test_must_fail git symbolic-ref HEAD refs/heads/whatever
'
+test_expect_success 'symbolic-ref writes reflog entry' '
+ git checkout -b log1 &&
+ test_commit one &&
+ git checkout -b log2 &&
+ test_commit two &&
+ git checkout --orphan orphan &&
+ git symbolic-ref -m create HEAD refs/heads/log1 &&
+ git symbolic-ref -m update HEAD refs/heads/log2 &&
+ cat >expect <<-\EOF &&
+ update
+ create
+ EOF
+ git log --format=%gs -g >actual &&
+ test_cmp expect actual
+'
+
test_done