[PATCH 1/5] t6036, t6042: use test_create_repo to keep tests independent

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These tests used pretty strong measures to get a clean slate:
        git rm -rf . &&
        git clean -fdqx &&
        rm -rf .git &&
        git init &&
It's easier, safer (what if a previous test has a bug and accidentally
changes into a directory outside the test path?), and allows re-inspecting
test setup later if we instead just use test_create_repo to put different
tests into separate sub-repositories.

Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
Best viewed with `git diff -w`...

 t/t6036-recursive-corner-cases.sh    | 854 ++++++++++++++------------
 t/t6042-merge-rename-corner-cases.sh | 887 ++++++++++++++-------------
 2 files changed, 926 insertions(+), 815 deletions(-)

diff --git a/t/t6036-recursive-corner-cases.sh b/t/t6036-recursive-corner-cases.sh
index 18aa88b5c0..cfe6a99771 100755
--- a/t/t6036-recursive-corner-cases.sh
+++ b/t/t6036-recursive-corner-cases.sh
@@ -21,51 +21,60 @@ get_clean_checkout () {
 #
 
 test_expect_success 'setup basic criss-cross + rename with no modifications' '
-	ten="0 1 2 3 4 5 6 7 8 9" &&
-	for i in $ten
-	do
-		echo line $i in a sample file
-	done >one &&
-	for i in $ten
-	do
-		echo line $i in another sample file
-	done >two &&
-	git add one two &&
-	test_tick && git commit -m initial &&
-
-	git branch L1 &&
-	git checkout -b R1 &&
-	git mv one three &&
-	test_tick && git commit -m R1 &&
-
-	git checkout L1 &&
-	git mv two three &&
-	test_tick && git commit -m L1 &&
-
-	git checkout L1^0 &&
-	test_tick && git merge -s ours R1 &&
-	git tag L2 &&
-
-	git checkout R1^0 &&
-	test_tick && git merge -s ours L1 &&
-	git tag R2
+	test_create_repo basic-rename &&
+	(
+		cd basic-rename &&
+
+		ten="0 1 2 3 4 5 6 7 8 9" &&
+		for i in $ten
+		do
+			echo line $i in a sample file
+		done >one &&
+		for i in $ten
+		do
+			echo line $i in another sample file
+		done >two &&
+		git add one two &&
+		test_tick && git commit -m initial &&
+
+		git branch L1 &&
+		git checkout -b R1 &&
+		git mv one three &&
+		test_tick && git commit -m R1 &&
+
+		git checkout L1 &&
+		git mv two three &&
+		test_tick && git commit -m L1 &&
+
+		git checkout L1^0 &&
+		test_tick && git merge -s ours R1 &&
+		git tag L2 &&
+
+		git checkout R1^0 &&
+		test_tick && git merge -s ours L1 &&
+		git tag R2
+	)
 '
 
 test_expect_success 'merge simple rename+criss-cross with no modifications' '
-	git reset --hard &&
-	git checkout L2^0 &&
+	(
+		cd basic-rename &&
+
+		git reset --hard &&
+		git checkout L2^0 &&
 
-	test_must_fail git merge -s recursive R2^0 &&
+		test_must_fail git merge -s recursive R2^0 &&
 
-	test 2 = $(git ls-files -s | wc -l) &&
-	test 2 = $(git ls-files -u | wc -l) &&
-	test 2 = $(git ls-files -o | wc -l) &&
+		test 2 = $(git ls-files -s | wc -l) &&
+		test 2 = $(git ls-files -u | wc -l) &&
+		test 2 = $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
-	test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
+		test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
+		test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
 
-	test $(git rev-parse L2:three) = $(git hash-object three~HEAD) &&
-	test $(git rev-parse R2:three) = $(git hash-object three~R2^0)
+		test $(git rev-parse L2:three) = $(git hash-object three~HEAD) &&
+		test $(git rev-parse R2:three) = $(git hash-object three~R2^0)
+	)
 '
 
 #
@@ -81,58 +90,61 @@ test_expect_success 'merge simple rename+criss-cross with no modifications' '
 #
 
 test_expect_success 'setup criss-cross + rename merges with basic modification' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	ten="0 1 2 3 4 5 6 7 8 9" &&
-	for i in $ten
-	do
-		echo line $i in a sample file
-	done >one &&
-	for i in $ten
-	do
-		echo line $i in another sample file
-	done >two &&
-	git add one two &&
-	test_tick && git commit -m initial &&
-
-	git branch L1 &&
-	git checkout -b R1 &&
-	git mv one three &&
-	echo more >>two &&
-	git add two &&
-	test_tick && git commit -m R1 &&
-
-	git checkout L1 &&
-	git mv two three &&
-	test_tick && git commit -m L1 &&
-
-	git checkout L1^0 &&
-	test_tick && git merge -s ours R1 &&
-	git tag L2 &&
-
-	git checkout R1^0 &&
-	test_tick && git merge -s ours L1 &&
-	git tag R2
+	test_create_repo rename-modify &&
+	(
+		cd rename-modify &&
+
+		ten="0 1 2 3 4 5 6 7 8 9" &&
+		for i in $ten
+		do
+			echo line $i in a sample file
+		done >one &&
+		for i in $ten
+		do
+			echo line $i in another sample file
+		done >two &&
+		git add one two &&
+		test_tick && git commit -m initial &&
+
+		git branch L1 &&
+		git checkout -b R1 &&
+		git mv one three &&
+		echo more >>two &&
+		git add two &&
+		test_tick && git commit -m R1 &&
+
+		git checkout L1 &&
+		git mv two three &&
+		test_tick && git commit -m L1 &&
+
+		git checkout L1^0 &&
+		test_tick && git merge -s ours R1 &&
+		git tag L2 &&
+
+		git checkout R1^0 &&
+		test_tick && git merge -s ours L1 &&
+		git tag R2
+	)
 '
 
 test_expect_success 'merge criss-cross + rename merges with basic modification' '
-	git reset --hard &&
-	git checkout L2^0 &&
+	(
+		cd rename-modify &&
+
+		git checkout L2^0 &&
 
-	test_must_fail git merge -s recursive R2^0 &&
+		test_must_fail git merge -s recursive R2^0 &&
 
-	test 2 = $(git ls-files -s | wc -l) &&
-	test 2 = $(git ls-files -u | wc -l) &&
-	test 2 = $(git ls-files -o | wc -l) &&
+		test 2 = $(git ls-files -s | wc -l) &&
+		test 2 = $(git ls-files -u | wc -l) &&
+		test 2 = $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
-	test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
+		test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
+		test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
 
-	test $(git rev-parse L2:three) = $(git hash-object three~HEAD) &&
-	test $(git rev-parse R2:three) = $(git hash-object three~R2^0)
+		test $(git rev-parse L2:three) = $(git hash-object three~HEAD) &&
+		test $(git rev-parse R2:three) = $(git hash-object three~R2^0)
+	)
 '
 
