86 lines
2 KiB
Go
86 lines
2 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build !js
|
|
|
|
package net
|
|
|
|
import (
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
type dnsNameTest struct {
|
|
name string
|
|
result bool
|
|
}
|
|
|
|
var dnsNameTests = []dnsNameTest{
|
|
// RFC 2181, section 11.
|
|
{"_xmpp-server._tcp.google.com", true},
|
|
{"foo.com", true},
|
|
{"1foo.com", true},
|
|
{"26.0.0.73.com", true},
|
|
{"10-0-0-1", true},
|
|
{"fo-o.com", true},
|
|
{"fo1o.com", true},
|
|
{"foo1.com", true},
|
|
{"a.b..com", false},
|
|
{"a.b-.com", false},
|
|
{"a.b.com-", false},
|
|
{"a.b..", false},
|
|
{"b.com.", true},
|
|
}
|
|
|
|
func emitDNSNameTest(ch chan<- dnsNameTest) {
|
|
defer close(ch)
|
|
var char63 = ""
|
|
for i := 0; i < 63; i++ {
|
|
char63 += "a"
|
|
}
|
|
char64 := char63 + "a"
|
|
longDomain := strings.Repeat(char63+".", 5) + "example"
|
|
|
|
for _, tc := range dnsNameTests {
|
|
ch <- tc
|
|
}
|
|
|
|
ch <- dnsNameTest{char63 + ".com", true}
|
|
ch <- dnsNameTest{char64 + ".com", false}
|
|
|
|
// Remember: wire format is two octets longer than presentation
|
|
// (length octets for the first and [root] last labels).
|
|
// 253 is fine:
|
|
ch <- dnsNameTest{longDomain[len(longDomain)-253:], true}
|
|
// A terminal dot doesn't contribute to length:
|
|
ch <- dnsNameTest{longDomain[len(longDomain)-253:] + ".", true}
|
|
// 254 is bad:
|
|
ch <- dnsNameTest{longDomain[len(longDomain)-254:], false}
|
|
}
|
|
|
|
func TestDNSName(t *testing.T) {
|
|
ch := make(chan dnsNameTest)
|
|
go emitDNSNameTest(ch)
|
|
for tc := range ch {
|
|
if isDomainName(tc.name) != tc.result {
|
|
t.Errorf("isDomainName(%q) = %v; want %v", tc.name, !tc.result, tc.result)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkDNSName(b *testing.B) {
|
|
testHookUninstaller.Do(uninstallTestHooks)
|
|
|
|
benchmarks := append(dnsNameTests, []dnsNameTest{
|
|
{strings.Repeat("a", 63), true},
|
|
{strings.Repeat("a", 64), false},
|
|
}...)
|
|
for n := 0; n < b.N; n++ {
|
|
for _, tc := range benchmarks {
|
|
if isDomainName(tc.name) != tc.result {
|
|
b.Errorf("isDomainName(%q) = %v; want %v", tc.name, !tc.result, tc.result)
|
|
}
|
|
}
|
|
}
|
|
}
|