[PATCH 6/7] contrib/subtree: Make each test self-contained

[David Greene <greened@obbligato.org>]

From: Techlive Zheng <techlivezheng@gmail.com>

Each test runs a full repository creation and any subtree actions
needed to perform the test.  Each test starts with a clean slate,
making debugging and post-mortem analysis much easier.

Signed-off-by: Techlive Zheng <techlivezheng@gmail.com>
Signed-off-by: David A. Greene <greened@obbligato.org>
---
 contrib/subtree/t/t7900-subtree.sh | 1258 ++++++++++++++++++++++++------------
 1 file changed, 840 insertions(+), 418 deletions(-)

diff --git a/contrib/subtree/t/t7900-subtree.sh b/contrib/subtree/t/t7900-subtree.sh
index 6250194..2683d7d 100755
--- a/contrib/subtree/t/t7900-subtree.sh
+++ b/contrib/subtree/t/t7900-subtree.sh
@@ -14,6 +14,15 @@ export TEST_DIRECTORY
 
 . ../../../t/test-lib.sh
 
+subtree_test_create_repo()
+{
+	test_create_repo "$1"
+	(
+		cd $1
+		git config log.date relative
+	)
+}
+
 create()
 {
 	echo "$1" >"$1"
@@ -61,515 +70,928 @@ join_commits()
 	echo "$commit $all"
 }
 
+test_create_commit() (
+	repo=$1
+	commit=$2
+	cd "$repo"
+	mkdir -p $(dirname "$commit") \
+	|| error "Could not create directory for commit"
+	echo "$commit" >"$commit"
+	git add "$commit" || error "Could not add commit"
+	git commit -m "$commit" || error "Could not commit"
+)
+
 last_commit_message()
 {
 	git log --pretty=format:%s -1
 }
 
-test_expect_success 'init subproj' '
-	test_create_repo "sub proj"
-'
-
-# To the subproject!
-cd ./"sub proj"
-
-test_expect_success 'add sub1' '
-	create sub1 &&
-	git commit -m "sub1" &&
-	git branch sub1 &&
-	git branch -m master subproj
-'
-
-# Save this hash for testing later.
-
-subdir_hash=$(git rev-parse HEAD)
-
-test_expect_success 'add sub2' '
-	create sub2 &&
-	git commit -m "sub2" &&
-	git branch sub2
-'
-
-test_expect_success 'add sub3' '
-	create sub3 &&
-	git commit -m "sub3" &&
-	git branch sub3
-'
-
-# Back to mainline
-cd ..
-
-test_expect_success 'enable log.date=relative to catch errors' '
-	git config log.date relative
-'
-
-test_expect_success 'add main4' '
-	create main4 &&
-	git commit -m "main4" &&
-	git branch -m master mainline &&
-	git branch subdir
-'
-
-test_expect_success 'fetch subproj history' '
-	git fetch ./"sub proj" sub1 &&
-	git branch sub1 FETCH_HEAD
-'
-
-test_expect_success 'no subtree exists in main tree' '
-	test_must_fail git subtree merge --prefix="sub dir" sub1
-'
+subtree_test_count=0
+next_test() {
+	subtree_test_count=$(($subtree_test_count+1))
+}
 
-test_expect_success 'no pull from non-existant subtree' '
-	test_must_fail git subtree pull --prefix="sub dir" ./"sub proj" sub1
-'
+#
+# Tests for 'git subtree add'
+#
 
+next_test
 test_expect_success 'no merge from non-existent subtree' '
-	test_must_fail git subtree merge --prefix="sub dir" FETCH_HEAD
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		test_must_fail git subtree merge --prefix="sub dir" FETCH_HEAD
+	)
 '
 
-test_expect_success 'add subproj as subtree into sub dir/ with --prefix' '
-	git subtree add --prefix="sub dir" sub1 &&
-	check_equal "$(last_commit_message)" "Add '\''sub dir/'\'' from commit '\''$(git rev-parse sub1)'\''" &&
-	undo
-'
+next_test
+test_expect_success 'no pull from non-existent subtree' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		test_must_fail git subtree pull --prefix="sub dir" ./"sub proj" master
+	)'
 
-test_expect_success 'check if --message works for add' '
-	git subtree add --prefix="sub dir" --message="Added subproject" sub1 &&
-	check_equal ''"$(last_commit_message)"'' "Added subproject" &&
-	undo
+next_test
+test_expect_success 'add subproj as subtree into sub dir/ with --prefix' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Add '\''sub dir/'\'' from commit '\''$(git rev-parse FETCH_HEAD)'\''"
+	)
 '
 
