[PATCH v2] test: use test_must_be_empty F instead of test_cmp empty F

["René Scharfe" <l.s.r@web.de>]

Use test_must_be_empty instead of comparing it to an empty file.  That's
more efficient, as the function only needs built-in meta-data only check
in the usual case, and provides nicer debug output otherwise.

Helped-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
---
Change since v1: Don't re-add PIPE prerequisite.

 t/t1011-read-tree-sparse-checkout.sh | 3 +--
 t/t9010-svn-fe.sh                    | 4 +---
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/t/t1011-read-tree-sparse-checkout.sh b/t/t1011-read-tree-sparse-checkout.sh
index ba71b159ba..eb44bafb59 100755
--- a/t/t1011-read-tree-sparse-checkout.sh
+++ b/t/t1011-read-tree-sparse-checkout.sh
@@ -215,7 +215,6 @@ test_expect_success 'read-tree adds to worktree, dirty case' '
 '

 test_expect_success 'index removal and worktree narrowing at the same time' '
-	>empty &&
 	echo init.t >.git/info/sparse-checkout &&
 	echo sub/added >>.git/info/sparse-checkout &&
 	git checkout -f top &&
@@ -223,7 +222,7 @@ test_expect_success 'index removal and worktree narrowing at the same time' '
 	git checkout removed &&
 	git ls-files sub/added >result &&
 	test ! -f sub/added &&
-	test_cmp empty result
+	test_must_be_empty result
 '

 test_expect_success 'read-tree --reset removes outside worktree' '
diff --git a/t/t9010-svn-fe.sh b/t/t9010-svn-fe.sh
index 0b20b07e68..c90fdc5c89 100755
--- a/t/t9010-svn-fe.sh
+++ b/t/t9010-svn-fe.sh
@@ -53,8 +53,6 @@ text_no_props () {
 	printf "%s\n" "$text"
 }

->empty
-
 test_expect_success 'empty dump' '
 	reinit_git &&
 	echo "SVN-fs-dump-format-version: 2" >input &&
@@ -208,7 +206,7 @@ test_expect_failure 'timestamp and empty file' '
 	test_cmp expect.date actual.date &&
 	test_cmp expect.files actual.files &&
 	git checkout HEAD empty-file &&
-	test_cmp empty file
+	test_must_be_empty file
 '

 test_expect_success 'directory with files' '
--
2.24.0