fsmonitor: update GIT_TEST_FSMONITOR support

diff --git a/t/t5401-update-hooks.sh b/t/t5401-update-hooks.sh
index b5f886a0e264eed3d3ab54176b01912bbb8badb6..956d69f5b1773d3d697e4bb2ca9d50786c42b74f 100755 (executable)
--- a/t/t5401-update-hooks.sh
+++ b/t/t5401-update-hooks.sh
@@ -104,17 +104,17 @@ test_expect_success 'post-update hook arguments' '
 '
 
 test_expect_success 'all hook stdin is /dev/null' '
-       ! test -s victim.git/update.stdin &&
-       ! test -s victim.git/post-update.stdin
+       test_must_be_empty victim.git/update.stdin &&
+       test_must_be_empty victim.git/post-update.stdin
 '
 
 test_expect_success 'all *-receive hook args are empty' '
-       ! test -s victim.git/pre-receive.args &&
-       ! test -s victim.git/post-receive.args
+       test_must_be_empty victim.git/pre-receive.args &&
+       test_must_be_empty victim.git/post-receive.args
 '
 
 test_expect_success 'send-pack produced no output' '
-       ! test -s send.out
+       test_must_be_empty send.out
 '
 
 cat <<EOF >expect