_fail git merge six.1 &&
+ # Resolution is to replace 7 with 6.1 and 6.2 (i.e. take both)
+ concat_insert short 6.1 6.2 >file1 &&
+ concat_insert long 6.1 6.2 >file2
+}
+
+test_expect_success 'multiple identical conflicts' '
+ rm -fr .git/rr-cache &&
+ mkdir .git/rr-cache &&
+ git reset --hard &&
+
+ test_seq 1 6 >early &&
+ >late &&
+ test_seq 11 15 >short &&
+ test_seq 111 120 >long &&
+ concat_insert short >file1 &&
+ concat_insert long >file2 &&
+ git add file1 file2 &&
+ git commit -m base &&
+ git tag base &&
+ git checkout -b six.1 &&
+ concat_insert short 6.1 >file1 &&
+ concat_insert long 6.1 >file2 &&
+ git add file1 file2 &&
+ git commit -m 6.1 &&
+ git checkout -b six.2 HEAD^ &&
+ concat_insert short 6.2 >file1 &&
+ concat_insert long 6.2 >file2 &&
+ git add file1 file2 &&
+ git commit -m 6.2 &&
+
+ # At this point, six.1 and six.2
+ # - derive from common ancestor that has two files
+ # 1...6 7 11..15 (file1) and 1...6 7 111..120 (file2)
+ # - six.1 replaces these 7s with 6.1
+ # - six.2 replaces these 7s with 6.2
+
+ merge_conflict_resolve &&
+
+ # Check that rerere knows that file1 and file2 have conflicts
+
+ printf "%s\n" file1 file2 >expect &&
+ git ls-files -u | sed -e "s/^.* //" | sort -u >actual &&
+ test_cmp expect actual &&
+
+ git rerere status | sort >actual &&
+ 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 &&
+ git rerere remaining >actual &&
+ test_must_be_empty 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 &&
+
+ git rerere remaining >actual &&
+ test_must_be_empty 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_expect_success 'setup simple stage 1 handling' '
+ test_create_repo stage_1_handling &&
+ (
+ cd stage_1_handling &&
+
+ test_seq 1 10 >original &&
+ git add original &&
+ git commit -m original &&
+
+ git checkout -b A master &&
+ git mv original A &&
+ git commit -m "rename to A" &&
+
+ git checkout -b B master &&
+ git mv original B &&
+ git commit -m "rename to B"
+ )
+'
+
+test_expect_success 'test simple stage 1 handling' '
+ (
+ cd stage_1_handling &&
+
+ git config rerere.enabled true &&
+ git checkout A^0 &&
+ test_must_fail git merge B^0
+ )
+'
+
+test_done