Add support for IPV6 in dns resolvers

core/pkg/net/net_test.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package net
+
+import (
+	"net"
+	"testing"
+)
+
+func TestIsIPV6(t *testing.T) {
+	tests := []struct {
+		in     net.IP
+		isIPV6 bool
+	}{
+		{net.ParseIP("2001:4860:4860::8844"), true},
+		{net.ParseIP("2001:4860:4860::8888"), true},
+		{net.ParseIP("0:0:0:0:0:ffff:c868:8165"), true},
+		{net.ParseIP("2001:db8:85a3::8a2e:370:7334"), true},
+		{net.ParseIP("::1"), true},
+		{net.ParseIP("8.8.8.8"), false},
+	}
+
+	for _, test := range tests {
+		isIPV6 := IsIPV6(test.in)
+		if isIPV6 && !test.isIPV6 {
+			t.Fatalf("%v expected %v but returned %v", test.in, test.isIPV6, isIPV6)
+		}
+	}
+}