[PATCH v2 05/21] t1401-symbolic-ref: avoid direct filesystem access

From

Han-Wen Nienhuys via GitGitGadget <gitgitgadget@gmail.com>

Date

Apr 27, 2021, 10:38 UTC

Message-ID

<248d9ffe79272c7a6efef64512d72ccb9a91349a.1619519903.git.gitgitgadget@gmail.com>

In-Reply-To

<pull.1008.v2.git.git.1619519903.gitgitgadget@gmail.com>

From: Han-Wen Nienhuys <hanwen@google.com>

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
---
 t/t1401-symbolic-ref.sh | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/t/t1401-symbolic-ref.sh b/t/t1401-symbolic-ref.sh
index a4ebb0b65fec..315a62f78019 100755
--- a/t/t1401-symbolic-ref.sh
+++ b/t/t1401-symbolic-ref.sh
@@ -3,21 +3,20 @@
 test_description='basic symbolic-ref tests'
 . ./test-lib.sh
 
-# If the tests munging HEAD fail, they can break detection of
-# the git repo, meaning that further tests will operate on
-# the surrounding git repo instead of the trash directory.
-reset_to_sane() {
-	echo ref: refs/heads/foo >.git/HEAD
-}
-
-test_expect_success 'symbolic-ref writes HEAD' '
+test_expect_success 'setup' '
 	git symbolic-ref HEAD refs/heads/foo &&
-	echo ref: refs/heads/foo >expect &&
-	test_cmp expect .git/HEAD
+	test_commit file &&
+	"$TAR" cf .git.tar .git/
 '
 
-test_expect_success 'symbolic-ref reads HEAD' '
-	echo refs/heads/foo >expect &&
+reset_to_sane() {
+	rm -rf .git &&
+	"$TAR" xf .git.tar
+}
+
+test_expect_success 'symbolic-ref read/write roundtrip' '
+	git symbolic-ref HEAD refs/heads/read-write-roundtrip &&
+	echo refs/heads/read-write-roundtrip >expect &&
 	git symbolic-ref HEAD >actual &&
 	test_cmp expect actual
 '
@@ -25,12 +24,13 @@ test_expect_success 'symbolic-ref reads HEAD' '
 test_expect_success 'symbolic-ref refuses non-ref for HEAD' '
 	test_must_fail git symbolic-ref HEAD foo
 '
+
 reset_to_sane
 
 test_expect_success 'symbolic-ref refuses bare sha1' '
-	echo content >file && git add file && git commit -m one &&
 	test_must_fail git symbolic-ref HEAD $(git rev-parse HEAD)
 '
+
 reset_to_sane
 
 test_expect_success 'HEAD cannot be removed' '
@@ -42,16 +42,16 @@ reset_to_sane
 test_expect_success 'symbolic-ref can be deleted' '
 	git symbolic-ref NOTHEAD refs/heads/foo &&
 	git symbolic-ref -d NOTHEAD &&
-	test_path_is_file .git/refs/heads/foo &&
-	test_path_is_missing .git/NOTHEAD
+	git rev-parse refs/heads/foo &&
+	test_must_fail git symbolic-ref NOTHEAD
 '
 reset_to_sane
 
 test_expect_success 'symbolic-ref can delete dangling symref' '
 	git symbolic-ref NOTHEAD refs/heads/missing &&
 	git symbolic-ref -d NOTHEAD &&
-	test_path_is_missing .git/refs/heads/missing &&
-	test_path_is_missing .git/NOTHEAD
+	test_must_fail git rev-parse refs/heads/missing &&
+	test_must_fail git symbolic-ref NOTHEAD
 '
 reset_to_sane
 

-- 
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