ref-filter: implement %(if), %(then), and %(else) atoms

diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index 039509a9cb94ef5c653df09e0453ac83157bf184..aea1dfc7148e4885e52a579ca60ee622c49b5693 100755 (executable)
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -563,4 +563,29 @@ test_expect_success 'do not dereference NULL upon %(HEAD) on unborn branch' '
        test_cmp expect actual
 '
 
+cat >trailers <<EOF
+Reviewed-by: A U Thor <author@example.com>
+Signed-off-by: A U Thor <author@example.com>
+EOF
+
+test_expect_success 'basic atom: head contents:trailers' '
+       echo "Some contents" > two &&
+       git add two &&
+       git commit -F - <<-EOF &&
+       trailers: this commit message has trailers
+
+       Some message contents
+
+       $(cat trailers)
+       EOF
+       git for-each-ref --format="%(contents:trailers)" refs/heads/master >actual &&
+       sanitize_pgp <actual >actual.clean &&
+       # git for-each-ref ends with a blank line
+       cat >expect <<-EOF &&
+       $(cat trailers)
+
+       EOF
+       test_cmp expect actual.clean
+'
+
 test_done