 #
@@ -156,64 +168,67 @@ test_expect_success 'merge criss-cross + rename merges with basic modification'
 #
 
 test_expect_success 'setup differently handled merges of rename/add conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n" >a &&
-	git add a &&
-	test_tick && git commit -m A &&
-
-	git branch B &&
-	git checkout -b C &&
-	echo 10 >>a &&
-	echo "other content" >>new_a &&
-	git add a new_a &&
-	test_tick && git commit -m C &&
-
-	git checkout B &&
-	git mv a new_a &&
-	test_tick && git commit -m B &&
-
-	git checkout B^0 &&
-	test_must_fail git merge C &&
-	git clean -f &&
-	test_tick && git commit -m D &&
-	git tag D &&
-
-	git checkout C^0 &&
-	test_must_fail git merge B &&
-	rm new_a~HEAD new_a &&
-	printf "Incorrectly merged content" >>new_a &&
-	git add -u &&
-	test_tick && git commit -m E &&
-	git tag E
+	test_create_repo rename-add &&
+	(
+		cd rename-add &&
+
+		printf "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n" >a &&
+		git add a &&
+		test_tick && git commit -m A &&
+
+		git branch B &&
+		git checkout -b C &&
+		echo 10 >>a &&
+		echo "other content" >>new_a &&
+		git add a new_a &&
+		test_tick && git commit -m C &&
+
+		git checkout B &&
+		git mv a new_a &&
+		test_tick && git commit -m B &&
+
+		git checkout B^0 &&
+		test_must_fail git merge C &&
+		git clean -f &&
+		test_tick && git commit -m D &&
+		git tag D &&
+
+		git checkout C^0 &&
+		test_must_fail git merge B &&
+		rm new_a~HEAD new_a &&
+		printf "Incorrectly merged content" >>new_a &&
+		git add -u &&
+		test_tick && git commit -m E &&
+		git tag E
+	)
 '
 
 test_expect_success 'git detects differently handled merges conflict' '
-	git reset --hard &&
-	git checkout D^0 &&
-
-	test_must_fail git merge -s recursive E^0 &&
-
-	test 3 = $(git ls-files -s | wc -l) &&
-	test 3 = $(git ls-files -u | wc -l) &&
-	test 0 = $(git ls-files -o | wc -l) &&
-
-	test $(git rev-parse :2:new_a) = $(git rev-parse D:new_a) &&
-	test $(git rev-parse :3:new_a) = $(git rev-parse E:new_a) &&
-
-	git cat-file -p B:new_a >>merged &&
-	git cat-file -p C:new_a >>merge-me &&
-	>empty &&
-	test_must_fail git merge-file \
-		-L "Temporary merge branch 2" \
-		-L "" \
-		-L "Temporary merge branch 1" \
-		merged empty merge-me &&
-	sed -e "s/^\([<=>]\)/\1\1\1/" merged >merged-internal &&
-	test $(git rev-parse :1:new_a) = $(git hash-object merged-internal)
+	(
+		cd rename-add &&
+
+		git checkout D^0 &&
+
+		test_must_fail git merge -s recursive E^0 &&
+
+		test 3 = $(git ls-files -s | wc -l) &&
+		test 3 = $(git ls-files -u | wc -l) &&
+		test 0 = $(git ls-files -o | wc -l) &&
+
+		test $(git rev-parse :2:new_a) = $(git rev-parse D:new_a) &&
+		test $(git rev-parse :3:new_a) = $(git rev-parse E:new_a) &&
+
+		git cat-file -p B:new_a >>merged &&
+		git cat-file -p C:new_a >>merge-me &&
+		>empty &&
+		test_must_fail git merge-file \
+			-L "Temporary merge branch 2" \
+			-L "" \
+			-L "Temporary merge branch 1" \
+			merged empty merge-me &&
+		sed -e "s/^\([<=>]\)/\1\1\1/" merged >merged-internal &&
+		test $(git rev-parse :1:new_a) = $(git hash-object merged-internal)
+	)
 '
 
 #
@@ -236,67 +251,75 @@ test_expect_success 'git detects differently handled merges conflict' '
 # Merging commits D & E should result in modify/delete conflict.
 
 test_expect_success 'setup criss-cross + modify/delete resolved differently' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	echo A >file &&
-	git add file &&
-	test_tick &&
-	git commit -m A &&
-
-	git branch B &&
-	git checkout -b C &&
-	git rm file &&
-	test_tick &&
-	git commit -m C &&
-
-	git checkout B &&
-	echo B >file &&
-	git add file &&
-	test_tick &&
-	git commit -m B &&
-
-	git checkout B^0 &&
-	test_must_fail git merge C &&
-	echo B >file &&
-	git add file &&
-	test_tick &&
-	git commit -m D &&
-	git tag D &&
-
-	git checkout C^0 &&
-	test_must_fail git merge B &&
-	git rm file &&
-	test_tick &&
-	git commit -m E &&
-	git tag E
+	test_create_repo modify-delete &&
+	(
+		cd modify-delete &&
+
+		echo A >file &&
+		git add file &&
+		test_tick &&
+		git commit -m A &&
+
+		git branch B &&
+		git checkout -b C &&
+		git rm file &&
+		test_tick &&
+		git commit -m C &&
+
+		git checkout B &&
+		echo B >file &&
+		git add file &&
+		test_tick &&
+		git commit -m B &&
+
+		git checkout B^0 &&
+		test_must_fail git merge C &&
+		echo B >file &&
+		git add file &&
+		test_tick &&
+		git commit -m D &&
+		git tag D &&
+
+		git checkout C^0 &&
+		test_must_fail git merge B &&
+		git rm file &&
+		test_tick &&
+		git commit -m E &&
+		git tag E
+	)
 '
 
 test_expect_success 'git detects conflict merging criss-cross+modify/delete' '
-	git checkout D^0 &&
+	(
+		cd modify-delete &&
+
+		git checkout D^0 &&
 
-	test_must_fail git merge -s recursive E^0 &&
+		test_must_fail git merge -s recursive E^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 2 -eq $(git ls-files -u | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 2 -eq $(git ls-files -u | wc -l) &&
 
-	test $(git rev-parse :1:file) = $(git rev-parse master:file) &&
-	test $(git rev-parse :2:file) = $(git rev-parse B:file)
+		test $(git rev-parse :1:file) = $(git rev-parse master:file) &&
+		test $(git rev-parse :2:file) = $(git rev-parse B:file)
+	)
 '
 
 test_expect_success 'git detects conflict merging criss-cross+modify/delete, reverse direction' '
-	git reset --hard &&
-	git checkout E^0 &&
+	(
+		cd modify-delete &&
+
+		git reset --hard &&
+		git checkout E^0 &&
 
-	test_must_fail git merge -s recursive D^0 &&
+		test_must_fail git merge -s recursive D^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 2 -eq $(git ls-files -u | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 2 -eq $(git ls-files -u | wc -l) &&
 
