package opts // import "github.com/docker/docker/opts"

 
 import (
 	"net"
 	"testing"
 )
 
 func TestIpOptString(t *testing.T) {
 	addresses := []string{"", "0.0.0.0"}
 	var ip net.IP
 
 	for _, address := range addresses {

 		stringAddress := NewIPOpt(&ip, address).String()

 		if stringAddress != address {
 			t.Fatalf("IpOpt string should be `%s`, not `%s`", address, stringAddress)
 		}
 	}
 }
 
 func TestNewIpOptInvalidDefaultVal(t *testing.T) {
 	ip := net.IPv4(127, 0, 0, 1)
 	defaultVal := "Not an ip"
 

 	ipOpt := NewIPOpt(&ip, defaultVal)

 
 	expected := "127.0.0.1"
 	if ipOpt.String() != expected {
 		t.Fatalf("Expected [%v], got [%v]", expected, ipOpt.String())
 	}
 }
 
 func TestNewIpOptValidDefaultVal(t *testing.T) {
 	ip := net.IPv4(127, 0, 0, 1)
 	defaultVal := "192.168.1.1"
 

 	ipOpt := NewIPOpt(&ip, defaultVal)

 
 	expected := "192.168.1.1"
 	if ipOpt.String() != expected {
 		t.Fatalf("Expected [%v], got [%v]", expected, ipOpt.String())
 	}
 }
 
 func TestIpOptSetInvalidVal(t *testing.T) {
 	ip := net.IPv4(127, 0, 0, 1)

 	ipOpt := &IPOpt{IP: &ip}

 	invalidIP := "invalid ip"

 	expectedError := "invalid ip is not an ip address"

 	err := ipOpt.Set(invalidIP)

 	if err == nil || err.Error() != expectedError {
 		t.Fatalf("Expected an Error with [%v], got [%v]", expectedError, err.Error())
 	}
 }