From 5ee71afca3cee0de47c4cca2ff510ac6b5c3782d Mon Sep 17 00:00:00 2001
From: Salman Aljammaz <s@0x65.net>
Date: Mon, 21 Oct 2013 21:20:43 +0100
Subject: [PATCH] auth: don't fail IPv6 test if host can't resolve localhost to
 [::1]

Change-Id: I3eade17e593da67d33be86563fe179ac6464c561
---
 pkg/auth/auth_test.go | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/pkg/auth/auth_test.go b/pkg/auth/auth_test.go
index f8e922894..eeab660d8 100644
--- a/pkg/auth/auth_test.go
+++ b/pkg/auth/auth_test.go
@@ -104,7 +104,26 @@ func TestLocalhostAuthIPv6(t *testing.T) {
 	}
 
 	testLoginRequest(t, &http.Client{Transport: trans}, "http://[::1]:"+port)
-	testLoginRequest(t, &http.Client{Transport: trans}, "http://localhost:"+port)
+
+	// See if we can get an IPv6 from resolving localhost
+	localips, err := net.LookupIP("localhost")
+	if err != nil {
+		t.Skipf("skipping IPv6 test; resolving localhost failed with %v", err)
+	}
+	if hasIPv6(localips) {
+		testLoginRequest(t, &http.Client{Transport: trans}, "http://localhost:"+port)
+	} else {
+		t.Logf("incomplete IPv6 test; resolving localhost didn't return any IPv6 addresses")
+	}
+}
+
+func hasIPv6(ips []net.IP) bool {
+	for _, ip := range ips {
+		if ip.To4() == nil {
+			return true
+		}
+	}
+	return false
 }
 
 func TestLocalhostAuthIPv4(t *testing.T) {