-	test $(git rev-parse :1:file) = $(git rev-parse master:file) &&
-	test $(git rev-parse :3:file) = $(git rev-parse B:file)
+		test $(git rev-parse :1:file) = $(git rev-parse master:file) &&
+		test $(git rev-parse :3:file) = $(git rev-parse B:file)
+	)
 '
 
 #
@@ -336,120 +359,136 @@ test_expect_success 'git detects conflict merging criss-cross+modify/delete, rev
 #
 
 test_expect_success 'setup differently handled merges of directory/file conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	>ignore-me &&
-	git add ignore-me &&
-	test_tick &&
-	git commit -m A &&
-	git tag A &&
-
-	git branch B &&
-	git checkout -b C &&
-	mkdir a &&
-	echo 10 >a/file &&
-	git add a/file &&
-	test_tick &&
-	git commit -m C &&
-
-	git checkout B &&
-	echo 5 >a &&
-	git add a &&
-	test_tick &&
-	git commit -m B &&
-
-	git checkout B^0 &&
-	test_must_fail git merge C &&
-	git clean -f &&
-	rm -rf a/ &&
-	echo 5 >a &&
-	git add a &&
-	test_tick &&
-	git commit -m D &&
-	git tag D &&
-
-	git checkout C^0 &&
-	test_must_fail git merge B &&
-	git clean -f &&
-	git rm --cached a &&
-	echo 10 >a/file &&
-	git add a/file &&
-	test_tick &&
-	git commit -m E1 &&
-	git tag E1 &&
-
-	git checkout C^0 &&
-	test_must_fail git merge B &&
-	git clean -f &&
-	git rm --cached a &&
-	printf "10\n11\n" >a/file &&
-	git add a/file &&
-	test_tick &&
-	git commit -m E2 &&
-	git tag E2
+	test_create_repo directory-file &&
+	(
+		cd directory-file &&
+
+		>ignore-me &&
+		git add ignore-me &&
+		test_tick &&
+		git commit -m A &&
+		git tag A &&
+
+		git branch B &&
+		git checkout -b C &&
+		mkdir a &&
+		echo 10 >a/file &&
+		git add a/file &&
+		test_tick &&
+		git commit -m C &&
+
+		git checkout B &&
+		echo 5 >a &&
+		git add a &&
+		test_tick &&
+		git commit -m B &&
+
+		git checkout B^0 &&
+		test_must_fail git merge C &&
+		git clean -f &&
+		rm -rf a/ &&
+		echo 5 >a &&
+		git add a &&
+		test_tick &&
+		git commit -m D &&
+		git tag D &&
+
+		git checkout C^0 &&
+		test_must_fail git merge B &&
+		git clean -f &&
+		git rm --cached a &&
+		echo 10 >a/file &&
+		git add a/file &&
+		test_tick &&
+		git commit -m E1 &&
+		git tag E1 &&
+
+		git checkout C^0 &&
+		test_must_fail git merge B &&
+		git clean -f &&
+		git rm --cached a &&
+		printf "10\n11\n" >a/file &&
+		git add a/file &&
+		test_tick &&
+		git commit -m E2 &&
+		git tag E2
+	)
 '
 
 test_expect_success 'merge of D & E1 fails but has appropriate contents' '
-	get_clean_checkout D^0 &&
+	(
+		cd directory-file &&
 
-	test_must_fail git merge -s recursive E1^0 &&
+		get_clean_checkout D^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 1 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test_must_fail git merge -s recursive E1^0 &&
 
-	test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
-	test $(git rev-parse :2:a) = $(git rev-parse B:a)
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 1 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
+
+		test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
+		test $(git rev-parse :2:a) = $(git rev-parse B:a)
+	)
 '
 
 test_expect_success 'merge of E1 & D fails but has appropriate contents' '
-	get_clean_checkout E1^0 &&
+	(
+		cd directory-file &&
+
+		get_clean_checkout E1^0 &&
 
-	test_must_fail git merge -s recursive D^0 &&
+		test_must_fail git merge -s recursive D^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 1 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 1 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
-	test $(git rev-parse :3:a) = $(git rev-parse B:a)
+		test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
+		test $(git rev-parse :3:a) = $(git rev-parse B:a)
+	)
 '
 
 test_expect_success 'merge of D & E2 fails but has appropriate contents' '
-	get_clean_checkout D^0 &&
+	(
+		cd directory-file &&
+
+		get_clean_checkout D^0 &&
 
-	test_must_fail git merge -s recursive E2^0 &&
+		test_must_fail git merge -s recursive E2^0 &&
 
-	test 4 -eq $(git ls-files -s | wc -l) &&
-	test 3 -eq $(git ls-files -u | wc -l) &&
-	test 1 -eq $(git ls-files -o | wc -l) &&
+		test 4 -eq $(git ls-files -s | wc -l) &&
+		test 3 -eq $(git ls-files -u | wc -l) &&
+		test 1 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse :2:a) = $(git rev-parse B:a) &&
-	test $(git rev-parse :3:a/file) = $(git rev-parse E2:a/file) &&
-	test $(git rev-parse :1:a/file) = $(git rev-parse C:a/file) &&
-	test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
+		test $(git rev-parse :2:a) = $(git rev-parse B:a) &&
+		test $(git rev-parse :3:a/file) = $(git rev-parse E2:a/file) &&
+		test $(git rev-parse :1:a/file) = $(git rev-parse C:a/file) &&
+		test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
 
-	test -f a~HEAD
+		test -f a~HEAD
+	)
 '
 
 test_expect_success 'merge of E2 & D fails but has appropriate contents' '
-	get_clean_checkout E2^0 &&
+	(
+		cd directory-file &&
 
-	test_must_fail git merge -s recursive D^0 &&
+		get_clean_checkout E2^0 &&
 
-	test 4 -eq $(git ls-files -s | wc -l) &&
-	test 3 -eq $(git ls-files -u | wc -l) &&
-	test 1 -eq $(git ls-files -o | wc -l) &&
+		test_must_fail git merge -s recursive D^0 &&
 
-	test $(git rev-parse :3:a) = $(git rev-parse B:a) &&
-	test $(git rev-parse :2:a/file) = $(git rev-parse E2:a/file) &&
-	test $(git rev-parse :1:a/file) = $(git rev-parse C:a/file) &&
-	test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
+		test 4 -eq $(git ls-files -s | wc -l) &&
+		test 3 -eq $(git ls-files -u | wc -l) &&
+		test 1 -eq $(git ls-files -o | wc -l) &&
 
-	test -f a~D^0
+		test $(git rev-parse :3:a) = $(git rev-parse B:a) &&
+		test $(git rev-parse :2:a/file) = $(git rev-parse E2:a/file) &&
+		test $(git rev-parse :1:a/file) = $(git rev-parse C:a/file) &&
+		test $(git rev-parse :0:ignore-me) = $(git rev-parse A:ignore-me) &&
+
+		test -f a~D^0
+	)
 '
 
