t/t7501-commit.sh - git - Git at Google

 #!/bin/sh
 #
 # Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
 #

 # FIXME: Test the various index usages, -i and -o, test reflog,
 # signoff

 test_description='git commit'
 . ./test-lib.sh
 . "$TEST_DIRECTORY/diff-lib.sh"

 author='The Real Author <someguy@his.email.org>'

 test_tick

 test_expect_success 'initial status' '
 	echo bongo bongo >file &&
 	git add file &&
 	git status >actual &&
 	test_i18ngrep "Initial commit" actual
 '

 test_expect_success 'fail initial amend' '
 	test_must_fail git commit --amend
 '

 test_expect_success 'setup: initial commit' '
 	git commit -m initial
 '

 test_expect_success '-m and -F do not mix' '
 	test_must_fail git commit -m foo -m bar -F file
 '

 test_expect_success '-m and -C do not mix' '
 	test_must_fail git commit -C HEAD -m illegal
 '

 test_expect_success 'paths and -a do not mix' '
 	echo King of the bongo >file &&
 	test_must_fail git commit -m foo -a file
 '

 test_expect_success PERL 'can use paths with --interactive' '
 	echo bong-o-bong >file &&
 	# 2: update, 1:st path, that is all, 7: quit
 	( echo 2; echo 1; echo; echo 7 ) |
 	git commit -m foo --interactive file &&
 	git reset --hard HEAD^
 '

 test_expect_success 'using invalid commit with -C' '
 	test_must_fail git commit -C bogus
 '

 test_expect_success 'nothing to commit' '
 	test_must_fail git commit -m initial
 '

 test_expect_success 'setup: non-initial commit' '
 	echo bongo bongo bongo >file &&
 	git commit -m next -a
 '

 test_expect_success 'commit message from non-existing file' '
 	echo more bongo: bongo bongo bongo bongo >file &&
 	test_must_fail git commit -F gah -a
 '

 test_expect_success 'empty commit message' '
 	# Empty except stray tabs and spaces on a few lines.
 	sed -e "s/@//g" >msg <<-\EOF &&
 		@		@
 		@@
 		@  @
 		@Signed-off-by: hula@
 	EOF
 	test_must_fail git commit -F msg -a
 '

 test_expect_success 'setup: commit message from file' '
 	echo this is the commit message, coming from a file >msg &&
 	git commit -F msg -a
 '

 test_expect_success 'amend commit' '
 	cat >editor <<-\EOF &&
 	#!/bin/sh
 	sed -e "s/a file/an amend commit/g" < "$1" > "$1-"
 	mv "$1-" "$1"
 	EOF
 	chmod 755 editor &&
 	EDITOR=./editor git commit --amend
 '

 test_expect_success 'set up editor' '
 	cat >editor <<-\EOF &&
 	#!/bin/sh
 	sed -e "s/unamended/amended/g" <"$1" >"$1-"
 	mv "$1-" "$1"
 	EOF
 	chmod 755 editor
 '

 test_expect_success 'amend without launching editor' '
 	echo unamended >expect &&
 	git commit --allow-empty -m "unamended" &&
 	echo needs more bongo >file &&
 	git add file &&
 	EDITOR=./editor git commit --no-edit --amend &&
 	git diff --exit-code HEAD -- file &&
 	git diff-tree -s --format=%s HEAD >msg &&
 	test_cmp expect msg
 '

 test_expect_success '--amend --edit' '
 	echo amended >expect &&
 	git commit --allow-empty -m "unamended" &&
 	echo bongo again >file &&
 	git add file &&
 	EDITOR=./editor git commit --edit --amend &&
 	git diff-tree -s --format=%s HEAD >msg &&
 	test_cmp expect msg
 '

 test_expect_success '-m --edit' '
 	echo amended >expect &&
 	git commit --allow-empty -m buffer &&
 	echo bongo bongo >file &&
 	git add file &&
 	EDITOR=./editor git commit -m unamended --edit &&
 	git diff-tree -s  --format=%s HEAD >msg &&
 	test_cmp expect msg
 '

 test_expect_success '-m and -F do not mix' '
 	echo enough with the bongos >file &&
 	test_must_fail git commit -F msg -m amending .
 '

 test_expect_success 'using message from other commit' '
 	git commit -C HEAD^ .
 '

