[PATCH] t7450: make test "set -e" clean

[Junio C Hamano <gitster@pobox.com>]

In order to catch mistakes like misspelling "test_expect_success",
we would like to eventually be able to run our test suite with the
"-e" option on.

Often we write "A && test_expect_success ..." and want it to mean
"If and only if A holds true, this needs to be tested", but under
"set -e", this will cause failure when A does not hold true.  We
need to write "!A || test_expect_success ..." if we want to run the
test conditionally.

Or write it properly with if/then/fi, perhaps like:

	if ! A
	then
		test_expect_success ...
	fi

Make sure we do not fail unnecessarily under "set -e".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t7450-bad-git-dotfiles.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git i/t/t7450-bad-git-dotfiles.sh w/t/t7450-bad-git-dotfiles.sh
index f512eed278..047e4085d7 100755
--- i/t/t7450-bad-git-dotfiles.sh
+++ w/t/t7450-bad-git-dotfiles.sh
@@ -220,7 +220,7 @@ check_dotx_symlink () {
 		)
 	'
 
-	test -n "$refuse_index" &&
+	test -z "$refuse_index" ||
 	test_expect_success "refuse to load symlinked $name into index ($type)" '
 		test_must_fail \
 			git -C $dir \