+next_test
 test_expect_success 'add subproj as subtree into sub dir/ with --prefix and --message' '
-	git subtree add --prefix="sub dir" --message="Added subproject" sub1 &&
-	check_equal "$(last_commit_message)" "Added subproject" &&
-	undo
-'
-
-test_expect_success 'check if --message works as -m and --prefix as -P' '
-	git subtree add -P "sub dir" -m "Added subproject using git subtree" sub1 &&
-	check_equal ''"$(last_commit_message)"'' "Added subproject using git subtree" &&
-	undo
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" --message="Added subproject" FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Added subproject"
+	)
 '
 
-test_expect_success 'check if --message works with squash too' '
-	git subtree add -P "sub dir" -m "Added subproject with squash" --squash sub1 &&
-	check_equal ''"$(last_commit_message)"'' "Added subproject with squash" &&
-	undo
+next_test
+test_expect_success 'add subproj as subtree into sub dir/ with --prefix as -P and --message as -m' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add -P "sub dir" -m "Added subproject" FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Added subproject"
+	)
 '
 
+next_test
 test_expect_success 'add subproj as subtree into sub dir/ with --squash and --prefix and --message' '
-	git subtree add --prefix="sub dir" --message="Added subproject with squash" --squash sub1 &&
-	check_equal "$(last_commit_message)" "Added subproject with squash" &&
-	undo
-'
-
-# Maybe delete
-test_expect_success 'add subproj to mainline' '
-	git subtree add --prefix="sub dir"/ FETCH_HEAD &&
-	check_equal ''"$(last_commit_message)"'' "Add '"'sub dir/'"' from commit '"'"'''"$(git rev-parse sub1)"'''"'"'"
-'
-
-test_expect_success 'merge the added subproj again, should do nothing' '
-	# this shouldn not actually do anything, since FETCH_HEAD
-	# is already a parent
-	result=$(git merge -s ours -m "merge -s -ours" FETCH_HEAD) &&
-	check_equal "${result}" "Already up-to-date."
-'
-
-test_expect_success 'add main-sub5' '
-	create "sub dir/main-sub5" &&
-	git commit -m "main-sub5"
-'
-
-test_expect_success 'add main6' '
-	create main6 &&
-	git commit -m "main6 boring"
-'
-
-test_expect_success 'add main-sub7' '
-	create "sub dir/main-sub7" &&
-	git commit -m "main-sub7"
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" --message="Added subproject with squash" --squash FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Added subproject with squash"
+	)
 '
 
-test_expect_success 'fetch new subproj history' '
-	git fetch ./"sub proj" sub2 &&
-	git branch sub2 FETCH_HEAD
-'
+#
+# Tests for 'git subtree merge'
+#
 
-test_expect_success 'check if --message works for merge' '
-	git subtree merge --prefix="sub dir" -m "Merged changes from subproject" sub2 &&
-	check_equal ''"$(last_commit_message)"'' "Merged changes from subproject" &&
-	undo
+next_test
+test_expect_success 'merge new subproj history into sub dir/ with --prefix' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Merge commit '\''$(git rev-parse FETCH_HEAD)'\''"
+	)
 '
 
-test_expect_success 'check if --message for merge works with squash too' '
-	git subtree merge --prefix "sub dir" -m "Merged changes from subproject using squash" --squash sub2 &&
-	check_equal ''"$(last_commit_message)"'' "Merged changes from subproject using squash" &&
-	undo
+next_test
+test_expect_success 'merge new subproj history into sub dir/ with --prefix and --message' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" --message="Merged changes from subproject" FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Merged changes from subproject"
+	)
 '
 
-test_expect_success 'merge new subproj history into subdir' '
-	git subtree merge --prefix="sub dir" FETCH_HEAD &&
-	check_equal ''"$(last_commit_message)"'' "Merge commit '"'"'"$(git rev-parse sub2)"'"'"' into mainline" &&
-	undo
+next_test
+test_expect_success 'merge new subproj history into sub dir/ with --squash and --prefix and --message' '
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	subtree_test_create_repo "$subtree_test_count" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" --message="Merged changes from subproject using squash" --squash FETCH_HEAD &&
+		check_equal "$(last_commit_message)" "Merged changes from subproject using squash"
+	)
 '
 
