libgo/go/net/dnsname_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package net
   6
   7 import (
   8         "testing"
   9 )
  10
  11 type testCase struct {
  12         name   string
  13         result bool
  14 }
  15
  16 var tests = []testCase{
  17         // RFC2181, section 11.
  18         {"_xmpp-server._tcp.google.com", true},
  19         {"_xmpp-server._tcp.google.com", true},
  20         {"foo.com", true},
  21         {"1foo.com", true},
  22         {"26.0.0.73.com", true},
  23         {"fo-o.com", true},
  24         {"fo1o.com", true},
  25         {"foo1.com", true},
  26         {"a.b..com", false},
  27 }
  28
  29 func getTestCases(ch chan<- testCase) {
  30         defer close(ch)
  31         var char59 = ""
  32         var char63 = ""
  33         var char64 = ""
  34         for i := 0; i < 59; i++ {
  35                 char59 += "a"
  36         }
  37         char63 = char59 + "aaaa"
  38         char64 = char63 + "a"
  39
  40         for _, tc := range tests {
  41                 ch <- tc
  42         }
  43
  44         ch <- testCase{char63 + ".com", true}
  45         ch <- testCase{char64 + ".com", false}
  46         // 255 char name is fine:
  47         ch <- testCase{char59 + "." + char63 + "." + char63 + "." +
  48                 char63 + ".com",
  49                 true}
  50         // 256 char name is bad:
  51         ch <- testCase{char59 + "a." + char63 + "." + char63 + "." +
  52                 char63 + ".com",
  53                 false}
  54 }
  55
  56 func TestDNSNames(t *testing.T) {
  57         ch := make(chan testCase)
  58         go getTestCases(ch)
  59         for tc := range ch {
  60                 if isDomainName(tc.name) != tc.result {
  61                         t.Errorf("isDomainName(%v) failed: Should be %v",
  62                                 tc.name, tc.result)
  63                 }
  64         }
  65 }