[PATCH v4 04/10] t0001: handle `diff --no-index` gracefully

From: Johannes Schindelin via GitGitGadget <gitgitgadget@gmail.com>
Date: Dec 17, 2025, 14:18 UTC
Message-ID: <70237394c64101b3d70a1d31bd4a763997474cb1.1765981126.git.gitgitgadget@gmail.com>
In-Reply-To: <pull.2009.v4.git.1765981126.gitgitgadget@gmail.com>

From: Johannes Schindelin <johannes.schindelin@gmx.de>

The test case 're-init to move gitdir symlink' wants to compare the contents of `newdir/.git`, which is a symbolic link pointing to a file. However, `git diff --no-index`, which is used by `test_cmp` on Windows, does not resolve symlinks; It shows the symlink _target_ instead (with a file mode of 120000). That is totally unexpected by the test case, which as a consequence fails, meaning that it's a bug in the test case itself.

Co-authored-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 t/t0001-init.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index 618da080dc..e4d32bb4d2 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -425,7 +425,11 @@ test_expect_success SYMLINKS 're-init to move gitdir symlink' '
 	git init --separate-git-dir ../realgitdir
 	) &&
 	echo "gitdir: $(pwd)/realgitdir" >expected &&
-	test_cmp expected newdir/.git &&
+	case "$GIT_TEST_CMP" in
+	# `git diff --no-index` does not resolve symlinks
+	*--no-index*) cmp expected newdir/.git;;
+	*) test_cmp expected newdir/.git;;
+	esac &&
 	test_cmp expected newdir/here &&
 	test_path_is_dir realgitdir/refs
 '

-- 
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