t/t4200-rerere.sh - jrn/git - Git at Google

 #!/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_PATH" -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_PATH" -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_PATH" -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-chmtime -v -60 $rr/postimage | cut -f 1) &&

 	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 pull . first &&
 	# rerere kicked in
 	! grep "^=======\$" a1 &&
 	test_cmp expect a1
 '

 test_expect_success 'rerere updates postimage timestamp' '
 	newmtimepost=$(test-chmtime -v +0 $rr/postimage | cut -f 1) &&
 	test $oldmtimepost -lt $newmtimepost
 '

 test_expect_success 'rerere clear' '
 	rm $rr/postimage &&
 	echo "$sha1	a1" | "$PERL_PATH" -pe "y/\012/\000/" >.git/MERGE_RR &&
 	git rerere clear &&
 	! test -d $rr
 '

 test_expect_success 'set up for garbage collection tests' '
 	mkdir -p $rr &&
 	echo Hello >$rr/preimage &&
 	echo World >$rr/postimage &&

 	sha2=4000000000000000000000000000000000000000 &&
 	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-chmtime =$just_over_60_days_ago $rr/preimage &&
 	test-chmtime =$almost_60_days_ago $rr/postimage &&
 	test-chmtime =$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-chmtime =$just_over_60_days_ago $rr/postimage &&
 	test-chmtime =$just_over_15_days_ago $rr2/preimage &&
 	git rerere gc &&
 	! test -f $rr/preimage &&
 	! test -f $rr2/preimage
 '

 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
 '

 test_done
	#!/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_PATH" -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_PATH" -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_PATH" -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-chmtime -v -60 $rr/postimage \| cut -f 1) &&

	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 pull . first &&
	# rerere kicked in
	! grep "^=======\$" a1 &&
	test_cmp expect a1
	'

	test_expect_success 'rerere updates postimage timestamp' '
	newmtimepost=$(test-chmtime -v +0 $rr/postimage \| cut -f 1) &&
	test $oldmtimepost -lt $newmtimepost
	'

	test_expect_success 'rerere clear' '
	rm $rr/postimage &&
	echo "$sha1 a1" \| "$PERL_PATH" -pe "y/\012/\000/" >.git/MERGE_RR &&
	git rerere clear &&
	! test -d $rr
	'

	test_expect_success 'set up for garbage collection tests' '
	mkdir -p $rr &&
	echo Hello >$rr/preimage &&
	echo World >$rr/postimage &&

	sha2=4000000000000000000000000000000000000000 &&
	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-chmtime =$just_over_60_days_ago $rr/preimage &&
	test-chmtime =$almost_60_days_ago $rr/postimage &&
	test-chmtime =$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-chmtime =$just_over_60_days_ago $rr/postimage &&
	test-chmtime =$just_over_15_days_ago $rr2/preimage &&
	git rerere gc &&
	! test -f $rr/preimage &&
	! test -f $rr2/preimage
	'

	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
	'

	test_done