 #
@@ -492,52 +531,55 @@ test_expect_success 'merge of E2 & D fails but has appropriate contents' '
 # but that may cancel out at the final merge stage".
 
 test_expect_success 'setup rename/rename(1to2)/modify followed by what looks like rename/rename(2to1)/modify' '
-	git reset --hard &&
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n6\n" >a &&
-	git add a &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	echo 7 >>b &&
-	git add -u &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a c &&
-	git commit -m C &&
-
-	git checkout -q B^0 &&
-	git merge --no-commit -s ours C^0 &&
-	git mv b newname &&
-	git commit -m "Merge commit C^0 into HEAD" &&
-	git tag D &&
-
-	git checkout -q C^0 &&
-	git merge --no-commit -s ours B^0 &&
-	git mv c newname &&
-	printf "7\n8\n" >>newname &&
-	git add -u &&
-	git commit -m "Merge commit B^0 into HEAD" &&
-	git tag E
+	test_create_repo rename-squared-squared &&
+	(
+		cd rename-squared-squared &&
+
+		printf "1\n2\n3\n4\n5\n6\n" >a &&
+		git add a &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		echo 7 >>b &&
+		git add -u &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a c &&
+		git commit -m C &&
+
+		git checkout -q B^0 &&
+		git merge --no-commit -s ours C^0 &&
+		git mv b newname &&
+		git commit -m "Merge commit C^0 into HEAD" &&
+		git tag D &&
+
+		git checkout -q C^0 &&
+		git merge --no-commit -s ours B^0 &&
+		git mv c newname &&
+		printf "7\n8\n" >>newname &&
+		git add -u &&
+		git commit -m "Merge commit B^0 into HEAD" &&
+		git tag E
+	)
 '
 
 test_expect_success 'handle rename/rename(1to2)/modify followed by what looks like rename/rename(2to1)/modify' '
-	git checkout D^0 &&
+	(
+		cd rename-squared-squared &&
 
-	git merge -s recursive E^0 &&
+		git checkout D^0 &&
 
-	test 1 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		git merge -s recursive E^0 &&
 
-	test $(git rev-parse HEAD:newname) = $(git rev-parse E:newname)
+		test 1 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
+
+		test $(git rev-parse HEAD:newname) = $(git rev-parse E:newname)
+	)
 '
 
 #
@@ -562,59 +604,63 @@ test_expect_success 'handle rename/rename(1to2)/modify followed by what looks li
 # renaming carefully (both in the virtual merge base and later), and getting
 # content merge handled.
 
-test_expect_success 'setup criss-cross + rename/rename/add + modify/modify' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "lots\nof\nwords\nand\ncontent\n" >a &&
-	git add a &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a c &&
-	printf "2\n3\n4\n5\n6\n7\n" >a &&
-	git add a &&
-	git commit -m C &&
-
-	git checkout B^0 &&
-	git merge --no-commit -s ours C^0 &&
-	git checkout C -- a c &&
-	mv a old_a &&
-	echo 1 >a &&
-	cat old_a >>a &&
-	rm old_a &&
-	git add -u &&
-	git commit -m "Merge commit C^0 into HEAD" &&
-	git tag D &&
-
-	git checkout C^0 &&
-	git merge --no-commit -s ours B^0 &&
-	git checkout B -- b &&
-	echo 8 >>a &&
-	git add -u &&
-	git commit -m "Merge commit B^0 into HEAD" &&
-	git tag E
+test_expect_success 'setup criss-cross + rename/rename/add-source + modify/modify' '
+	test_create_repo rename-rename-add-source &&
+	(
+		cd rename-rename-add-source &&
+
+		printf "lots\nof\nwords\nand\ncontent\n" >a &&
+		git add a &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a c &&
+		printf "2\n3\n4\n5\n6\n7\n" >a &&
+		git add a &&
+		git commit -m C &&
+
+		git checkout B^0 &&
+		git merge --no-commit -s ours C^0 &&
+		git checkout C -- a c &&
+		mv a old_a &&
+		echo 1 >a &&
+		cat old_a >>a &&
+		rm old_a &&
+		git add -u &&
+		git commit -m "Merge commit C^0 into HEAD" &&
+		git tag D &&
+
+		git checkout C^0 &&
+		git merge --no-commit -s ours B^0 &&
+		git checkout B -- b &&
+		echo 8 >>a &&
+		git add -u &&
+		git commit -m "Merge commit B^0 into HEAD" &&
+		git tag E
+	)
 '
 
 test_expect_failure 'detect rename/rename/add-source for virtual merge-base' '
-	git checkout D^0 &&
+	(
+		cd rename-rename-add-source &&
+
+		git checkout D^0 &&
 
-	git merge -s recursive E^0 &&
+		git merge -s recursive E^0 &&
 
-	test 3 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 3 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
-	test $(git rev-parse HEAD:c) = $(git rev-parse A:a) &&
-	test "$(cat a)" = "$(printf "1\n2\n3\n4\n5\n6\n7\n8\n")"
+		test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
+		test $(git rev-parse HEAD:c) = $(git rev-parse A:a) &&
+		test "$(cat a)" = "$(printf "1\n2\n3\n4\n5\n6\n7\n8\n")"
+	)
 '
 
 #
@@ -638,52 +684,56 @@ test_expect_failure 'detect rename/rename/add-source for virtual merge-base' '
 # base of B & C needs to not delete B:c for that to work, though...
 
 test_expect_success 'setup criss-cross+rename/rename/add-dest + simple modify' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	>a &&
-	git add a &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	printf "1\n2\n3\n4\n5\n6\n7\n" >c &&
-	git add c &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a c &&
-	git commit -m C &&
-
-	git checkout B^0 &&
-	git merge --no-commit -s ours C^0 &&
-	git mv b a &&
-	git commit -m "D is like B but renames b back to a" &&
-	git tag D &&
-
-	git checkout B^0 &&
-	git merge --no-commit -s ours C^0 &&
-	git mv b a &&
-	echo 8 >>c &&
-	git add c &&
-	git commit -m "E like D but has mod in c" &&
-	git tag E
+	test_create_repo rename-rename-add-dest &&
+	(
+		cd rename-rename-add-dest &&
+
+		>a &&
+		git add a &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		printf "1\n2\n3\n4\n5\n6\n7\n" >c &&
+		git add c &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a c &&
+		git commit -m C &&
+
+		git checkout B^0 &&
+		git merge --no-commit -s ours C^0 &&
+		git mv b a &&
+		git commit -m "D is like B but renames b back to a" &&
+		git tag D &&
+
+		git checkout B^0 &&
+		git merge --no-commit -s ours C^0 &&
+		git mv b a &&
+		echo 8 >>c &&
+		git add c &&
+		git commit -m "E like D but has mod in c" &&
+		git tag E
+	)
 '
 
 test_expect_success 'virtual merge base handles rename/rename(1to2)/add-dest' '
-	git checkout D^0 &&
+	(
+		cd rename-rename-add-dest &&
+
+		git checkout D^0 &&
 
