tests: use 'test_must_be_empty' instead of 'test ! -s'

diff --git a/t/t5512-ls-remote.sh b/t/t5512-ls-remote.sh
index 6a949484d090ea2df02603f9d82bf4f203a799e9..f2c05ae0b4e5149b9d1b05a8a3dd11b44d1bb2c0 100755 (executable)
--- a/t/t5512-ls-remote.sh
+++ b/t/t5512-ls-remote.sh
@@ -155,14 +155,12 @@ test_expect_success 'die with non-2 for wrong repository even with --exit-code'
 
 test_expect_success 'Report success even when nothing matches' '
        git ls-remote other.git "refs/nsn/*" >actual &&
-       >expect &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'Report no-match with --exit-code' '
        test_expect_code 2 git ls-remote --exit-code other.git "refs/nsn/*" >actual &&
-       >expect &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'Report match with --exit-code' '