 test_expect_success 'editing message from other commit' '
 	cat >editor <<-\EOF &&
 	#!/bin/sh
 	sed -e "s/amend/older/g"  < "$1" > "$1-"
 	mv "$1-" "$1"
 	EOF
 	chmod 755 editor &&
 	echo hula hula >file &&
 	EDITOR=./editor git commit -c HEAD^ -a
 '

 test_expect_success 'message from stdin' '
 	echo silly new contents >file &&
 	echo commit message from stdin |
 	git commit -F - -a
 '

 test_expect_success 'overriding author from command line' '
 	echo gak >file &&
 	git commit -m author \
 		--author "Rubber Duck <rduck@convoy.org>" -a >output 2>&1 &&
 	grep Rubber.Duck output
 '

 test_expect_success PERL 'interactive add' '
 	echo 7 |
 	git commit --interactive |
 	grep "What now"
 '

 test_expect_success PERL "commit --interactive doesn't change index if editor aborts" '
 	echo zoo >file &&
 	test_must_fail git diff --exit-code >diff1 &&
 	(echo u ; echo "*" ; echo q) |
 	(
 		EDITOR=: &&
 		export EDITOR &&
 		test_must_fail git commit --interactive
 	) &&
 	git diff >diff2 &&
 	compare_diff_patch diff1 diff2
 '

 test_expect_success 'editor not invoked if -F is given' '
 	cat >editor <<-\EOF &&
 	#!/bin/sh
 	sed -e s/good/bad/g <"$1" >"$1-"
 	mv "$1-" "$1"
 	EOF
 	chmod 755 editor &&

 	echo A good commit message. >msg &&
 	echo moo >file &&

 	EDITOR=./editor git commit -a -F msg &&
 	git show -s --pretty=format:%s >subject &&
 	grep -q good subject &&

 	echo quack >file &&
 	echo Another good message. |
 	EDITOR=./editor git commit -a -F - &&
 	git show -s --pretty=format:%s >subject &&
 	grep -q good subject
 '

 test_expect_success 'partial commit that involves removal (1)' '

 	git rm --cached file &&
 	mv file elif &&
 	git add elif &&
 	git commit -m "Partial: add elif" elif &&
 	git diff-tree --name-status HEAD^ HEAD >current &&
 	echo "A	elif" >expected &&
 	test_cmp expected current

 '

 test_expect_success 'partial commit that involves removal (2)' '

 	git commit -m "Partial: remove file" file &&
 	git diff-tree --name-status HEAD^ HEAD >current &&
 	echo "D	file" >expected &&
 	test_cmp expected current

 '

 test_expect_success 'partial commit that involves removal (3)' '

 	git rm --cached elif &&
 	echo elif >elif &&
 	git commit -m "Partial: modify elif" elif &&
 	git diff-tree --name-status HEAD^ HEAD >current &&
 	echo "M	elif" >expected &&
 	test_cmp expected current

 '

 test_expect_success 'amend commit to fix author' '

 	oldtick=$GIT_AUTHOR_DATE &&
 	test_tick &&
 	git reset --hard &&
 	git cat-file -p HEAD |
 	sed -e "s/author.*/author $author $oldtick/" \
 		-e "s/^\(committer.*> \).*$/\1$GIT_COMMITTER_DATE/" > \
 		expected &&
 	git commit --amend --author="$author" &&
 	git cat-file -p HEAD > current &&
 	test_cmp expected current

 '

 test_expect_success 'amend commit to fix date' '

 	test_tick &&
 	newtick=$GIT_AUTHOR_DATE &&
 	git reset --hard &&
 	git cat-file -p HEAD |
 	sed -e "s/author.*/author $author $newtick/" \
 		-e "s/^\(committer.*> \).*$/\1$GIT_COMMITTER_DATE/" > \
 		expected &&
 	git commit --amend --date="$newtick" &&
 	git cat-file -p HEAD > current &&
 	test_cmp expected current

 '

 test_expect_success 'commit complains about bogus date' '
 	test_must_fail git commit --amend --date=10.11.2010
 '

 test_expect_success 'sign off (1)' '

 	echo 1 >positive &&
 	git add positive &&
 	git commit -s -m "thank you" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
 	(
 		echo thank you
 		echo
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
 	test_cmp expected actual

 '

 test_expect_success 'sign off (2)' '

 	echo 2 >positive &&
 	git add positive &&
 	existing="Signed-off-by: Watch This <watchthis@example.com>" &&
 	git commit -s -m "thank you