-	git merge -s recursive E^0 &&
+		git merge -s recursive E^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse HEAD:a) = $(git rev-parse A:a) &&
-	test $(git rev-parse HEAD:c) = $(git rev-parse E:c)
+		test $(git rev-parse HEAD:a) = $(git rev-parse A:a) &&
+		test $(git rev-parse HEAD:c) = $(git rev-parse E:c)
+	)
 '
 
 test_done
diff --git a/t/t6042-merge-rename-corner-cases.sh b/t/t6042-merge-rename-corner-cases.sh
index 411550d2b6..bec0192c3b 100755
--- a/t/t6042-merge-rename-corner-cases.sh
+++ b/t/t6042-merge-rename-corner-cases.sh
@@ -6,31 +6,40 @@ test_description="recursive merge corner cases w/ renames but not criss-crosses"
 . ./test-lib.sh
 
 test_expect_success 'setup rename/delete + untracked file' '
-	echo "A pretty inscription" >ring &&
-	git add ring &&
-	test_tick &&
-	git commit -m beginning &&
-
-	git branch people &&
-	git checkout -b rename-the-ring &&
-	git mv ring one-ring-to-rule-them-all &&
-	test_tick &&
-	git commit -m fullname &&
-
-	git checkout people &&
-	git rm ring &&
-	echo gollum >owner &&
-	git add owner &&
-	test_tick &&
-	git commit -m track-people-instead-of-objects &&
-	echo "Myyy PRECIOUSSS" >ring
+	test_create_repo rename-delete-untracked &&
+	(
+		cd rename-delete-untracked &&
+
+		echo "A pretty inscription" >ring &&
+		git add ring &&
+		test_tick &&
+		git commit -m beginning &&
+
+		git branch people &&
+		git checkout -b rename-the-ring &&
+		git mv ring one-ring-to-rule-them-all &&
+		test_tick &&
+		git commit -m fullname &&
+
+		git checkout people &&
+		git rm ring &&
+		echo gollum >owner &&
+		git add owner &&
+		test_tick &&
+		git commit -m track-people-instead-of-objects &&
+		echo "Myyy PRECIOUSSS" >ring
+	)
 '
 
 test_expect_success "Does git preserve Gollum's precious artifact?" '
-	test_must_fail git merge -s recursive rename-the-ring &&
+	(
+		cd rename-delete-untracked &&
 
-	# Make sure git did not delete an untracked file
-	test -f ring
+		test_must_fail git merge -s recursive rename-the-ring &&
+
+		# Make sure git did not delete an untracked file
+		test -f ring
+	)
 '
 
 # Testcase setup for rename/modify/add-source:
@@ -41,96 +50,116 @@ test_expect_success "Does git preserve Gollum's precious artifact?" '
 # We should be able to merge B & C cleanly
 
 test_expect_success 'setup rename/modify/add-source conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
-	git add a &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	echo 8 >>a &&
-	git add a &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a b &&
-	echo something completely different >a &&
-	git add a &&
-	git commit -m C
+	test_create_repo rename-modify-add-source &&
+	(
+		cd rename-modify-add-source &&
+
+		printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
+		git add a &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		echo 8 >>a &&
+		git add a &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a b &&
+		echo something completely different >a &&
+		git add a &&
+		git commit -m C
+	)
 '
 
 test_expect_failure 'rename/modify/add-source conflict resolvable' '
-	git checkout B^0 &&
+	(
+		cd rename-modify-add-source &&
+
+		git checkout B^0 &&
 
-	git merge -s recursive C^0 &&
+		git merge -s recursive C^0 &&
 
-	test $(git rev-parse B:a) = $(git rev-parse b) &&
-	test $(git rev-parse C:a) = $(git rev-parse a)
+		test $(git rev-parse B:a) = $(git rev-parse b) &&
+		test $(git rev-parse C:a) = $(git rev-parse a)
+	)
 '
 
 test_expect_success 'setup resolvable conflict missed if rename missed' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n" >a &&
-	echo foo >b &&
-	git add a b &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a c &&
-	echo "Completely different content" >a &&
-	git add a &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	echo 6 >>a &&
-	git add a &&
-	git commit -m C
+	test_create_repo break-detection-1 &&
+	(
+		cd break-detection-1 &&
+
+		printf "1\n2\n3\n4\n5\n" >a &&
+		echo foo >b &&
+		git add a b &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a c &&
+		echo "Completely different content" >a &&
+		git add a &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		echo 6 >>a &&
+		git add a &&
+		git commit -m C
+	)
 '
 
 test_expect_failure 'conflict caused if rename not detected' '
-	git checkout -q C^0 &&
-	git merge -s recursive B^0 &&
+	(
+		cd break-detection-1 &&
+
+		git checkout -q C^0 &&
+		git merge -s recursive B^0 &&
 
-	test 3 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 3 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test_line_count = 6 c &&
-	test $(git rev-parse HEAD:a) = $(git rev-parse B:a) &&
-	test $(git rev-parse HEAD:b) = $(git rev-parse A:b)
+		test_line_count = 6 c &&
+		test $(git rev-parse HEAD:a) = $(git rev-parse B:a) &&
+		test $(git rev-parse HEAD:b) = $(git rev-parse A:b)
+	)
 '
 
 test_expect_success 'setup conflict resolved wrong if rename missed' '
-	git reset --hard &&
-	git clean -f &&
-
-	git checkout -b D A &&
-	echo 7 >>a &&
-	git add a &&
-	git mv a c &&
-	echo "Completely different content" >a &&
-	git add a &&
-	git commit -m D &&
-
-	git checkout -b E A &&
-	git rm a &&
-	echo "Completely different content" >>a &&
-	git add a &&
-	git commit -m E
+	test_create_repo break-detection-2 &&
+	(
+		cd break-detection-2 &&
+
+		printf "1\n2\n3\n4\n5\n" >a &&
+		echo foo >b &&
+		git add a b &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b D A &&
+		echo 7 >>a &&
+		git add a &&
+		git mv a c &&
+		echo "Completely different content" >a &&
+		git add a &&
+		git commit -m D &&
+
+		git checkout -b E A &&
+		git rm a &&
+		echo "Completely different content" >>a &&
+		git add a &&
+		git commit -m E
+	)
 '
 
 test_expect_failure 'missed conflict if rename not detected' '
-	git checkout -q E^0 &&
-	test_must_fail git merge -s recursive D^0
+	(
+		cd break-detection-2 &&
+
+		git checkout -q E^0 &&
+		test_must_fail git merge -s recursive D^0
+	)
 '
 