-test_expect_success 'merge new subproj history into subdir/ with --prefix and --message' '
-	git subtree merge --prefix="sub dir" --message="Merged changes from subproject" FETCH_HEAD &&
-	check_equal "$(last_commit_message)" "Merged changes from subproject" &&
-	undo
+next_test
+test_expect_success 'merge the added subproj again, should do nothing' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD &&
+		# this shouldn not actually do anything, since FETCH_HEAD
+		# is already a parent
+		result=$(git merge -s ours -m "merge -s -ours" FETCH_HEAD) &&
+		check_equal "${result}" "Already up-to-date."
+	)
 '
 
-test_expect_success 'merge new subproj history into subdir/ with --squash and --prefix and --message' '
-	git subtree merge --prefix="sub dir" --message="Merged changes from subproject using squash" --squash FETCH_HEAD &&
-	check_equal "$(last_commit_message)" "Merged changes from subproject using squash" &&
-	undo
-'
+#
+# Tests for 'git subtree split'
+#
 
+next_test
 test_expect_success 'split requires option --prefix' '
-	echo "You must provide the --prefix option." > expected &&
-	test_must_fail git subtree split > actual 2>&1 &&
-	test_debug "printf '"'"'expected: '"'"'" &&
-	test_debug "cat expected" &&
-	test_debug "printf '"'"'actual: '"'"'" &&
-	test_debug "cat actual" &&
-	test_cmp expected actual &&
-	rm -f expected actual
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD &&
+		echo "You must provide the --prefix option." > expected &&
+		test_must_fail git subtree split > actual 2>&1 &&
+		test_debug "printf '"expected: "'" &&
+		test_debug "cat expected" &&
+		test_debug "printf '"actual: "'" &&
+		test_debug "cat actual" &&
+		test_cmp expected actual
+	)
 '
 
+next_test
 test_expect_success 'split requires path given by option --prefix must exist' '
-	echo "'\''non-existent-directory'\'' does not exist; use '\''git subtree add'\''" > expected &&
-	test_must_fail git subtree split --prefix=non-existent-directory > actual 2>&1 &&
-	test_debug "printf '"'"'expected: '"'"'" &&
-	test_debug "cat expected" &&
-	test_debug "printf '"'"'actual: '"'"'" &&
-	test_debug "cat actual" &&
-	test_cmp expected actual &&
-	rm -f expected actual
-'
-
-test_expect_success 'check if --message works for split+rejoin' '
-	spl1=''"$(git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --message "Split & rejoin" --rejoin)"'' &&
-	check_equal ''"$(last_commit_message)"'' "Split & rejoin" &&
-	undo
-'
-
-test_expect_success 'check split with --branch' '
-	spl1=$(git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --message "Split & rejoin" --rejoin) &&
-	undo &&
-	git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --branch splitbr1 &&
-	check_equal ''"$(git rev-parse splitbr1)"'' "$spl1"
-'
-
-test_expect_success 'check hash of split' '
-	spl1=$(git subtree split --prefix "sub dir") &&
-	git subtree split --prefix "sub dir" --branch splitbr1test &&
-	check_equal ''"$(git rev-parse splitbr1test)"'' "$spl1" &&
-	new_hash=$(git rev-parse splitbr1test~2) &&
-	check_equal ''"$new_hash"'' "$subdir_hash"
-'
-
-test_expect_success 'check split with --branch for an existing branch' '
-	spl1=''"$(git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --message "Split & rejoin" --rejoin)"'' &&
-	undo &&
-	git branch splitbr2 sub1 &&
-	git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --branch splitbr2 &&
-	check_equal ''"$(git rev-parse splitbr2)"'' "$spl1"
-'
-
-test_expect_success 'check split with --branch for an incompatible branch' '
-	test_must_fail git subtree split --prefix "sub dir" --onto FETCH_HEAD --branch subdir
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD &&
+		echo "'\''non-existent-directory'\'' does not exist; use '\''git subtree add'\''" > expected &&
+		test_must_fail git subtree split --prefix=non-existent-directory > actual 2>&1 &&
+		test_debug "printf '"expected: "'" &&
+		test_debug "cat expected" &&
+		test_debug "printf '"actual: "'" &&
+		test_debug "cat actual" &&
+		test_cmp expected actual
+	)
 '
 