 $existing" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
 	(
 		echo thank you
 		echo
 		echo $existing
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
 	test_cmp expected actual

 '

 test_expect_success 'signoff gap' '

 	echo 3 >positive &&
 	git add positive &&
 	alt="Alt-RFC-822-Header: Value" &&
 	git commit -s -m "welcome

 $alt" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" > actual &&
 	(
 		echo welcome
 		echo
 		echo $alt
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
 	test_cmp expected actual
 '

 test_expect_success 'signoff gap 2' '

 	echo 4 >positive &&
 	git add positive &&
 	alt="fixed: 34" &&
 	git commit -s -m "welcome

 We have now
 $alt" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" > actual &&
 	(
 		echo welcome
 		echo
 		echo We have now
 		echo $alt
 		echo
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
 	test_cmp expected actual
 '

 test_expect_success 'multiple -m' '

 	>negative &&
 	git add negative &&
 	git commit -m "one" -m "two" -m "three" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
 	(
 		echo one
 		echo
 		echo two
 		echo
 		echo three
 	) >expected &&
 	test_cmp expected actual

 '

 test_expect_success 'amend commit to fix author' '

 	oldtick=$GIT_AUTHOR_DATE &&
 	test_tick &&
 	git reset --hard &&
 	git cat-file -p HEAD |
 	sed -e "s/author.*/author $author $oldtick/" \
 		-e "s/^\(committer.*> \).*$/\1$GIT_COMMITTER_DATE/" > \
 		expected &&
 	git commit --amend --author="$author" &&
 	git cat-file -p HEAD > current &&
 	test_cmp expected current

 '

 test_expect_success 'git commit <file> with dirty index' '
 	echo tacocat > elif &&
 	echo tehlulz > chz &&
 	git add chz &&
 	git commit elif -m "tacocat is a palindrome" &&
 	git show --stat | grep elif &&
 	git diff --cached | grep chz
 '

 test_expect_success 'same tree (single parent)' '

 	git reset --hard &&
 	test_must_fail git commit -m empty

 '

 test_expect_success 'same tree (single parent) --allow-empty' '

 	git commit --allow-empty -m "forced empty" &&
 	git cat-file commit HEAD | grep forced

 '

 test_expect_success 'same tree (merge and amend merge)' '

 	git checkout -b side HEAD^ &&
 	echo zero >zero &&
 	git add zero &&
 	git commit -m "add zero" &&
 	git checkout master &&

 	git merge -s ours side -m "empty ok" &&
 	git diff HEAD^ HEAD >actual &&
 	: >expected &&
 	test_cmp expected actual &&

 	git commit --amend -m "empty really ok" &&
 	git diff HEAD^ HEAD >actual &&
 	: >expected &&
 	test_cmp expected actual

 '

 test_expect_success 'amend using the message from another commit' '

 	git reset --hard &&
 	test_tick &&
 	git commit --allow-empty -m "old commit" &&
 	old=$(git rev-parse --verify HEAD) &&
 	test_tick &&
 	git commit --allow-empty -m "new commit" &&
 	new=$(git rev-parse --verify HEAD) &&
 	test_tick &&
 	git commit --allow-empty --amend -C "$old" &&
 	git show --pretty="format:%ad %s" "$old" >expected &&
 	git show --pretty="format:%ad %s" HEAD >actual &&
 	test_cmp expected actual

 '

 test_expect_success 'amend using the message from a commit named with tag' '

 	git reset --hard &&
 	test_tick &&
 	git commit --allow-empty -m "old commit" &&
 	old=$(git rev-parse --verify HEAD) &&
 	git tag -a -m "tag on old" tagged-old HEAD &&
 	test_tick &&
 	git commit --allow-empty -m "new commit" &&
 	new=$(git rev-parse --verify HEAD) &&
 	test_tick &&
 	git commit --allow-empty --amend -C tagged-old &&
 	git show --pretty="format:%ad %s" "$old" >expected &&
 	git show --pretty="format:%ad %s" HEAD >actual &&
 	test_cmp expected actual

 '

 test_expect_success 'amend can copy notes' '

 	git config notes.rewrite.amend true &&
 	git config notes.rewriteRef "refs/notes/*" &&
 	test_commit foo &&
 	git notes add -m"a note" &&
 	test_tick &&
 	git commit --amend -m"new foo" &&
 	test "$(git notes show)" = "a note"