 # Tests for undetected rename/add-source causing a file to erroneously be
@@ -145,198 +174,210 @@ test_expect_failure 'missed conflict if rename not detected' '
 #   Commit C: rename a->b, add unrelated a
 
 test_expect_success 'setup undetected rename/add-source causes data loss' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n" >a &&
-	git add a &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a b &&
-	echo foobar >a &&
-	git add a &&
-	git commit -m C
+	test_create_repo break-detection-3 &&
+	(
+		cd break-detection-3 &&
+
+		printf "1\n2\n3\n4\n5\n" >a &&
+		git add a &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a b &&
+		echo foobar >a &&
+		git add a &&
+		git commit -m C
+	)
 '
 
 test_expect_failure 'detect rename/add-source and preserve all data' '
-	git checkout B^0 &&
+	(
+		cd break-detection-3 &&
+
+		git checkout B^0 &&
 
-	git merge -s recursive C^0 &&
+		git merge -s recursive C^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 2 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 2 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test -f a &&
-	test -f b &&
+		test -f a &&
+		test -f b &&
 
-	test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
-	test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
+		test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
+		test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
+	)
 '
 
 test_expect_failure 'detect rename/add-source and preserve all data, merge other way' '
-	git checkout C^0 &&
+	(
+		cd break-detection-3 &&
 
-	git merge -s recursive B^0 &&
+		git checkout C^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 2 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		git merge -s recursive B^0 &&
 
-	test -f a &&
-	test -f b &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 2 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
-	test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
+		test -f a &&
+		test -f b &&
+
+		test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
+		test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
+	)
 '
 
 test_expect_success 'setup content merge + rename/directory conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n6\n" >file &&
-	git add file &&
-	test_tick &&
-	git commit -m base &&
-	git tag base &&
-
-	git checkout -b right &&
-	echo 7 >>file &&
-	mkdir newfile &&
-	echo junk >newfile/realfile &&
-	git add file newfile/realfile &&
-	test_tick &&
-	git commit -m right &&
-
-	git checkout -b left-conflict base &&
-	echo 8 >>file &&
-	git add file &&
-	git mv file newfile &&
-	test_tick &&
-	git commit -m left &&
-
-	git checkout -b left-clean base &&
-	echo 0 >newfile &&
-	cat file >>newfile &&
-	git add newfile &&
-	git rm file &&
-	test_tick &&
-	git commit -m left
+	test_create_repo rename-directory-1 &&
+	(
+		cd rename-directory-1 &&
+
+		printf "1\n2\n3\n4\n5\n6\n" >file &&
+		git add file &&
+		test_tick &&
+		git commit -m base &&
+		git tag base &&
+
+		git checkout -b right &&
+		echo 7 >>file &&
+		mkdir newfile &&
+		echo junk >newfile/realfile &&
+		git add file newfile/realfile &&
+		test_tick &&
+		git commit -m right &&
+
+		git checkout -b left-conflict base &&
+		echo 8 >>file &&
+		git add file &&
+		git mv file newfile &&
+		test_tick &&
+		git commit -m left &&
+
+		git checkout -b left-clean base &&
+		echo 0 >newfile &&
+		cat file >>newfile &&
+		git add newfile &&
+		git rm file &&
+		test_tick &&
+		git commit -m left
+	)
 '
 
 test_expect_success 'rename/directory conflict + clean content merge' '
-	git reset --hard &&
-	git reset --hard &&
-	git clean -fdqx &&
+	(
+		cd rename-directory-1 &&
 
-	git checkout left-clean^0 &&
+		git checkout left-clean^0 &&
 
-	test_must_fail git merge -s recursive right^0 &&
+		test_must_fail git merge -s recursive right^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 1 -eq $(git ls-files -u | wc -l) &&
-	test 1 -eq $(git ls-files -o | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 1 -eq $(git ls-files -u | wc -l) &&
+		test 1 -eq $(git ls-files -o | wc -l) &&
 
-	echo 0 >expect &&
-	git cat-file -p base:file >>expect &&
-	echo 7 >>expect &&
-	test_cmp expect newfile~HEAD &&
+		echo 0 >expect &&
+		git cat-file -p base:file >>expect &&
+		echo 7 >>expect &&
+		test_cmp expect newfile~HEAD &&
 
-	test $(git rev-parse :2:newfile) = $(git hash-object expect) &&
+		test $(git rev-parse :2:newfile) = $(git hash-object expect) &&
 
-	test -f newfile/realfile &&
-	test -f newfile~HEAD
+		test -f newfile/realfile &&
+		test -f newfile~HEAD
+	)
 '
 
 test_expect_success 'rename/directory conflict + content merge conflict' '
-	git reset --hard &&
-	git reset --hard &&
-	git clean -fdqx &&
-
-	git checkout left-conflict^0 &&
-
-	test_must_fail git merge -s recursive right^0 &&
-
-	test 4 -eq $(git ls-files -s | wc -l) &&
-	test 3 -eq $(git ls-files -u | wc -l) &&
-	test 1 -eq $(git ls-files -o | wc -l) &&
-
-	git cat-file -p left-conflict:newfile >left &&
-	git cat-file -p base:file    >base &&
-	git cat-file -p right:file   >right &&
-	test_must_fail git merge-file \
-		-L "HEAD:newfile" \
-		-L "" \
-		-L "right^0:file" \
-		left base right &&
-	test_cmp left newfile~HEAD &&
-
-	test $(git rev-parse :1:newfile) = $(git rev-parse base:file) &&
-	test $(git rev-parse :2:newfile) = $(git rev-parse left-conflict:newfile) &&
-	test $(git rev-parse :3:newfile) = $(git rev-parse right:file) &&
-
-	test -f newfile/realfile &&
-	test -f newfile~HEAD
+	(
+		cd rename-directory-1 &&
+
+		git reset --hard &&
+		git reset --hard &&
+		git clean -fdqx &&
+
+		git checkout left-conflict^0 &&
+
+		test_must_fail git merge -s recursive right^0 &&
+
+		test 4 -eq $(git ls-files -s | wc -l) &&
+		test 3 -eq $(git ls-files -u | wc -l) &&
+		test 1 -eq $(git ls-files -o | wc -l) &&
+
+		git cat-file -p left-conflict:newfile >left &&
+		git cat-file -p base:file    >base &&
+		git cat-file -p right:file   >right &&
+		test_must_fail git merge-file \
+			-L "HEAD:newfile" \
+			-L "" \
+			-L "right^0:file" \
+			left base right &&
+		test_cmp left newfile~HEAD &&
+
+		test $(git rev-parse :1:newfile) = $(git rev-parse base:file) &&
+		test $(git rev-parse :2:newfile) = $(git rev-parse left-conflict:newfile) &&
+		test $(git rev-parse :3:newfile) = $(git rev-parse right:file) &&
+
+		test -f newfile/realfile &&
+		test -f newfile~HEAD
+	)
 '
 
