[PATCH] t7614: avoid hiding git's exit code in a pipe

[Shlok Kulshreshtha <diy2903@gmail.com>]

The exit code of the upstream command in a pipe is ignored, so in

	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual

a crash of "git cat-file" would go unnoticed: the exit code of the
pipeline is that of "sed", which happily succeeds on empty input. The
test would thus pass even though "git cat-file" failed.

Write the output of "git cat-file" to a file first and run "sed" on
that file, so that the exit codes of both commands are checked by the
&&-chain.

Signed-off-by: Shlok Kulshreshtha <diy2903@gmail.com>
---
This is a microproject ("Avoid suppressing git's exit code in test
scripts"), applying the same fix as c6f44e1da5 (t9813: avoid using
pipes) to another script. A search of the list did not turn up anyone
working on t7614; please let me know if it is already taken.

 t/t7614-merge-signoff.sh | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/t/t7614-merge-signoff.sh b/t/t7614-merge-signoff.sh
index fee258d4f0..e58bf07b7a 100755
--- a/t/t7614-merge-signoff.sh
+++ b/t/t7614-merge-signoff.sh
@@ -45,7 +45,8 @@ test_expect_success 'git merge --signoff adds a sign-off line' '
 	test_commit main-branch-2 file2 2 &&
 	git checkout other-branch &&
 	git merge main --signoff --no-edit &&
-	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
+	git cat-file commit HEAD >commit &&
+	sed -e "1,/^\$/d" commit >actual &&
 	test_cmp expected-signed actual
 '
 
@@ -55,7 +56,8 @@ test_expect_success 'git merge does not add a sign-off line' '
 	test_commit main-branch-3 file3 3 &&
 	git checkout other-branch &&
 	git merge main --no-edit &&
-	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
+	git cat-file commit HEAD >commit &&
+	sed -e "1,/^\$/d" commit >actual &&
 	test_cmp expected-unsigned actual
 '
 
@@ -65,7 +67,8 @@ test_expect_success 'git merge --no-signoff flag cancels --signoff flag' '
 	test_commit main-branch-4 file4 4 &&
 	git checkout other-branch &&
 	git merge main --no-edit --signoff --no-signoff &&
-	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
+	git cat-file commit HEAD >commit &&
+	sed -e "1,/^\$/d" commit >actual &&
 	test_cmp expected-unsigned actual
 '
 
-- 
2.52.0