test-dir-iterator: do not assume errno values

diff --git a/t/t7510-signed-commit.sh b/t/t7510-signed-commit.sh
index 86d3f93fa22e45ba9dda24c49ec02df14e22ebc3..682b23a06818cddf6ff89e11b4395d32cebe9758 100755 (executable)
--- a/t/t7510-signed-commit.sh
+++ b/t/t7510-signed-commit.sh
@@ -49,15 +49,28 @@ test_expect_success GPG 'create signed commits' '
        git tag eighth-signed-alt &&
 
        # commit.gpgsign is still on but this must not be signed
-       git tag ninth-unsigned $(echo 9 | git commit-tree HEAD^{tree}) &&
+       echo 9 | git commit-tree HEAD^{tree} >oid &&
+       test_line_count = 1 oid &&
+       git tag ninth-unsigned $(cat oid) &&
        # explicit -S of course must sign.
-       git tag tenth-signed $(echo 9 | git commit-tree -S HEAD^{tree})
+       echo 10 | git commit-tree -S HEAD^{tree} >oid &&
+       test_line_count = 1 oid &&
+       git tag tenth-signed $(cat oid) &&
+
+       # --gpg-sign[=<key-id>] must sign.
+       echo 11 | git commit-tree --gpg-sign HEAD^{tree} >oid &&
+       test_line_count = 1 oid &&
+       git tag eleventh-signed $(cat oid) &&
+       echo 12 | git commit-tree --gpg-sign=B7227189 HEAD^{tree} >oid &&
+       test_line_count = 1 oid &&
+       git tag twelfth-signed-alt $(cat oid)
 '
 
 test_expect_success GPG 'verify and show signatures' '
        (
                for commit in initial second merge fourth-signed \
-                       fifth-signed sixth-signed seventh-signed tenth-signed
+                       fifth-signed sixth-signed seventh-signed tenth-signed \
+                       eleventh-signed
                do
                        git verify-commit $commit &&
                        git show --pretty=short --show-signature $commit >actual &&
@@ -78,7 +91,7 @@ test_expect_success GPG 'verify and show signatures' '
                done
        ) &&
        (
-               for commit in eighth-signed-alt
+               for commit in eighth-signed-alt twelfth-signed-alt
                do
                        git show --pretty=short --show-signature $commit >actual &&
                        grep "Good signature from" actual &&