 test_expect_success 'setup content merge + rename/directory conflict w/ disappearing dir' '
-	git reset --hard &&
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	mkdir sub &&
-	printf "1\n2\n3\n4\n5\n6\n" >sub/file &&
-	git add sub/file &&
-	test_tick &&
-	git commit -m base &&
-	git tag base &&
-
-	git checkout -b right &&
-	echo 7 >>sub/file &&
-	git add sub/file &&
-	test_tick &&
-	git commit -m right &&
-
-	git checkout -b left base &&
-	echo 0 >newfile &&
-	cat sub/file >>newfile &&
-	git rm sub/file &&
-	mv newfile sub &&
-	git add sub &&
-	test_tick &&
-	git commit -m left
+	test_create_repo rename-directory-2 &&
+	(
+		cd rename-directory-2 &&
+
+		mkdir sub &&
+		printf "1\n2\n3\n4\n5\n6\n" >sub/file &&
+		git add sub/file &&
+		test_tick &&
+		git commit -m base &&
+		git tag base &&
+
+		git checkout -b right &&
+		echo 7 >>sub/file &&
+		git add sub/file &&
+		test_tick &&
+		git commit -m right &&
+
+		git checkout -b left base &&
+		echo 0 >newfile &&
+		cat sub/file >>newfile &&
+		git rm sub/file &&
+		mv newfile sub &&
+		git add sub &&
+		test_tick &&
+		git commit -m left
+	)
 '
 
 test_expect_success 'disappearing dir in rename/directory conflict handled' '
-	git reset --hard &&
-	git clean -fdqx &&
+	(
+		cd rename-directory-2 &&
 
-	git checkout left^0 &&
+		git checkout left^0 &&
 
-	git merge -s recursive right^0 &&
+		git merge -s recursive right^0 &&
 
-	test 1 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 1 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	echo 0 >expect &&
-	git cat-file -p base:sub/file >>expect &&
-	echo 7 >>expect &&
-	test_cmp expect sub &&
+		echo 0 >expect &&
+		git cat-file -p base:sub/file >>expect &&
+		echo 7 >>expect &&
+		test_cmp expect sub &&
 
-	test -f sub
+		test -f sub
+	)
 '
 
 # Test for all kinds of things that can go wrong with rename/rename (2to1):
@@ -352,48 +393,52 @@ test_expect_success 'disappearing dir in rename/directory conflict handled' '
 #   * Nothing else should be present.  Is anything?
 
 test_expect_success 'setup rename/rename (2to1) + modify/modify' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n" >a &&
-	printf "5\n4\n3\n2\n1\n" >b &&
-	git add a b &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a c &&
-	echo 0 >>b &&
-	git add b &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv b c &&
-	echo 6 >>a &&
-	git add a &&
-	git commit -m C
+	test_create_repo rename-rename-2to1 &&
+	(
+		cd rename-rename-2to1 &&
+
+		printf "1\n2\n3\n4\n5\n" >a &&
+		printf "5\n4\n3\n2\n1\n" >b &&
+		git add a b &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a c &&
+		echo 0 >>b &&
+		git add b &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv b c &&
+		echo 6 >>a &&
+		git add a &&
+		git commit -m C
+	)
 '
 
 test_expect_success 'handle rename/rename (2to1) conflict correctly' '
-	git checkout B^0 &&
+	(
+		cd rename-rename-2to1 &&
+
+		git checkout B^0 &&
 
-	test_must_fail git merge -s recursive C^0 >out &&
-	test_i18ngrep "CONFLICT (rename/rename)" out &&
+		test_must_fail git merge -s recursive C^0 >out &&
+		test_i18ngrep "CONFLICT (rename/rename)" out &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 2 -eq $(git ls-files -u | wc -l) &&
-	test 2 -eq $(git ls-files -u c | wc -l) &&
-	test 3 -eq $(git ls-files -o | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 2 -eq $(git ls-files -u | wc -l) &&
+		test 2 -eq $(git ls-files -u c | wc -l) &&
+		test 3 -eq $(git ls-files -o | wc -l) &&
 
-	test ! -f a &&
-	test ! -f b &&
-	test -f c~HEAD &&
-	test -f c~C^0 &&
+		test ! -f a &&
+		test ! -f b &&
+		test -f c~HEAD &&
+		test -f c~C^0 &&
 
-	test $(git hash-object c~HEAD) = $(git rev-parse C:a) &&
-	test $(git hash-object c~C^0) = $(git rev-parse B:b)
+		test $(git hash-object c~HEAD) = $(git rev-parse C:a) &&
+		test $(git hash-object c~C^0) = $(git rev-parse B:b)
+	)
 '
 
 # Testcase setup for simple rename/rename (1to2) conflict:
@@ -401,44 +446,48 @@ test_expect_success 'handle rename/rename (2to1) conflict correctly' '
 #   Commit B: rename a->b
 #   Commit C: rename a->c
 test_expect_success 'setup simple rename/rename (1to2) conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	echo stuff >a &&
-	git add a &&
-	test_tick &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	test_tick &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a c &&
-	test_tick &&
-	git commit -m C
+	test_create_repo rename-rename-1to2 &&
+	(
+		cd rename-rename-1to2 &&
+
+		echo stuff >a &&
+		git add a &&
+		test_tick &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		test_tick &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a c &&
+		test_tick &&
+		git commit -m C
+	)
 '
 
 test_expect_success 'merge has correct working tree contents' '
-	git checkout C^0 &&
+	(
+		cd rename-rename-1to2 &&
+
+		git checkout C^0 &&
 
-	test_must_fail git merge -s recursive B^0 &&
+		test_must_fail git merge -s recursive B^0 &&
 
-	test 3 -eq $(git ls-files -s | wc -l) &&
-	test 3 -eq $(git ls-files -u | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 3 -eq $(git ls-files -s | wc -l) &&
+		test 3 -eq $(git ls-files -u | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse :1:a) = $(git rev-parse A:a) &&
-	test $(git rev-parse :3:b) = $(git rev-parse A:a) &&
-	test $(git rev-parse :2:c) = $(git rev-parse A:a) &&
+		test $(git rev-parse :1:a) = $(git rev-parse A:a) &&
+		test $(git rev-parse :3:b) = $(git rev-parse A:a) &&
+		test $(git rev-parse :2:c) = $(git rev-parse A:a) &&
 
-	test ! -f a &&
-	test $(git hash-object b) = $(git rev-parse A:a) &&
-	test $(git hash-object c) = $(git rev-parse A:a)
+		test ! -f a &&
+		test $(git hash-object b) = $(git rev-parse A:a) &&
+		test $(git hash-object c) = $(git rev-parse A:a)
+	)
 '
 
 # Testcase setup for rename/rename(1to2)/add-source conflict:
@@ -449,130 +498,142 @@ test_expect_success 'merge has correct working tree contents' '
 # Merging of B & C should NOT be clean; there's a rename/rename conflict
 
 test_expect_success 'setup rename/rename(1to2)/add-source conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
-	git add a &&
-	git commit -m A &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	git commit -m B &&
-
-	git checkout -b C A &&
-	git mv a c &&
-	echo something completely different >a &&
-	git add a &&
-	git commit -m C
+	test_create_repo rename-rename-1to2-add-source-1 &&
+	(
+		cd rename-rename-1to2-add-source-1 &&
+
+		printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
+		git add a &&
+		git commit -m A &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		git commit -m B &&
+
+		git checkout -b C A &&
+		git mv a c &&
+		echo something completely different >a &&
+		git add a &&
+		git commit -m C
+	)
 '
 
 test_expect_failure 'detect conflict with rename/rename(1to2)/add-source merge' '
-	git checkout B^0 &&
+	(
+		cd rename-rename-1to2-add-source-1 &&
 
