[PATCH v2 10/10] tests: change "cat && chmod +x" to use "test_hook"

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Refactor various test code to use the "test_hook" helper. This change:

 - Fixes the long-standing issues with those tests using "#!/bin/sh"
   instead of "#!$SHELL_PATH". Using "#!/bin/sh" here happened to work
   because this code was so simple that it e.g. worked on Solaris
   /bin/sh.

 - Removes the "mkdir .git/hooks" invocation, as explained in a
   preceding commit we'll rely on the default templates to create that
   directory for us.

For the test in "t5402-post-merge-hook.sh" it's easier and more
correct to unroll the for-loop into a test_expect_success, so let's do
that.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 t/t3412-rebase-root.sh       | 12 +++---------
 t/t3413-rebase-hook.sh       | 12 +++---------
 t/t5401-update-hooks.sh      | 16 ++++------------
 t/t5402-post-merge-hook.sh   | 16 +++++++++-------
 t/t5407-post-rewrite-hook.sh |  4 +---
 t/t5516-fetch-push.sh        | 19 ++++---------------
 t/t5541-http-push-smart.sh   |  4 +---
 t/t5601-clone.sh             |  4 +---
 8 files changed, 26 insertions(+), 61 deletions(-)

diff --git a/t/t3412-rebase-root.sh b/t/t3412-rebase-root.sh
index 239a9343d34..58371d8a547 100755
--- a/t/t3412-rebase-root.sh
+++ b/t/t3412-rebase-root.sh
@@ -31,12 +31,9 @@ test_expect_success 'rebase --root fails with too many args' '
 '
 
 test_expect_success 'setup pre-rebase hook' '
-	mkdir -p .git/hooks &&
-	cat >.git/hooks/pre-rebase <<-EOF &&
-	#!$SHELL_PATH
-	echo "\$1,\$2" >.git/PRE-REBASE-INPUT
+	test_hook --setup pre-rebase <<-\EOF
+	echo "$1,$2" >.git/PRE-REBASE-INPUT
 	EOF
-	chmod +x .git/hooks/pre-rebase
 '
 cat > expect <<EOF
 4
@@ -141,12 +138,9 @@ commit work7~5
 EOF
 
 test_expect_success 'setup pre-rebase hook that fails' '
-	mkdir -p .git/hooks &&
-	cat >.git/hooks/pre-rebase <<-EOF &&
-	#!$SHELL_PATH
+	test_hook --setup --clobber pre-rebase <<-\EOF
 	false
 	EOF
-	chmod +x .git/hooks/pre-rebase
 '
 
 test_expect_success 'pre-rebase hook stops rebase' '
diff --git a/t/t3413-rebase-hook.sh b/t/t3413-rebase-hook.sh
index bb241b26b2e..9fab0d779bb 100755
--- a/t/t3413-rebase-hook.sh
+++ b/t/t3413-rebase-hook.sh
@@ -41,12 +41,9 @@ test_expect_success 'rebase -i' '
 '
 
 test_expect_success 'setup pre-rebase hook' '
-	mkdir -p .git/hooks &&
-	cat >.git/hooks/pre-rebase <<-EOF &&
-	#!$SHELL_PATH
-	echo "\$1,\$2" >.git/PRE-REBASE-INPUT
+	test_hook --setup pre-rebase <<-\EOF
+	echo "$1,$2" >.git/PRE-REBASE-INPUT
 	EOF
-	chmod +x .git/hooks/pre-rebase
 '
 
 test_expect_success 'pre-rebase hook gets correct input (1)' '
@@ -102,12 +99,9 @@ test_expect_success 'pre-rebase hook gets correct input (6)' '
 '
 
 test_expect_success 'setup pre-rebase hook that fails' '
-	mkdir -p .git/hooks &&
-	cat >.git/hooks/pre-rebase <<-EOF &&
-	#!$SHELL_PATH
+	test_hook --setup --clobber pre-rebase <<-\EOF
 	false
 	EOF
-	chmod +x .git/hooks/pre-rebase
 '
 
 test_expect_success 'pre-rebase hook stops rebase (1)' '
diff --git a/t/t5401-update-hooks.sh b/t/t5401-update-hooks.sh
index 6392f71795d..d5771b96114 100755
--- a/t/t5401-update-hooks.sh
+++ b/t/t5401-update-hooks.sh
@@ -22,42 +22,34 @@ test_expect_success setup '
 	git update-ref refs/heads/main $commit1 &&
 	git update-ref refs/heads/tofail $commit0 &&
 
-	cat >victim.git/hooks/pre-receive <<-\EOF &&
-	#!/bin/sh
+	test_hook --setup -C victim.git pre-receive <<-\EOF &&
 	printf %s "$@" >>$GIT_DIR/pre-receive.args
 	cat - >$GIT_DIR/pre-receive.stdin
 	echo STDOUT pre-receive
 	echo STDERR pre-receive >&2
 	EOF
-	chmod u+x victim.git/hooks/pre-receive &&
 
-	cat >victim.git/hooks/update <<-\EOF &&
-	#!/bin/sh
+	test_hook --setup -C victim.git update <<-\EOF &&
 	echo "$@" >>$GIT_DIR/update.args
 	read x; printf %s "$x" >$GIT_DIR/update.stdin
 	echo STDOUT update $1
 	echo STDERR update $1 >&2
 	test "$1" = refs/heads/main || exit
 	EOF
-	chmod u+x victim.git/hooks/update &&
 
-	cat >victim.git/hooks/post-receive <<-\EOF &&
-	#!/bin/sh
+	test_hook --setup -C victim.git post-receive <<-\EOF &&
 	printf %s "$@" >>$GIT_DIR/post-receive.args
 	cat - >$GIT_DIR/post-receive.stdin
 	echo STDOUT post-receive
 	echo STDERR post-receive >&2
 	EOF
-	chmod u+x victim.git/hooks/post-receive &&
 
