[PATCH v2] t3200: refactor symlink test from hn/refs-errno-cleanup

["Carlo Marcelo Arenas Belón" <carenas@gmail.com>]

d1931bcf0d (refs: make errno output explicit for refs_resolve_ref_unsafe,
2021-07-20) add a test for a crash when refs is a symlink, but it fails
on windows.

add the missing SYMLINKS dependency and while at it, refactor it slightly
to comply better with the CodingGuidelines.

Reported-by: Jeff King <peff@peff.net>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
---
v2:
* update subject for clarity; might be worth squashing instead into 3d63ce75e
  (refs: explicitly return failure_errno from parse_loose_ref_contents,
  2021-07-20)
* change from --git-dir to -C for clarity
* add reporting for errors to the for loop as suggested by Eric

 t/t3200-branch.sh | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index dd17718160..eacb6bcd35 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -109,17 +109,22 @@ test_expect_success 'git branch -m n/n n should work' '
 	git reflog exists refs/heads/n
 '
 
-test_expect_success 'git branch -m with symlinked .git/refs' '
+test_expect_success SYMLINKS 'git branch -m with symlinked .git/refs' '
 	git init subdir &&
 	test_when_finished "rm -rf subdir" &&
-	(cd subdir &&
-		for d in refs objects packed-refs ; do
-		rm -rf .git/$d &&
-		ln -s ../../.git/$d .git/$d ; done ) &&
-	git --git-dir subdir/.git/ branch rename-src &&
-	expect=$(git rev-parse rename-src) &&
-	git --git-dir subdir/.git/ branch -m rename-src rename-dest &&
-	test $(git rev-parse rename-dest) = "$expect" &&
+	(
+		cd subdir &&
+		for d in refs objects packed-refs
+		do
+			rm -rf .git/$d &&
+			ln -s ../../.git/$d .git/$d || exit 1
+		done
+	) &&
+	git -C subdir branch rename-src &&
+	git rev-parse rename-src >expect &&
+	git -C subdir branch -m rename-src rename-dest &&
+	git rev-parse rename-dest >actual &&
+	test_cmp expect actual &&
 	git branch -D rename-dest
 '
 

base-commit: d1931bcf0d5ef75cdaf836347f4aefce902a6a38
-- 
2.33.0.476.gf000ecbed9