mcs/class/System/Test/DnsTest.cs

   1 // DnsTest.cs - NUnit Test Cases for the System.Net.Dns class\r
   2 //\r
   3 // Author: Mads Pultz (mpultz@diku.dk)\r
   4 //\r
   5 // (C) Mads Pultz, 2001\r
   6 // \r
   7 // This test assumes the following:\r
   8 // 1) The following Internet sites exist:\r
   9 //        www.go-mono.com with IP address 129.250.184.233\r
  10 //        info.diku.dk with IP address 130.225.96.4\r
  11 // 2) The following DNS name does not exist:\r
  12 //        www.hopefullydoesnotexist.dk\r
  13 //\r
  14 \r
  15 using NUnit.Framework;\r
  16 using System;\r
  17 using System.Net;\r
  18 using System.Net.Sockets;\r
  19 using System.Threading;\r
  20 using System.Collections;\r
  21 \r
  22 namespace Ximian.Mono.Tests.System {\r
  23 \r
  24 public class DnsTest: TestCase {\r
  25         \r
  26         private String site1Name = "www.go-mono.com",\r
  27                 site1Dot = "129.250.184.233",\r
  28                 site2Name = "info.diku.dk",\r
  29                 site2Dot = "130.225.96.4",\r
  30                 noneExistingSite = "www.hopefullydoesnotexist.dk";\r
  31         private uint site1IP = 2180692201, site2IP = 2195808260; // Big-Endian\r
  32         \r
  33         public DnsTest(): base("Ximian.Mono.Tests.System.Net.DnsTest testsuite") { }\r
  34         public DnsTest(String name): base(name) { }\r
  35 \r
  36         public static ITest Suite {\r
  37                 get { return new TestSuite(typeof(DnsTest)); }\r
  38         }\r
  39         \r
  40         private void Callback(IAsyncResult ar) { \r
  41                 IPHostEntry h;\r
  42                 h = Dns.EndGetHostByName(ar);\r
  43                 SubTestValidIPHostEntry(h);\r
  44         }\r
  45 \r
  46         public void TestAsyncGetHostByName(){\r
  47                 IAsyncResult r;\r
  48                 r = Dns.BeginGetHostByName(site1Name, new AsyncCallback(Callback), null);\r
  49         }\r
  50         \r
  51         public void TestAsyncResolve() {\r
  52                 IAsyncResult r;\r
  53                 r = Dns.BeginResolve(site1Name, new AsyncCallback(Callback), null);\r
  54         }\r
  55         \r
  56         public void TestGetHostName() {\r
  57                 string hostName = Dns.GetHostName();\r
  58                 Assert(hostName != null);\r
  59         }\r
  60         \r
  61         private void SubTestGetHostByName(string siteName, string siteDot) {\r
  62                 IPHostEntry h = Dns.GetHostByName(siteName);\r
  63                 SubTestValidIPHostEntry(h);\r
  64                 Assert(h.HostName.Equals(siteName));\r
  65                 Assert(h.AddressList[0].ToString() == siteDot);\r
  66         }\r
  67         \r
  68         public void TestGetHostByName() {\r
  69                 SubTestGetHostByName(site1Name, site1Dot);\r
  70                 SubTestGetHostByName(site2Name, site2Dot);\r
  71                 try {\r
  72                         Dns.GetHostByName(noneExistingSite);\r
  73                         Fail("Should raise a SocketException (assuming that '" + noneExistingSite + "' does not exist)");\r
  74                 } catch (SocketException) {\r
  75                 } \r
  76                 try {\r
  77                         Dns.GetHostByName(null);\r
  78                         Fail("Should raise an ArgumentNullException");\r
  79                 } catch (ArgumentNullException) {\r
  80                 } \r
  81         }\r
  82         \r
  83         private void SubTestGetHostByAddressStringFormatException(string addr) {\r
  84                 try {\r
  85                         Dns.GetHostByAddress(addr);\r
  86                         Fail("Should raise a FormatException");\r
  87                 } catch (FormatException) {\r
  88                 } \r
  89         }\r
  90         \r
  91         private void SubTestGetHostByAddressString(string addr) {\r
  92                 IPHostEntry h = Dns.GetHostByAddress(addr);\r
  93                 SubTestValidIPHostEntry(h);\r
  94         }\r
  95         \r
  96         public void TestGetHostByAddressString() {\r
  97                 try {\r
  98                         String addr = null;\r
  99                         Dns.GetHostByAddress(addr);\r
 100                         Fail("Should raise an ArgumentNullException");\r
 101                 } catch (ArgumentNullException) {\r
 102                 }\r
 103                 SubTestGetHostByAddressStringFormatException("123.255.23");\r
 104                 SubTestGetHostByAddressStringFormatException("123.256.34.10");\r
 105                 SubTestGetHostByAddressStringFormatException("not an IP address");\r
 106                 SubTestGetHostByAddressString(site1Dot);\r
 107                 SubTestGetHostByAddressString(site2Dot);\r
 108         }\r
 109         \r
 110         private void SubTestGetHostByAddressIPAddress(IPAddress addr) {\r
 111                 IPHostEntry h = Dns.GetHostByAddress(addr);\r
 112                 SubTestValidIPHostEntry(h);\r
 113                 Assert(h.AddressList[0].ToString() == addr.ToString());\r
 114         }\r
 115         \r
 116         public void TestGetHostByAddressIPAddress() {\r
 117                 try {\r
 118                         IPAddress addr = null;\r
 119                         Dns.GetHostByAddress(addr);\r
 120                         Fail("Should raise an ArgumentNullException");\r
 121                 } catch (ArgumentNullException) {\r
 122                 }\r
 123                 SubTestGetHostByAddressIPAddress(new IPAddress(IPAddress.NetworkToHostOrder((int)site1IP)));\r
 124                 SubTestGetHostByAddressIPAddress(new IPAddress(IPAddress.NetworkToHostOrder((int)site2IP)));\r
 125         }\r
 126         \r
 127         private void SubTestResolve(string addr) {\r
 128                 IPHostEntry h = Dns.Resolve(addr);\r
 129                 SubTestValidIPHostEntry(h);\r
 130         }\r
 131         \r
 132         public void TestResolve() {\r
 133                 SubTestResolve(site1Name);\r
 134                 SubTestResolve(site2Name);\r
 135                 SubTestResolve(site1Dot);\r
 136                 SubTestResolve(site2Dot);\r
 137         }\r
 138         \r
 139         private void SubTestValidIPHostEntry(IPHostEntry h) {\r
 140                 Assert(h.HostName != null);\r
 141                 Assert(h.AddressList != null);\r
 142                 Assert(h.AddressList.Length > 0);\r
 143         }\r
 144         \r
 145         private static void printIPHostEntry(IPHostEntry h)\r
 146         {\r
 147                 Console.WriteLine("----------------------------------------------------");\r
 148                 Console.WriteLine("Host name:");\r
 149                 Console.WriteLine(h.HostName);\r
 150                 Console.WriteLine("IP addresses:");\r
 151                 IPAddress[] list = h.AddressList;\r
 152                 for(int i = 0; i < list.Length; ++i)\r
 153                         Console.WriteLine(list[i]);\r
 154                 Console.WriteLine("Aliases:");\r
 155                 string[] aliases = h.Aliases;\r
 156                 for(int i = 0; i < aliases.Length; ++i)\r
 157                         Console.WriteLine(aliases[i]);\r
 158                 Console.WriteLine("----------------------------------------------------");\r
 159         }\r
 160 }\r
 161 \r
 162 }\r