netutils "k8s.io/utils/net"
)

func TestValidateWorks(t *testing.T) {
	if isValidEndpoint("", 0) {
		t.Errorf("Didn't fail for empty set")
	}
	if isValidEndpoint("foobar", 0) {
		t.Errorf("Didn't fail with invalid port")
	}
	if isValidEndpoint("foobar", -1) {
		t.Errorf("Didn't fail with a negative port")
	}
	if !isValidEndpoint("foobar", 8080) {
		t.Errorf("Failed a valid config.")
	}
}

	IPv4ZeroCIDR = "0.0.0.0/0"

	// IPv6ZeroCIDR is the CIDR block for the whole IPv6 address space
	IPv6ZeroCIDR = "::/0"
)

// isValidEndpoint checks that the given host / port pair are valid endpoint
func isValidEndpoint(host string, port int) bool {
	return host != "" && port > 0
}

// IsZeroCIDR checks whether the input CIDR string is either
// the IPv4 or IPv6 zero CIDR