-	test_must_fail git merge -s recursive C^0 &&
+		git checkout B^0 &&
 
-	test 4 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test_must_fail git merge -s recursive C^0 &&
 
-	test $(git rev-parse 3:a) = $(git rev-parse C:a) &&
-	test $(git rev-parse 1:a) = $(git rev-parse A:a) &&
-	test $(git rev-parse 2:b) = $(git rev-parse B:b) &&
-	test $(git rev-parse 3:c) = $(git rev-parse C:c) &&
+		test 4 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test -f a &&
-	test -f b &&
-	test -f c
+		test $(git rev-parse 3:a) = $(git rev-parse C:a) &&
+		test $(git rev-parse 1:a) = $(git rev-parse A:a) &&
+		test $(git rev-parse 2:b) = $(git rev-parse B:b) &&
+		test $(git rev-parse 3:c) = $(git rev-parse C:c) &&
+
+		test -f a &&
+		test -f b &&
+		test -f c
+	)
 '
 
 test_expect_success 'setup rename/rename(1to2)/add-source resolvable conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	>a &&
-	git add a &&
-	test_tick &&
-	git commit -m base &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	test_tick &&
-	git commit -m one &&
-
-	git checkout -b C A &&
-	git mv a b &&
-	echo important-info >a &&
-	git add a &&
-	test_tick &&
-	git commit -m two
+	test_create_repo rename-rename-1to2-add-source-2 &&
+	(
+		cd rename-rename-1to2-add-source-2 &&
+
+		>a &&
+		git add a &&
+		test_tick &&
+		git commit -m base &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		test_tick &&
+		git commit -m one &&
+
+		git checkout -b C A &&
+		git mv a b &&
+		echo important-info >a &&
+		git add a &&
+		test_tick &&
+		git commit -m two
+	)
 '
 
 test_expect_failure 'rename/rename/add-source still tracks new a file' '
-	git checkout C^0 &&
-	git merge -s recursive B^0 &&
+	(
+		cd rename-rename-1to2-add-source-2 &&
+
+		git checkout C^0 &&
+		git merge -s recursive B^0 &&
 
-	test 2 -eq $(git ls-files -s | wc -l) &&
-	test 0 -eq $(git ls-files -o | wc -l) &&
+		test 2 -eq $(git ls-files -s | wc -l) &&
+		test 0 -eq $(git ls-files -o | wc -l) &&
 
-	test $(git rev-parse HEAD:a) = $(git rev-parse C:a) &&
-	test $(git rev-parse HEAD:b) = $(git rev-parse A:a)
+		test $(git rev-parse HEAD:a) = $(git rev-parse C:a) &&
+		test $(git rev-parse HEAD:b) = $(git rev-parse A:a)
+	)
 '
 
 test_expect_success 'setup rename/rename(1to2)/add-dest conflict' '
-	git rm -rf . &&
-	git clean -fdqx &&
-	rm -rf .git &&
-	git init &&
-
-	echo stuff >a &&
-	git add a &&
-	test_tick &&
-	git commit -m base &&
-	git tag A &&
-
-	git checkout -b B A &&
-	git mv a b &&
-	echo precious-data >c &&
-	git add c &&
-	test_tick &&
-	git commit -m one &&
-
-	git checkout -b C A &&
-	git mv a c &&
-	echo important-info >b &&
-	git add b &&
-	test_tick &&
-	git commit -m two
+	test_create_repo rename-rename-1to2-add-dest &&
+	(
+		cd rename-rename-1to2-add-dest &&
+
+		echo stuff >a &&
+		git add a &&
+		test_tick &&
+		git commit -m base &&
+		git tag A &&
+
+		git checkout -b B A &&
+		git mv a b &&
+		echo precious-data >c &&
+		git add c &&
+		test_tick &&
+		git commit -m one &&
+
+		git checkout -b C A &&
+		git mv a c &&
+		echo important-info >b &&
+		git add b &&
+		test_tick &&
+		git commit -m two
+	)
 '
 
 test_expect_success 'rename/rename/add-dest merge still knows about conflicting file versions' '
-	git checkout C^0 &&
-	test_must_fail git merge -s recursive B^0 &&
-
-	test 5 -eq $(git ls-files -s | wc -l) &&
-	test 2 -eq $(git ls-files -u b | wc -l) &&
-	test 2 -eq $(git ls-files -u c | wc -l) &&
-	test 4 -eq $(git ls-files -o | wc -l) &&
-
-	test $(git rev-parse :1:a) = $(git rev-parse A:a) &&
-	test $(git rev-parse :2:b) = $(git rev-parse C:b) &&
-	test $(git rev-parse :3:b) = $(git rev-parse B:b) &&
-	test $(git rev-parse :2:c) = $(git rev-parse C:c) &&
-	test $(git rev-parse :3:c) = $(git rev-parse B:c) &&
-
-	test $(git hash-object c~HEAD) = $(git rev-parse C:c) &&
-	test $(git hash-object c~B\^0) = $(git rev-parse B:c) &&
-	test $(git hash-object b~HEAD) = $(git rev-parse C:b) &&
-	test $(git hash-object b~B\^0) = $(git rev-parse B:b) &&
-
-	test ! -f b &&
-	test ! -f c
+	(
+		cd rename-rename-1to2-add-dest &&
+
+		git checkout C^0 &&
+		test_must_fail git merge -s recursive B^0 &&
+
+		test 5 -eq $(git ls-files -s | wc -l) &&
+		test 2 -eq $(git ls-files -u b | wc -l) &&
+		test 2 -eq $(git ls-files -u c | wc -l) &&
+		test 4 -eq $(git ls-files -o | wc -l) &&
+
+		test $(git rev-parse :1:a) = $(git rev-parse A:a) &&
+		test $(git rev-parse :2:b) = $(git rev-parse C:b) &&
+		test $(git rev-parse :3:b) = $(git rev-parse B:b) &&
+		test $(git rev-parse :2:c) = $(git rev-parse C:c) &&
+		test $(git rev-parse :3:c) = $(git rev-parse B:c) &&
+
+		test $(git hash-object c~HEAD) = $(git rev-parse C:c) &&
+		test $(git hash-object c~B\^0) = $(git rev-parse B:c) &&
+		test $(git hash-object b~HEAD) = $(git rev-parse C:b) &&
+		test $(git hash-object b~B\^0) = $(git rev-parse B:b) &&
+
+		test ! -f b &&
+		test ! -f c
+	)
 '
 
 test_done
-- 
2.17.0.1.gda85003413





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