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

diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh
index 2d22a17c4a7f9dcc402e89e73ce01c97ebd4ba48..6ee4d3f2d91f435ad29010b16523ea4417dc625d 100755 (executable)
--- a/t/t5310-pack-bitmaps.sh
+++ b/t/t5310-pack-bitmaps.sh
@@ -309,9 +309,8 @@ test_expect_success 'pack reuse respects --honor-pack-keep' '
        done &&
        reusable_pack --honor-pack-keep >empty.pack &&
        git index-pack empty.pack &&
-       >expect &&
        git show-index <empty.idx >actual &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'pack reuse respects --local' '
@@ -319,17 +318,15 @@ test_expect_success 'pack reuse respects --local' '
        test_when_finished "mv alt.git/objects/pack/* .git/objects/pack/" &&
        reusable_pack --local >empty.pack &&
        git index-pack empty.pack &&
-       >expect &&
        git show-index <empty.idx >actual &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'pack reuse respects --incremental' '
        reusable_pack --incremental >empty.pack &&
        git index-pack empty.pack &&
-       >expect &&
        git show-index <empty.idx >actual &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'truncated bitmap fails gracefully' '