mcs/class/System/Test/System.ComponentModel/EventHandlerListTests.cs

   1 //
   2 // System.ComponentModel.EventHandlerList test cases
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //      Martin Willemoes Hansen (mwh@sysrq.dk)
   7 //
   8 // (c) 2002 Ximian, Inc. (http://www.ximian.com)
   9 // (c) 2003 Martin Willemoes Hansen
  10 //
  11
  12 #define NUNIT // Comment out this one if you wanna play with the test without using NUnit
  13
  14 #if NUNIT
  15 using NUnit.Framework;
  16 #else
  17 using System.Reflection;
  18 #endif
  19
  20 using System;
  21 using System.ComponentModel;
  22
  23 namespace MonoTests.System.ComponentModel
  24 {
  25 #if NUNIT
  26         [TestFixture]
  27         public class EventHandlerListTests
  28         {
  29 #else
  30         public class EventHandlerListTests
  31         {
  32 #endif
  33 #if NUNIT
  34                 [SetUp]
  35                 public void GetReady ()
  36                 {
  37 #else
  38                 static EventHandlerListTests ()
  39                 {
  40 #endif
  41                 }
  42
  43                 int calls = 0;
  44
  45                 void Deleg1 (object o, EventArgs e)
  46                 {
  47                         calls++;
  48                 }
  49
  50                 void Deleg2 (object o, EventArgs e)
  51                 {
  52                         calls <<= 1;
  53                 }
  54
  55                 [Test]
  56                 public void All ()
  57                 {
  58                         EventHandlerList list = new EventHandlerList ();
  59                         string i1 = "i1";
  60                         string i2 = "i2";
  61                         EventHandler one = new EventHandler (Deleg1);
  62                         EventHandler two = new EventHandler (Deleg2);
  63                         EventHandler d;
  64
  65                         Assertion.AssertEquals ("All #01", null, list [i1]);
  66                         Assertion.AssertEquals ("All #02", null, list [i2]);
  67
  68                         list.AddHandler (i1, one);
  69                         d = list [i1] as EventHandler;
  70                         Assertion.Assert ("All #03", d != null);
  71
  72                         d (this, EventArgs.Empty);
  73                         Assertion.AssertEquals ("All #04", 1, calls);
  74
  75                         list.AddHandler (i2, two);
  76                         d = list [i1] as EventHandler;
  77                         Assertion.Assert ("All #05", d != null);
  78
  79                         d (this, EventArgs.Empty);
  80                         Assertion.AssertEquals ("All #06", 2, calls);
  81
  82                         d = list [i2] as EventHandler;
  83                         Assertion.Assert ("All #07", d != null);
  84
  85                         d (this, EventArgs.Empty);
  86                         Assertion.AssertEquals ("All #08", 4, calls);
  87
  88                         list.AddHandler (i2, two);
  89                         d = list [i2] as EventHandler;
  90                         Assertion.Assert ("All #08", d != null);
  91
  92                         d (this, EventArgs.Empty);
  93                         Assertion.AssertEquals ("All #09", 16, calls);
  94
  95                         list.RemoveHandler (i1, one);
  96                         d = list [i1] as EventHandler;
  97                         Assertion.Assert ("All #10", d == null);
  98
  99                         list.RemoveHandler (i2, two);
 100                         d = list [i2] as EventHandler;
 101                         Assertion.Assert ("All #11", d != null);
 102
 103                         list.RemoveHandler (i2, two);
 104                         d = list [i2] as EventHandler;
 105                         Assertion.Assert ("All #12", d == null);
 106
 107                         list.AddHandler (i1, one);
 108                         d = list [i1] as EventHandler;
 109                         Assertion.Assert ("All #13", d != null);
 110
 111                         list.AddHandler (i2, two);
 112                         d = list [i2] as EventHandler;
 113                         Assertion.Assert ("All #14", d != null);
 114
 115                         list.AddHandler (i1, null);
 116                         Assertion.Assert ("All #15", list [i1] != null);
 117
 118                         list.AddHandler (i2, null);
 119                         Assertion.Assert ("All #16", list [i2] != null);
 120
 121                         list.Dispose ();
 122                 }
 123
 124                 [Test]
 125                 public void NullKey ()
 126                 {
 127                         EventHandlerList list = new EventHandlerList ();
 128                         EventHandler one = new EventHandler (Deleg1);
 129
 130                         list.AddHandler (null, one);
 131                         EventHandler d = list [null] as EventHandler;
 132                         Assertion.Assert ("NullKey #01", d != null);
 133
 134                         list.RemoveHandler (null, one);
 135                         d = list [null] as EventHandler;
 136                         Assertion.Assert ("NullKey #02", d == null);
 137                 }
 138
 139 #if !NUNIT
 140                 void Assert (string msg, bool result)
 141                 {
 142                         if (!result)
 143                                 Console.WriteLine (msg);
 144                 }
 145
 146                 void AssertEquals (string msg, object expected, object real)
 147                 {
 148                         if (expected == null && real == null)
 149                                 return;
 150
 151                         if (expected != null && expected.Equals (real))
 152                                 return;
 153
 154                         Console.WriteLine ("{0}: expected: '{1}', got: '{2}'", msg, expected, real);
 155                 }
 156
 157                 void Fail (string msg)
 158                 {
 159                         Console.WriteLine ("Failed: {0}", msg);
 160                 }
 161
 162                 static void Main ()
 163                 {
 164                         EventHandlerListTests p = new EventHandlerListTests ();
 165                         Type t = p.GetType ();
 166                         MethodInfo [] methods = t.GetMethods ();
 167                         foreach (MethodInfo m in methods) {
 168                                 if (m.Name.Substring (0, 4) == "Test") {
 169                                         m.Invoke (p, null);
 170                                 }
 171                         }
 172                 }
 173 #endif
 174         }
 175 }
 176