for-each-ref: test :remotename and :remoteref

This not only prevents regressions, but also serves as documentation
what this new feature is expected to do.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t6300-for-each-ref.sh

@@ -675,4 +675,36 @@ test_expect_success 'Verify usage of %(symref:rstrip) atom' '
 	test_cmp expected actual
 '
 
+test_expect_success ':remotename and :remoteref' '
+	git init remote-tests &&
+	(
+		cd remote-tests &&
+		test_commit initial &&
+		git remote add from fifth.coffee:blub &&
+		git config branch.master.remote from &&
+		git config branch.master.merge refs/heads/stable &&
+		git remote add to southridge.audio:repo &&
+		git config remote.to.push "refs/heads/*:refs/heads/pushed/*" &&
+		git config branch.master.pushRemote to &&
+		for pair in "%(upstream)=refs/remotes/from/stable" \
+			"%(upstream:remotename)=from" \
+			"%(upstream:remoteref)=refs/heads/stable" \
+			"%(push)=refs/remotes/to/pushed/master" \
+			"%(push:remotename)=to" \
+			"%(push:remoteref)=refs/heads/pushed/master"
+		do
+			echo "${pair#*=}" >expect &&
+			git for-each-ref --format="${pair%=*}" \
+				refs/heads/master >actual &&
+			test_cmp expect actual
+		done &&
+		git branch push-simple &&
+		git config branch.push-simple.pushRemote from &&
+		actual="$(git for-each-ref \
+			--format="%(push:remotename),%(push:remoteref)" \
+			refs/heads/push-simple)" &&
+		test from, = "$actual"
+	)
+'
+
 test_done