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// 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.

package net

import (

        "testing"

)

type testCase struct {

        name   string

        result bool

}

var tests = []testCase{

        // RFC2181, section 11.

        {"_xmpp-server._tcp.google.com", true},

        {"_xmpp-server._tcp.google.com", true},

        {"foo.com", true},

        {"1foo.com", true},

        {"26.0.0.73.com", true},

        {"fo-o.com", true},

        {"fo1o.com", true},

        {"foo1.com", true},

        {"a.b..com", false},

}

func getTestCases(ch chan<- testCase) {

        defer close(ch)

        var char59 = ""

        var char63 = ""

        var char64 = ""

        for i := 0; i < 59; i++ {

                char59 += "a"

        }

        char63 = char59 + "aaaa"

        char64 = char63 + "a"

        for _, tc := range tests {

                ch <- tc

        }

        ch <- testCase{char63 + ".com", true}

        ch <- testCase{char64 + ".com", false}

        // 255 char name is fine:

        ch <- testCase{char59 + "." + char63 + "." + char63 + "." +

                char63 + ".com",

                true}

        // 256 char name is bad:

        ch <- testCase{char59 + "a." + char63 + "." + char63 + "." +

                char63 + ".com",

                false}

}

func TestDNSNames(t *testing.T) {

        ch := make(chan testCase)

        go getTestCases(ch)

        for tc := range ch {

                if isDomainName(tc.name) != tc.result {

                        t.Errorf("isDomainName(%v) failed: Should be %v",

                                tc.name, tc.result)

                }

        }

}