-	cat >victim.git/hooks/post-update <<-\EOF &&
-	#!/bin/sh
+	test_hook --setup -C victim.git post-update <<-\EOF
 	echo "$@" >>$GIT_DIR/post-update.args
 	read x; printf %s "$x" >$GIT_DIR/post-update.stdin
 	echo STDOUT post-update
 	echo STDERR post-update >&2
 	EOF
-	chmod u+x victim.git/hooks/post-update
 '
 
 test_expect_success push '
diff --git a/t/t5402-post-merge-hook.sh b/t/t5402-post-merge-hook.sh
index 3e5e19c7191..915af2de95e 100755
--- a/t/t5402-post-merge-hook.sh
+++ b/t/t5402-post-merge-hook.sh
@@ -25,13 +25,15 @@ test_expect_success setup '
 	GIT_DIR=clone2/.git git update-index --add a
 '
 
-for clone in 1 2; do
-	cat >clone${clone}/.git/hooks/post-merge <<'EOF'
-#!/bin/sh
-echo $@ >> $GIT_DIR/post-merge.args
-EOF
-	chmod u+x clone${clone}/.git/hooks/post-merge
-done
+test_expect_success 'setup clone hooks' '
+	test_when_finished "rm -f hook" &&
+	cat >hook <<-\EOF &&
+	echo $@ >>$GIT_DIR/post-merge.args
+	EOF
+
+	test_hook --setup -C clone1 post-merge <hook &&
+	test_hook --setup -C clone2 post-merge <hook
+'
 
 test_expect_success 'post-merge does not run for up-to-date ' '
 	GIT_DIR=clone1/.git git merge $commit0 &&
diff --git a/t/t5407-post-rewrite-hook.sh b/t/t5407-post-rewrite-hook.sh
index 64f40ff7776..5f3ff051ca2 100755
--- a/t/t5407-post-rewrite-hook.sh
+++ b/t/t5407-post-rewrite-hook.sh
@@ -19,12 +19,10 @@ test_expect_success 'setup' '
 	test_commit F foo F &&
 	git checkout main &&
 
-	cat >.git/hooks/post-rewrite <<-EOF &&
-	#!/bin/sh
+	test_hook --setup post-rewrite <<-EOF
 	echo \$@ > "$TRASH_DIRECTORY"/post-rewrite.args
 	cat > "$TRASH_DIRECTORY"/post-rewrite.data
 	EOF
-	chmod u+x .git/hooks/post-rewrite
 '
 
 clear_hook_input () {
diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index b689baf01a9..4dfb080433e 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -55,35 +55,24 @@ mk_test () {
 mk_test_with_hooks() {
 	repo_name=$1
 	mk_test "$@" &&
-
-	cat >"$repo_name"/.git/hooks/pre-receive <<-'EOF' &&
-	#!/bin/sh
+	test_hook -C "$repo_name" pre-receive <<-'EOF' &&
 	cat - >>pre-receive.actual
 	EOF
 
-	cat >"$repo_name"/.git/hooks/update <<-'EOF' &&
-	#!/bin/sh
+	test_hook -C "$repo_name" update <<-'EOF' &&
 	printf "%s %s %s\n" "$@" >>update.actual
 	EOF
 
-	cat >"$repo_name"/.git/hooks/post-receive <<-'EOF' &&
-	#!/bin/sh
+	test_hook -C "$repo_name" post-receive <<-'EOF' &&
 	cat - >>post-receive.actual
 	EOF
 
-	cat >"$repo_name"/.git/hooks/post-update <<-'EOF' &&
-	#!/bin/sh
+	test_hook -C "$repo_name" post-update <<-'EOF'
 	for ref in "$@"
 	do
 		printf "%s\n" "$ref" >>post-update.actual
 	done
 	EOF
-
-	chmod +x \
-	      "$repo_name"/.git/hooks/pre-receive \
-	      "$repo_name"/.git/hooks/update \
-	      "$repo_name"/.git/hooks/post-receive \
-	      "$repo_name"/.git/hooks/post-update
 }
 
 mk_child() {
diff --git a/t/t5541-http-push-smart.sh b/t/t5541-http-push-smart.sh
index 0043b718f08..ab4b5cfcd11 100755
--- a/t/t5541-http-push-smart.sh
+++ b/t/t5541-http-push-smart.sh
@@ -97,11 +97,9 @@ test_expect_success 'create and delete remote branch' '
 '
 
 test_expect_success 'setup rejected update hook' '
-	cat >"$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git/hooks/update" <<-EOF &&
-	#!/bin/sh
+	test_hook --setup -C "$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" update <<-\EOF &&
 	exit 1
 	EOF
-	chmod a+x "$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git/hooks/update" &&
 
 	cat >exp <<-EOF
 	remote: error: hook declined to update refs/heads/dev2
diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh
index 83c24fc97a7..4a61f2c901e 100755
--- a/t/t5601-clone.sh
+++ b/t/t5601-clone.sh
@@ -79,12 +79,10 @@ test_expect_success 'clone from hooks' '
 	cd .. &&
 	git init r1 &&
 	cd r1 &&
-	cat >.git/hooks/pre-commit <<-\EOF &&
-	#!/bin/sh
+	test_hook pre-commit <<-\EOF &&
 	git clone ../r0 ../r2
 	exit 1
 	EOF
-	chmod u+x .git/hooks/pre-commit &&
 	: >file &&
 	git add file &&
 	test_must_fail git commit -m invoke-hook &&
-- 
2.35.1.1242.gfeba0eae32b