tests: use 'test_must_be_empty' instead of 'test_cmp <empty> <out>'

diff --git a/t/t1700-split-index.sh b/t/t1700-split-index.sh
index 1e81b33b2e3a23a135c9b9440787a6e0c0deaa22..f85ba5780397cdca3d3b22ca453f153f43ae86ae 100755 (executable)
--- a/t/t1700-split-index.sh
+++ b/t/t1700-split-index.sh
@@ -143,9 +143,7 @@ test_expect_success 'remove file not in base index' '
 test_expect_success 'remove file in base index' '
        git update-index --force-remove one &&
        git ls-files --stage >ls-files.actual &&
-       cat >ls-files.expect <<-EOF &&
-       EOF
-       test_cmp ls-files.expect ls-files.actual &&
+       test_must_be_empty ls-files.actual &&
 
        test-tool dump-split-index .git/index | sed "/^own/d" >actual &&
        cat >expect <<-EOF &&