+next_test
 test_expect_success 'split sub dir/ with --rejoin' '
-	spl1=$(git subtree split --prefix="sub dir" --annotate="*") &&
-	git branch spl1 "$spl1" &&
-	git subtree split --prefix="sub dir" --annotate="*" --rejoin &&
-	check_equal "$(last_commit_message)" "Split '\''sub dir/'\'' into commit '\''$spl1'\''" &&
-	undo
-'
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		split_hash=$(git subtree split --prefix="sub dir" --annotate="*") &&
+		git subtree split --prefix="sub dir" --annotate="*" --rejoin &&
+		check_equal "$(last_commit_message)" "Split '\''sub dir/'\'' into commit '\''$split_hash'\''"
+	)
+ '
 
+next_test
 test_expect_success 'split sub dir/ with --rejoin and --message' '
-	git subtree split --prefix="sub dir" --message="Split & rejoin" --annotate="*" --rejoin &&
-	check_equal "$(last_commit_message)" "Split & rejoin" &&
-	undo
-'
-
-test_expect_success 'check split+rejoin+onto' '
-	spl1=''"$(git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --message "Split & rejoin" --rejoin)"'' &&
-	undo &&
-	git subtree split --annotate='"'*'"' --prefix "sub dir" --onto FETCH_HEAD --rejoin &&
-	check_equal ''"$(last_commit_message)"'' "Split '"'"'sub dir/'"'"' into commit '"'"'"$spl1"'"'"'"
-'
-
-test_expect_success 'add main-sub8' '
-	create "sub dir/main-sub8" &&
-	git commit -m "main-sub8"
-'
-
-# To the subproject!
-cd ./"sub proj"
-
-test_expect_success 'merge split into subproj' '
-	git fetch .. spl1 &&
-	git branch spl1 FETCH_HEAD &&
-	git merge FETCH_HEAD
-'
-
-test_expect_success 'add sub9' '
-	create sub9 &&
-	git commit -m "sub9"
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --message="Split & rejoin" --annotate="*" --rejoin &&
+		check_equal "$(last_commit_message)" "Split & rejoin"
+	)
 '
 
-# Back to mainline
-cd ..
-
-test_expect_success 'split for sub8' '
-	split2=''"$(git subtree split --annotate='"'*'"' --prefix "sub dir/" --rejoin)"'' &&
-	git branch split2 "$split2"
+next_test
+test_expect_success 'split "sub dir"/ with --branch' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		split_hash=$(git subtree split --prefix="sub dir" --annotate="*") &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br &&
+		check_equal "$(git rev-parse subproj-br)" "$split_hash"
+	)
 '
 
-test_expect_success 'add main-sub10' '
-	create "sub dir/main-sub10" &&
-	git commit -m "main-sub10"
+next_test
+test_expect_success 'check hash of split' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		split_hash=$(git subtree split --prefix="sub dir" --annotate="*") &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br &&
+		check_equal "$(git rev-parse subproj-br)" "$split_hash" &&
+		# Check hash of split
+		new_hash=$(git rev-parse subproj-br^2) &&
+		(
+			cd ./"sub proj" &&
+			subdir_hash=$(git rev-parse HEAD) &&
+			check_equal ''"$new_hash"'' "$subdir_hash"
+		)
+	)
 '
 
-test_expect_success 'split for sub10' '
-	spl3=''"$(git subtree split --annotate='"'*'"' --prefix "sub dir" --rejoin)"'' &&
-	git branch spl3 "$spl3"
+next_test
+test_expect_success 'split "sub dir"/ with --branch for an existing branch' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git branch subproj-br FETCH_HEAD &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		split_hash=$(git subtree split --prefix="sub dir" --annotate="*") &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br &&
+		check_equal "$(git rev-parse subproj-br)" "$split_hash"
+	)
 '
 
-# To the subproject!
-cd ./"sub proj"
-
-test_expect_success 'merge split into subproj' '
-	git fetch .. spl3 &&
-	git branch spl3 FETCH_HEAD &&
-	git merge FETCH_HEAD &&
-	git branch subproj-merge-spl3
+next_test
+test_expect_success 'split "sub dir"/ with --branch for an incompatible branch' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git branch init HEAD &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		test_must_fail git subtree split --prefix="sub dir" --branch init
+	)
 '
 
