From 37a63faae58aee5cd2dd9806d2e98c9ad998a7e5 Mon Sep 17 00:00:00 2001
From: Denton Liu <liu.denton@gmail.com>
Date: Mon, 6 Jan 2020 23:53:13 -0500
Subject: t4124: only mark git command with test_must_fail

The test_must_fail function should only be used for git commands since
we should assume that external commands work sanely. Since apply_patch
wraps a sed and git invocation, rewrite it to accept an `!` argument
which would cause only the git command to be prefixed with
`test_must_fail`.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t4124-apply-ws-rule.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/t/t4124-apply-ws-rule.sh b/t/t4124-apply-ws-rule.sh
index ff51e9e789..971a5a7512 100755
--- a/t/t4124-apply-ws-rule.sh
+++ b/t/t4124-apply-ws-rule.sh
@@ -35,9 +35,15 @@ prepare_test_file () {
 }
 
 apply_patch () {
+	cmd_prefix= &&
+	if test "x$1" = 'x!'
+	then
+		cmd_prefix=test_must_fail &&
+		shift
+	fi &&
 	>target &&
 	sed -e "s|\([ab]\)/file|\1/target|" <patch |
-	git apply "$@"
+	$cmd_prefix git apply "$@"
 }
 
 test_fix () {
@@ -99,7 +105,7 @@ test_expect_success 'whitespace=warn, default rule' '
 
 test_expect_success 'whitespace=error-all, default rule' '
 
-	test_must_fail apply_patch --whitespace=error-all &&
+	apply_patch ! --whitespace=error-all &&
 	test_must_be_empty target
 
 '
-- 
cgit v1.2.3