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Source file src/net/interface_windows_test.go

Documentation: net

  // Copyright 2015 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 (
  	"bytes"
  	"internal/syscall/windows"
  	"sort"
  	"testing"
  )
  
  func TestWindowsInterfaces(t *testing.T) {
  	aas, err := adapterAddresses()
  	if err != nil {
  		t.Fatal(err)
  	}
  	ift, err := Interfaces()
  	if err != nil {
  		t.Fatal(err)
  	}
  	for i, ifi := range ift {
  		aa := aas[i]
  		if len(ifi.HardwareAddr) != int(aa.PhysicalAddressLength) {
  			t.Errorf("got %d; want %d", len(ifi.HardwareAddr), aa.PhysicalAddressLength)
  		}
  		if ifi.MTU > 0x7fffffff {
  			t.Errorf("%s: got %d; want less than or equal to 1<<31 - 1", ifi.Name, ifi.MTU)
  		}
  		if ifi.Flags&FlagUp != 0 && aa.OperStatus != windows.IfOperStatusUp {
  			t.Errorf("%s: got %v; should not include FlagUp", ifi.Name, ifi.Flags)
  		}
  		if ifi.Flags&FlagLoopback != 0 && aa.IfType != windows.IF_TYPE_SOFTWARE_LOOPBACK {
  			t.Errorf("%s: got %v; should not include FlagLoopback", ifi.Name, ifi.Flags)
  		}
  		if _, _, err := addrPrefixTable(aa); err != nil {
  			t.Errorf("%s: %v", ifi.Name, err)
  		}
  	}
  }
  
  type byAddrLen []IPNet
  
  func (ps byAddrLen) Len() int { return len(ps) }
  
  func (ps byAddrLen) Less(i, j int) bool {
  	if n := bytes.Compare(ps[i].IP, ps[j].IP); n != 0 {
  		return n < 0
  	}
  	if n := bytes.Compare(ps[i].Mask, ps[j].Mask); n != 0 {
  		return n < 0
  	}
  	return false
  }
  
  func (ps byAddrLen) Swap(i, j int) { ps[i], ps[j] = ps[j], ps[i] }
  
  var windowsAddrPrefixLenTests = []struct {
  	pfxs []IPNet
  	ip   IP
  	out  int
  }{
  	{
  		[]IPNet{
  			{IP: IPv4(172, 16, 0, 0), Mask: IPv4Mask(255, 255, 0, 0)},
  			{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)},
  			{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(255, 255, 255, 128)},
  			{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(255, 255, 255, 192)},
  		},
  		IPv4(192, 168, 0, 1),
  		26,
  	},
  	{
  		[]IPNet{
  			{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0"))},
  			{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8"))},
  			{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc"))},
  		},
  		ParseIP("2001:db8::1"),
  		126,
  	},
  
  	// Fallback cases. It may happen on Windows XP or 2003 server.
  	{
  		[]IPNet{
  			{IP: IPv4(127, 0, 0, 0).To4(), Mask: IPv4Mask(255, 0, 0, 0)},
  			{IP: IPv4(10, 0, 0, 0).To4(), Mask: IPv4Mask(255, 0, 0, 0)},
  			{IP: IPv4(172, 16, 0, 0).To4(), Mask: IPv4Mask(255, 255, 0, 0)},
  			{IP: IPv4(192, 168, 255, 0), Mask: IPv4Mask(255, 255, 255, 0)},
  			{IP: IPv4zero, Mask: IPv4Mask(0, 0, 0, 0)},
  		},
  		IPv4(192, 168, 0, 1),
  		8 * IPv4len,
  	},
  	{
  		nil,
  		IPv4(192, 168, 0, 1),
  		8 * IPv4len,
  	},
  	{
  		[]IPNet{
  			{IP: IPv6loopback, Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"))},
  			{IP: ParseIP("2001:db8:1::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0"))},
  			{IP: ParseIP("2001:db8:2::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8"))},
  			{IP: ParseIP("2001:db8:3::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc"))},
  			{IP: IPv6unspecified, Mask: IPMask(ParseIP("::"))},
  		},
  		ParseIP("2001:db8::1"),
  		8 * IPv6len,
  	},
  	{
  		nil,
  		ParseIP("2001:db8::1"),
  		8 * IPv6len,
  	},
  }
  
  func TestWindowsAddrPrefixLen(t *testing.T) {
  	for i, tt := range windowsAddrPrefixLenTests {
  		sort.Sort(byAddrLen(tt.pfxs))
  		l := addrPrefixLen(tt.pfxs, tt.ip)
  		if l != tt.out {
  			t.Errorf("#%d: got %d; want %d", i, l, tt.out)
  		}
  		sort.Sort(sort.Reverse(byAddrLen(tt.pfxs)))
  		l = addrPrefixLen(tt.pfxs, tt.ip)
  		if l != tt.out {
  			t.Errorf("#%d: got %d; want %d", i, l, tt.out)
  		}
  	}
  }
  

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