mcs/class/corlib/Test/System/ObjectTest.cs

   1 // ObjectTest.cs - NUnit Test Cases for the System.Object struct\r
   2 //\r
   3 // David Brandt (bucky@keystreams.com)\r
   4 //\r
   5 // (C) Ximian, Inc.  http://www.ximian.com\r
   6 // \r
   7 \r
   8 using NUnit.Framework;\r
   9 using System;\r
  10 using System.Globalization;\r
  11 \r
  12 namespace MonoTests.System\r
  13 {\r
  14 \r
  15 public class ObjectTest : TestCase\r
  16 {\r
  17         public ObjectTest() {}\r
  18 \r
  19         protected override void SetUp() \r
  20         {\r
  21         }\r
  22 \r
  23         protected override void TearDown() \r
  24         {\r
  25         }\r
  26 \r
  27         public void TestCtor() {\r
  28                 Object o = new Object();\r
  29                 AssertNotNull("Can I at least get an _Object_, please?", o);\r
  30         }\r
  31 \r
  32         public void TestEquals1() {\r
  33                 {\r
  34                         Object x = new Object();\r
  35                         Object y = new Object();\r
  36                         Assert("Object should equal itself",\r
  37                                x.Equals(x));\r
  38                         Assert("object should not equal null",\r
  39                                !x.Equals(null));\r
  40                         Assert("Different objects should not equal 1",\r
  41                                !x.Equals(y));\r
  42                         Assert("Different objects should not equal 2",\r
  43                                !y.Equals(x));\r
  44                 }\r
  45                 {\r
  46                         double x = Double.NaN;\r
  47                         double y = Double.NaN;\r
  48                         Assert("NaNs should always equal each other",\r
  49                                ((Object)x).Equals(y));\r
  50                 }\r
  51         }\r
  52         public void TestEquals2() {\r
  53                 {\r
  54                         Object x = new Object();\r
  55                         Object y = new Object();\r
  56                         Assert("Object should equal itself",\r
  57                                Object.Equals(x,x));\r
  58                         Assert("object should not equal null",\r
  59                                !Object.Equals(x,null));\r
  60                         Assert("null should not equal object",\r
  61                                !Object.Equals(null,x));\r
  62                         Assert("Different objects should not equal 1",\r
  63                                !Object.Equals(x,y));\r
  64                         Assert("Different objects should not equal 2",\r
  65                                !Object.Equals(y,x));\r
  66                         Assert("null should not equal null",\r
  67                                Object.Equals(null,null));\r
  68                 }\r
  69                 {\r
  70                         double x = Double.NaN;\r
  71                         double y = Double.NaN;\r
  72                         Assert("NaNs should always equal each other",\r
  73                                Object.Equals(x,y));\r
  74                 }\r
  75         }\r
  76 \r
  77         public void TestGetHashCode() {\r
  78                 Object x = new Object();\r
  79                 AssertEquals("Object's hash code should not change",\r
  80                              x.GetHashCode(), x.GetHashCode());\r
  81         }\r
  82 \r
  83         public void TestGetType() {\r
  84                 Object x = new Object();\r
  85                 AssertNotNull("Should get a type for Object", x.GetType());\r
  86                 AssertEquals("Bad name for Object type", "System.Object",\r
  87                              x.GetType().ToString());\r
  88         }\r
  89 \r
  90         public void TestReferenceEquals() {\r
  91                 Object x = new Object();\r
  92                 Object y = new Object();\r
  93                 Assert("Object should equal itself",\r
  94                        Object.ReferenceEquals(x,x));\r
  95                 Assert("object should not equal null",\r
  96                        !Object.ReferenceEquals(x,null));\r
  97                 Assert("null should not equal object",\r
  98                        !Object.ReferenceEquals(null,x));\r
  99                 Assert("Different objects should not equal 1",\r
 100                        !Object.ReferenceEquals(x,y));\r
 101                 Assert("Different objects should not equal 2",\r
 102                        !Object.ReferenceEquals(y,x));\r
 103                 Assert("null should not equal null",\r
 104                        Object.ReferenceEquals(null,null));\r
 105         }\r
 106 \r
 107         public void TestToString() {\r
 108                 Object x = new Object();\r
 109                 Object y = new Object();\r
 110                 AssertEquals("All Objects should have same string rep",\r
 111                              x.ToString(), y.ToString());\r
 112         }\r
 113 }\r
 114 }\r