 '

 test_done
	#!/bin/sh
	#
	# Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
	#

	# FIXME: Test the various index usages, -i and -o, test reflog,
	# signoff

	test_description='git commit'
	. ./test-lib.sh
	. "$TEST_DIRECTORY/diff-lib.sh"

	author='The Real Author <someguy@his.email.org>'

	test_tick

	test_expect_success 'initial status' '
	echo bongo bongo >file &&
	git add file &&
	git status >actual &&
	test_i18ngrep "Initial commit" actual
	'

	test_expect_success 'fail initial amend' '
	test_must_fail git commit --amend
	'

	test_expect_success 'setup: initial commit' '
	git commit -m initial
	'

	test_expect_success '-m and -F do not mix' '
	test_must_fail git commit -m foo -m bar -F file
	'

	test_expect_success '-m and -C do not mix' '
	test_must_fail git commit -C HEAD -m illegal
	'

	test_expect_success 'paths and -a do not mix' '
	echo King of the bongo >file &&
	test_must_fail git commit -m foo -a file
	'

	test_expect_success PERL 'can use paths with --interactive' '
	echo bong-o-bong >file &&
	# 2: update, 1:st path, that is all, 7: quit
	( echo 2; echo 1; echo; echo 7 ) \|
	git commit -m foo --interactive file &&
	git reset --hard HEAD^
	'

	test_expect_success 'using invalid commit with -C' '
	test_must_fail git commit -C bogus
	'

	test_expect_success 'nothing to commit' '
	test_must_fail git commit -m initial
	'

	test_expect_success 'setup: non-initial commit' '
	echo bongo bongo bongo >file &&
	git commit -m next -a
	'

	test_expect_success 'commit message from non-existing file' '
	echo more bongo: bongo bongo bongo bongo >file &&
	test_must_fail git commit -F gah -a
	'

	test_expect_success 'empty commit message' '
	# Empty except stray tabs and spaces on a few lines.
	sed -e "s/@//g" >msg <<-\EOF &&
	@ @
	@@
	@ @
	@Signed-off-by: hula@
	EOF
	test_must_fail git commit -F msg -a
	'

	test_expect_success 'setup: commit message from file' '
	echo this is the commit message, coming from a file >msg &&
	git commit -F msg -a
	'

	test_expect_success 'amend commit' '
	cat >editor <<-\EOF &&
	#!/bin/sh
	sed -e "s/a file/an amend commit/g" < "$1" > "$1-"
	mv "$1-" "$1"
	EOF
	chmod 755 editor &&
	EDITOR=./editor git commit --amend
	'

	test_expect_success 'set up editor' '
	cat >editor <<-\EOF &&
	#!/bin/sh
	sed -e "s/unamended/amended/g" <"$1" >"$1-"
	mv "$1-" "$1"
	EOF
	chmod 755 editor
	'

	test_expect_success 'amend without launching editor' '
	echo unamended >expect &&
	git commit --allow-empty -m "unamended" &&
	echo needs more bongo >file &&
	git add file &&
	EDITOR=./editor git commit --no-edit --amend &&
	git diff --exit-code HEAD -- file &&
	git diff-tree -s --format=%s HEAD >msg &&
	test_cmp expect msg
	'

	test_expect_success '--amend --edit' '
	echo amended >expect &&
	git commit --allow-empty -m "unamended" &&
	echo bongo again >file &&
	git add file &&
	EDITOR=./editor git commit --edit --amend &&
	git diff-tree -s --format=%s HEAD >msg &&
	test_cmp expect msg
	'

	test_expect_success '-m --edit' '
	echo amended >expect &&
	git commit --allow-empty -m buffer &&
	echo bongo bongo >file &&
	git add file &&
	EDITOR=./editor git commit -m unamended --edit &&
	git diff-tree -s --format=%s HEAD >msg &&
	test_cmp expect msg
	'

	test_expect_success '-m and -F do not mix' '
	echo enough with the bongos >file &&
	test_must_fail git commit -F msg -m amending .
	'

	test_expect_success 'using message from other commit' '
	git commit -C HEAD^ .
	'

	test_expect_success 'editing message from other commit' '
	cat >editor <<-\EOF &&
	#!/bin/sh
	sed -e "s/amend/older/g" < "$1" > "$1-"
	mv "$1-" "$1"
	EOF
	chmod 755 editor &&
	echo hula hula >file &&
	EDITOR=./editor git commit -c HEAD^ -a
	'

