// Copyright (c) HashiCorp, Inc. // SPDX-License-Identifier: MPL-2.0 package ipaddr import ( "net" "testing" ) func TestIsPrivateIP(t *testing.T) { tests := []struct { ip string private bool }{ // IPv4 private addresses {"10.0.0.1", true}, // private network address {"100.64.0.1", true}, // shared address space {"172.16.0.1", true}, // private network address {"192.168.0.1", true}, // private network address {"192.0.0.1", true}, // IANA address {"192.0.2.1", true}, // documentation address {"127.0.0.1", true}, // loopback address {"169.254.0.1", true}, // 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", false}, } for _, tt := range tests { t.Run(tt.ip, func(t *testing.T) { ip := net.ParseIP(tt.ip) if ip == nil { t.Fatalf("%s is not a valid ip address", tt.ip) } if got, want := isPrivate(ip), tt.private; got != want { t.Fatalf("got %v for %v want %v", got, ip, want) } }) } }