-chkm="main4
-main6"
-
-chkms="main-sub10
-main-sub5
-main-sub7
-main-sub8"
-
-chkms_sub=$(cat <<TXT | sed 's,^,sub dir/,'
-$chkms
-TXT
-)
+#
+# Validity checking
+#
 
-chks="sub1
+next_test
+test_expect_success 'make sure exactly the right set of files ends up in the subproj' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub3 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD &&
+
+		chks="sub1
 sub2
 sub3
-sub9"
-
-chks_sub=$(cat <<TXT | sed 's,^,sub dir/,'
+sub4" &&
+		chks_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
 $chks
 TXT
-)
+) &&
+		chkms="main-sub1
+main-sub2
+main-sub3
+main-sub4" &&
+		chkms_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chkms
+TXT
+) &&
 
-test_expect_success 'make sure exactly the right set of files ends up in the subproj' '
-	subfiles="$(git ls-files)" &&
-	check_equal "$subfiles" "$chkms
+		subfiles=$(git ls-files) &&
+		check_equal "$subfiles" "$chkms
 $chks"
+	)
 '
 
-test_expect_success 'make sure the subproj history *only* contains commits that affect the subdir' '
-	allchanges=''"$(git log --name-only --pretty=format:'"''"' | sort | sed "/^$/d")"'' &&
-	check_equal "$allchanges" "$chkms
+next_test
+test_expect_success 'make sure the subproj *only* contains commits that affect the "sub dir"' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub3 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD &&
+
+		chks="sub1
+sub2
+sub3
+sub4" &&
+		chks_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chks
+TXT
+) &&
+		chkms="main-sub1
+main-sub2
+main-sub3
+main-sub4" &&
+		chkms_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chkms
+TXT
+) &&
+		allchanges=$(git log --name-only --pretty=format:"" | sort | sed "/^$/d") &&
+		check_equal "$allchanges" "$chkms
 $chks"
+	)
 '
 
-# Back to mainline
-cd ..
-
-test_expect_success 'pull from subproj' '
-	git fetch ./"sub proj" subproj-merge-spl3 &&
-	git branch subproj-merge-spl3 FETCH_HEAD &&
-	git subtree pull --prefix="sub dir" ./"sub proj" subproj-merge-spl3
-'
-
+next_test
 test_expect_success 'make sure exactly the right set of files ends up in the mainline' '
-	mainfiles=$(git ls-files) &&
-	check_equal "$mainfiles" "$chkm
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub3 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree pull --prefix="sub dir" ./"sub proj" master &&
+
+		chkm="main1
+main2" &&
+		chks="sub1
+sub2
+sub3
+sub4" &&
+		chks_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chks
+TXT
+) &&
+		chkms="main-sub1
+main-sub2
+main-sub3
+main-sub4" &&
+		chkms_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chkms
+TXT
+) &&
+		mainfiles=$(git ls-files) &&
+		check_equal "$mainfiles" "$chkm
 $chkms_sub
 $chks_sub"
+)
 '
 
+next_test
 test_expect_success 'make sure each filename changed exactly once in the entire history' '
-	# main-sub?? and sub dir/main-sub?? both change, because those are the
-	# changes that were split into their own history.  And sub dir/sub?? never
-	# change, since they were *only* changed in the subtree branch.
-	allchanges=''"$(git log --name-only --pretty=format:'"''"' | sort | sed "/^$/d")"'' &&
-	expected=''"$(cat <<TXT | sort
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git config log.date relative
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub3 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree pull --prefix="sub dir" ./"sub proj" master &&
+
+		chkm="main1
+main2" &&
+		chks="sub1
+sub2
+sub3
+sub4" &&
+		chks_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chks
+TXT
+) &&
+		chkms="main-sub1
+main-sub2
+main-sub3
+main-sub4" &&
+		chkms_sub=$(cat <<TXT | sed '\''s,^,sub dir/,'\''
+$chkms
+TXT
+) &&
+
+		# main-sub?? and /"sub dir"/main-sub?? both change, because those are the
+		# changes that were split into their own history.  And "sub dir"/sub?? never
+		# change, since they were *only* changed in the subtree branch.
+		allchanges=$(git log --name-only --pretty=format:"" | sort | sed "/^$/d") &&
+		expected=''"$(cat <<TXT | sort
 $chkms
 $chkm
 $chks
 $chkms_sub
 TXT
 )"'' &&
-	check_equal "$allchanges" "$expected"
+		check_equal "$allchanges" "$expected"
+	)
 '
 