	test_expect_success 'message from stdin' '
	echo silly new contents >file &&
	echo commit message from stdin \|
	git commit -F - -a
	'

	test_expect_success 'overriding author from command line' '
	echo gak >file &&
	git commit -m author \
	--author "Rubber Duck <rduck@convoy.org>" -a >output 2>&1 &&
	grep Rubber.Duck output
	'

	test_expect_success PERL 'interactive add' '
	echo 7 \|
	git commit --interactive \|
	grep "What now"
	'

	test_expect_success PERL "commit --interactive doesn't change index if editor aborts" '
	echo zoo >file &&
	test_must_fail git diff --exit-code >diff1 &&
	(echo u ; echo "*" ; echo q) \|
	(
	EDITOR=: &&
	export EDITOR &&
	test_must_fail git commit --interactive
	) &&
	git diff >diff2 &&
	compare_diff_patch diff1 diff2
	'

	test_expect_success 'editor not invoked if -F is given' '
	cat >editor <<-\EOF &&
	#!/bin/sh
	sed -e s/good/bad/g <"$1" >"$1-"
	mv "$1-" "$1"
	EOF
	chmod 755 editor &&

	echo A good commit message. >msg &&
	echo moo >file &&

	EDITOR=./editor git commit -a -F msg &&
	git show -s --pretty=format:%s >subject &&
	grep -q good subject &&

	echo quack >file &&
	echo Another good message. \|
	EDITOR=./editor git commit -a -F - &&
	git show -s --pretty=format:%s >subject &&
	grep -q good subject
	'

	test_expect_success 'partial commit that involves removal (1)' '

	git rm --cached file &&
	mv file elif &&
	git add elif &&
	git commit -m "Partial: add elif" elif &&
	git diff-tree --name-status HEAD^ HEAD >current &&
	echo "A elif" >expected &&
	test_cmp expected current

	'

	test_expect_success 'partial commit that involves removal (2)' '

	git commit -m "Partial: remove file" file &&
	git diff-tree --name-status HEAD^ HEAD >current &&
	echo "D file" >expected &&
	test_cmp expected current

	'

	test_expect_success 'partial commit that involves removal (3)' '

	git rm --cached elif &&
	echo elif >elif &&
	git commit -m "Partial: modify elif" elif &&
	git diff-tree --name-status HEAD^ HEAD >current &&
	echo "M elif" >expected &&
	test_cmp expected current

	'

	test_expect_success 'amend commit to fix author' '

	oldtick=$GIT_AUTHOR_DATE &&
	test_tick &&
	git reset --hard &&
	git cat-file -p HEAD \|
	sed -e "s/author.*/author $author $oldtick/" \
	-e "s/^\(committer.> \).$/\1$GIT_COMMITTER_DATE/" > \
	expected &&
	git commit --amend --author="$author" &&
	git cat-file -p HEAD > current &&
	test_cmp expected current

	'

	test_expect_success 'amend commit to fix date' '

	test_tick &&
	newtick=$GIT_AUTHOR_DATE &&
	git reset --hard &&
	git cat-file -p HEAD \|
	sed -e "s/author.*/author $author $newtick/" \
	-e "s/^\(committer.> \).$/\1$GIT_COMMITTER_DATE/" > \
	expected &&
	git commit --amend --date="$newtick" &&
	git cat-file -p HEAD > current &&
	test_cmp expected current

	'

	test_expect_success 'commit complains about bogus date' '
	test_must_fail git commit --amend --date=10.11.2010
	'

	test_expect_success 'sign off (1)' '

	echo 1 >positive &&
	git add positive &&
	git commit -s -m "thank you" &&
	git cat-file commit HEAD \| sed -e "1,/^\$/d" >actual &&
	(
	echo thank you
	echo
	git var GIT_COMMITTER_IDENT \|
	sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
	) >expected &&
	test_cmp expected actual

	'

	test_expect_success 'sign off (2)' '

	echo 2 >positive &&
	git add positive &&
	existing="Signed-off-by: Watch This <watchthis@example.com>" &&
	git commit -s -m "thank you

	$existing" &&
	git cat-file commit HEAD \| sed -e "1,/^\$/d" >actual &&
	(
	echo thank you
	echo
	echo $existing
	git var GIT_COMMITTER_IDENT \|
	sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
	) >expected &&
	test_cmp expected actual

