sha1_file: convert check_sha1_signature to struct object_id

diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 4003a27e6aa117e30446bca2d91f230f144ae8a9..fa61b1a4ee4a1d5ba457cb30e5cc045f724ed503 100755 (executable)
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -18,7 +18,7 @@ test_expect_success 'initial status' '
        echo bongo bongo >file &&
        git add file &&
        git status >actual &&
-       test_i18ngrep "Initial commit" actual
+       test_i18ngrep "No commits yet" actual
 '
 
 test_expect_success 'fail initial amend' '
@@ -155,6 +155,15 @@ test_expect_success 'amend --only ignores staged contents' '
        git diff --exit-code
 '
 
+test_expect_success 'allow-empty --only ignores staged contents' '
+       echo changed-again >file &&
+       git add file &&
+       git commit --allow-empty --only -m "empty" &&
+       git cat-file blob HEAD:file >file.actual &&
+       test_cmp file.expect file.actual &&
+       git diff --exit-code
+'
+
 test_expect_success 'set up editor' '
        cat >editor <<-\EOF &&
        #!/bin/sh