+next_test
 test_expect_success 'make sure the --rejoin commits never make it into subproj' '
-	check_equal "$(git log --pretty=format:"%s" HEAD^2 | grep -i split)" ""
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub3 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree pull --prefix="sub dir" ./"sub proj" master &&
+		check_equal "$(git log --pretty=format:"%s" HEAD^2 | grep -i split)" ""
+	)
 '
 
+next_test
 test_expect_success 'make sure no "git subtree" tagged commits make it into subproj' '
-	# They are meaningless to subproj since one side of the merge refers to the mainline
-	check_equal "$(git log --pretty=format:"%s%n%b" HEAD^2 | grep "git-subtree.*:")" ""
-'
-
-# prepare second pair of repositories
-mkdir test2
-cd test2
-
-test_expect_success 'init main' '
-	test_create_repo main
-'
-
-cd main
-
-test_expect_success 'add main1' '
-	create main1 &&
-	git commit -m "main1"
-'
-
-cd ..
-
-test_expect_success 'init sub' '
-	test_create_repo sub
-'
-
-cd sub
-
-test_expect_success 'add sub2' '
-	create sub2 &&
-	git commit -m "sub2"
-'
-
-cd ../main
-
-# check if split can find proper base without --onto
-
-test_expect_success 'add sub as subdir in main' '
-	git fetch ../sub master &&
-	git branch sub2 FETCH_HEAD &&
-	git subtree add --prefix "sub dir" sub2
-'
-
-cd ../sub
-
-test_expect_success 'add sub3' '
-	create sub3 &&
-	git commit -m "sub3"
-'
-
-cd ../main
-
-test_expect_success 'merge from sub' '
-	git fetch ../sub master &&
-	git branch sub3 FETCH_HEAD &&
-	git subtree merge --prefix "sub dir" sub3
-'
-
-test_expect_success 'add main-sub4' '
-	create "sub dir/main-sub4" &&
-	git commit -m "main-sub4"
-'
-
-test_expect_success 'split for main-sub4 without --onto' '
-	git subtree split --prefix "sub dir" --branch mainsub4
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub3 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		 git merge FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub4 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --annotate="*" --branch subproj-br --rejoin
+	) &&
+	(
+		cd "$subtree_test_count/sub proj" &&
+		git fetch .. subproj-br &&
+		git merge FETCH_HEAD
+	) &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree pull --prefix="sub dir" ./"sub proj" master &&
+
+		# They are meaningless to subproj since one side of the merge refers to the mainline
+		check_equal "$(git log --pretty=format:"%s%n%b" HEAD^2 | grep "git-subtree.*:")" ""
+	)
 '
 
-# At this point, the new commit parent should be sub3.  If it is not,
-# something went wrong (the "newparent" of "master~" commit should
-# have been sub3, but it was not, because its cache was not set to
-# itself).
-
-test_expect_success 'check that the commit parent is sub3' '
-	check_equal "$(git log --pretty=format:%P -1 mainsub4)" "$(git rev-parse sub3)"
-'
+#
+# A new set of tests
+#
 
-test_expect_success 'add main-sub5' '
-	mkdir subdir2 &&
-	create subdir2/main-sub5 &&
-	git commit -m "main-sub5"
+next_test
+test_expect_success 'make sure "git subtree split" find the correct parent' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git branch subproj-ref FETCH_HEAD &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --branch subproj-br &&
+
+		# at this point, the new commit parent should be subproj-ref, if it is
+		# not, something went wrong (the "newparent" of "master~" commit should
+		# have been sub2, but it was not, because its cache was not set to
+		# itself)
+		check_equal "$(git log --pretty=format:%P -1 subproj-br)" "$(git rev-parse subproj-ref)"
+	)
 '
 
-test_expect_success 'split for main-sub5 without --onto' '
-	# also test that we still can split out an entirely new subtree
-	# if the parent of the first commit in the tree is not empty,
-	# then the new subtree has accidentally been attached to something
-	git subtree split --prefix subdir2 --branch mainsub5 &&
-	check_equal ''"$(git log --pretty=format:%P -1 mainsub5)"'' ""
+next_test
+test_expect_success 'split a new subtree without --onto option' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --branch subproj-br
+	) &&
+	mkdir "$subtree_test_count"/"sub dir2" &&
+	test_create_commit "$subtree_test_count" "sub dir2"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+
+		# also test that we still can split out an entirely new subtree
+		# if the parent of the first commit in the tree is not empty,
+		# then the new subtree has accidently been attached to something
+		git subtree split --prefix="sub dir2" --branch subproj2-br &&
+		check_equal "$(git log --pretty=format:%P -1 subproj2-br)" ""
+	)
 '
 