	'

	test_expect_success 'signoff gap' '

	echo 3 >positive &&
	git add positive &&
	alt="Alt-RFC-822-Header: Value" &&
	git commit -s -m "welcome

	$alt" &&
	git cat-file commit HEAD \| sed -e "1,/^\$/d" > actual &&
	(
	echo welcome
	echo
	echo $alt
	git var GIT_COMMITTER_IDENT \|
	sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
	) >expected &&
	test_cmp expected actual
	'

	test_expect_success 'signoff gap 2' '

	echo 4 >positive &&
	git add positive &&
	alt="fixed: 34" &&
	git commit -s -m "welcome

	We have now
	$alt" &&
	git cat-file commit HEAD \| sed -e "1,/^\$/d" > actual &&
	(
	echo welcome
	echo
	echo We have now
	echo $alt
	echo
	git var GIT_COMMITTER_IDENT \|
	sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
	) >expected &&
	test_cmp expected actual
	'

	test_expect_success 'multiple -m' '

	>negative &&
	git add negative &&
	git commit -m "one" -m "two" -m "three" &&
	git cat-file commit HEAD \| sed -e "1,/^\$/d" >actual &&
	(
	echo one
	echo
	echo two
	echo
	echo three
	) >expected &&
	test_cmp expected actual

	'

	test_expect_success 'amend commit to fix author' '

	oldtick=$GIT_AUTHOR_DATE &&
	test_tick &&
	git reset --hard &&
	git cat-file -p HEAD \|
	sed -e "s/author.*/author $author $oldtick/" \
	-e "s/^\(committer.> \).$/\1$GIT_COMMITTER_DATE/" > \
	expected &&
	git commit --amend --author="$author" &&
	git cat-file -p HEAD > current &&
	test_cmp expected current

	'

	test_expect_success 'git commit <file> with dirty index' '
	echo tacocat > elif &&
	echo tehlulz > chz &&
	git add chz &&
	git commit elif -m "tacocat is a palindrome" &&
	git show --stat \| grep elif &&
	git diff --cached \| grep chz
	'

	test_expect_success 'same tree (single parent)' '

	git reset --hard &&
	test_must_fail git commit -m empty

	'

	test_expect_success 'same tree (single parent) --allow-empty' '

	git commit --allow-empty -m "forced empty" &&
	git cat-file commit HEAD \| grep forced

	'

	test_expect_success 'same tree (merge and amend merge)' '

	git checkout -b side HEAD^ &&
	echo zero >zero &&
	git add zero &&
	git commit -m "add zero" &&
	git checkout master &&

	git merge -s ours side -m "empty ok" &&
	git diff HEAD^ HEAD >actual &&
	: >expected &&
	test_cmp expected actual &&

	git commit --amend -m "empty really ok" &&
	git diff HEAD^ HEAD >actual &&
	: >expected &&
	test_cmp expected actual

	'

	test_expect_success 'amend using the message from another commit' '

	git reset --hard &&
	test_tick &&
	git commit --allow-empty -m "old commit" &&
	old=$(git rev-parse --verify HEAD) &&
	test_tick &&
	git commit --allow-empty -m "new commit" &&
	new=$(git rev-parse --verify HEAD) &&
	test_tick &&
	git commit --allow-empty --amend -C "$old" &&
	git show --pretty="format:%ad %s" "$old" >expected &&
	git show --pretty="format:%ad %s" HEAD >actual &&
	test_cmp expected actual

	'

	test_expect_success 'amend using the message from a commit named with tag' '

	git reset --hard &&
	test_tick &&
	git commit --allow-empty -m "old commit" &&
	old=$(git rev-parse --verify HEAD) &&
	git tag -a -m "tag on old" tagged-old HEAD &&
	test_tick &&
	git commit --allow-empty -m "new commit" &&
	new=$(git rev-parse --verify HEAD) &&
	test_tick &&
	git commit --allow-empty --amend -C tagged-old &&
	git show --pretty="format:%ad %s" "$old" >expected &&
	git show --pretty="format:%ad %s" HEAD >actual &&
	test_cmp expected actual

	'

	test_expect_success 'amend can copy notes' '

	git config notes.rewrite.amend true &&
	git config notes.rewriteRef "refs/notes/*" &&
	test_commit foo &&
	git notes add -m"a note" &&
	test_tick &&
	git commit --amend -m"new foo" &&
	test "$(git notes show)" = "a note"

	'

	test_done