package ipaddr import ( "fmt" "testing" ) func TestIsIPv6(t *testing.T) { tests := []struct { ip string ipv6 bool }{ // IPv4 private addresses {"10.0.0.1", false}, // private network address {"100.64.0.1", false}, // shared address space {"172.16.0.1", false}, // private network address {"192.168.0.1", false}, // private network address {"192.0.0.1", false}, // IANA address {"192.0.2.1", false}, // documentation address {"127.0.0.1", false}, // loopback address {"169.254.0.1", false}, // link local address // IPv4 public addresses {"1.2.3.4", false}, // IPv6 private addresses {"::1", true}, // loopback address {"fe80::1", true}, // link local address {"fc00::1", true}, // unique local address {"fec0::1", true}, // site local address {"2001:db8::1", true}, // documentation address // IPv6 public addresses {"2004:db6::1", true}, // hostname {"example.com", false}, {"localhost", false}, {"1.257.0.1", false}, } for _, tt := range tests { t.Run(tt.ip, func(t *testing.T) { port := 1234 formated := FormatAddressPort(tt.ip, port) if tt.ipv6 { if fmt.Sprintf("[%s]:%d", tt.ip, port) != formated { t.Fatalf("Wrong format %s for %s", formated, tt.ip) } } else { if fmt.Sprintf("%s:%d", tt.ip, port) != formated { t.Fatalf("Wrong format %s for %s", formated, tt.ip) } } }) } }