Use the modern syntax of git-diff-files in t2002-checkout-cache-u.sh

diff --git a/t/t2200-add-update.sh b/t/t2200-add-update.sh
index 24f892f79386478fd5f1162654cb9b72d940bbe4..b664341926071a3286ba949dc09b5e62b280e79a 100755 (executable)
--- a/t/t2200-add-update.sh
+++ b/t/t2200-add-update.sh
@@ -62,7 +62,7 @@ test_expect_success 'cache tree has not been corrupted' '
        sed -e "s/ 0    /       /" >expect &&
        git ls-tree -r $(git write-tree) |
        sed -e "s/ blob / /" >current &&
-       diff -u expect current
+       test_cmp expect current
 
 '