+next_test
 test_expect_success 'verify one file change per commit' '
-	x= &&
-	list=''"$(git log --pretty=format:'"'commit: %H'"' | join_commits)"'' &&
-#	test_debug "echo HERE" &&
-#	test_debug "echo ''"$list"''" &&
-	git log --pretty=format:'"'commit: %H'"' | join_commits |
-	(	while read commit a b; do
-			test_debug "echo Verifying commit "''"$commit"''
-			test_debug "echo a: "''"$a"''
-			test_debug "echo b: "''"$b"''
-			check_equal "$b" ""
-			x=1
-		done
-		check_equal "$x" "1"
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git branch sub1 FETCH_HEAD &&
+		git subtree add --prefix="sub dir" sub1
+	) &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir" --branch subproj-br
+	) &&
+	mkdir "$subtree_test_count"/"sub dir2" &&
+	test_create_commit "$subtree_test_count" "sub dir2"/main-sub2 &&
+	(
+		cd "$subtree_test_count" &&
+		git subtree split --prefix="sub dir2" --branch subproj2-br &&
+
+		x= &&
+		git log --pretty=format:"commit: %H" | join_commits |
+		(
+			while read commit a b; do
+				test_debug "echo Verifying commit $commit"
+				test_debug "echo a: $a"
+				test_debug "echo b: $b"
+				check_equal "$b" ""
+				x=1
+			done
+			check_equal "$x" 1
+		)
 	)
 '
 
-# test push
-
-cd ../..
-
-mkdir -p test-push
-
-cd test-push
-
-test_expect_success 'init main' '
-	test_create_repo main
-'
-
-test_expect_success 'init sub' '
-	test_create_repo "sub project"
-'
-
-cd ./"sub project"
-
-test_expect_success 'add subproject' '
-	create "sub project" &&
-	git commit -m "Sub project: 1" &&
-	git branch sub-branch-1
-'
-
-cd ../main
-
-test_expect_success 'make first commit and add subproject' '
-	create "main-1" &&
-	git commit -m "main: 1" &&
-	git subtree add "../sub project" --prefix "sub dir" --message "Added subproject" sub-branch-1 &&
-	check_equal "$(last_commit_message)" "Added subproject"
-'
-
-test_expect_success 'make second commit to a subproject file and push it into a sub project' '
-	create "sub dir/sub1" &&
-	git commit -m "Sub project: 2" &&
-	git subtree push "../sub project" --prefix "sub dir" sub-branch-1
-'
-
-cd ../"sub project"
-
-test_expect_success 'Test second commit is pushed' '
-	git checkout sub-branch-1 &&
-	check_equal "$(last_commit_message)" "Sub project: 2"
+next_test
+test_expect_success 'push split to subproj' '
+	subtree_test_create_repo "$subtree_test_count" &&
+	subtree_test_create_repo "$subtree_test_count/sub proj" &&
+	test_create_commit "$subtree_test_count" main1 &&
+	test_create_commit "$subtree_test_count/sub proj" sub1 &&
+	(
+		cd "$subtree_test_count" &&
+		git fetch ./"sub proj" master &&
+		git subtree add --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub1 &&
+	test_create_commit "$subtree_test_count" main2 &&
+	test_create_commit "$subtree_test_count/sub proj" sub2 &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub2 &&
+	(
+		cd $subtree_test_count/"sub proj" &&
+                git branch sub-branch-1 &&
+                cd .. &&
+		git fetch ./"sub proj" master &&
+		git subtree merge --prefix="sub dir" FETCH_HEAD
+	) &&
+	test_create_commit "$subtree_test_count" "sub dir"/main-sub3 &&
+        (
+		cd "$subtree_test_count" &&
+	        git subtree push ./"sub proj" --prefix "sub dir" sub-branch-1 &&
+                cd ./"sub proj" &&
+                git checkout sub-branch-1 &&
+         	check_equal "$(last_commit_message)" "sub dir/main-sub3"
+	)
 '
 
 test_done
-- 
2.6.1