package netutil

import "testing"

func TestIsLocalOrPrivateHost(t *testing.T) {
	tests := []struct {
		name string
		host string
		want bool
	}{
		{name: "localhost", host: "localhost", want: true},
		{name: "localhost subdomain", host: "assets.localhost", want: true},
		{name: "docker host", host: "host.docker.internal", want: true},
		{name: "loopback ipv4", host: "127.0.0.1", want: true},
		{name: "loopback ipv6", host: "::1", want: true},
		{name: "private 10", host: "10.0.0.5", want: true},
		{name: "private 172", host: "172.16.2.3", want: true},
		{name: "private 192", host: "192.168.1.10", want: true},
		{name: "link local", host: "169.254.10.20", want: true},
		{name: "cgnat", host: "100.64.10.20", want: true},
		{name: "unspecified", host: "0.0.0.0", want: true},
		{name: "public ip", host: "8.8.8.8", want: false},
		{name: "public hostname", host: "example.com", want: false},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := IsLocalOrPrivateHost(tt.host); got != tt.want {
				t.Fatalf("IsLocalOrPrivateHost(%q) = %t, want %t", tt.host, got, tt.want)
			}
		})
	}
}