etcd := new(EtcdConnection)
	result, err := etcd.CheckEtcdServers()
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if result {
		t.Fatal("CheckEtcdServers should not have succeeded")
	}
}

func TestCheckEtcdServersUri(t *testing.T) {
	etcd := new(EtcdConnection)
	etcd.ServerList = []string{"-invalid uri$@#%"}
	result, err := etcd.CheckEtcdServers()
	if err == nil {

	if err != nil {
		return &url.URL{}, fmt.Errorf("unable to parse etcd url: %v", err)
	}
	return connURL, nil
}

// CheckEtcdServers will attempt to reach all etcd servers once. If any
// can be reached, return true.
func (con EtcdConnection) CheckEtcdServers() (done bool, err error) {
	// Attempt to reach every Etcd server randomly.
	serverNumber := len(con.ServerList)
	serverPerms := rand.Perm(serverNumber)