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// ObjectTest.cs - NUnit Test Cases for the System.Object struct
//
// David Brandt (bucky@keystreams.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
using NUnit.Framework;
using System;
using System.Globalization;
namespace MonoTests.System
{
public class ObjectTest : TestCase
{
public ObjectTest() {}
protected override void SetUp()
{
}
protected override void TearDown()
{
}
public void TestCtor() {
Object o = new Object();
AssertNotNull("Can I at least get an _Object_, please?", o);
}
public void TestEquals1() {
{
Object x = new Object();
Object y = new Object();
Assert("Object should equal itself",
x.Equals(x));
Assert("object should not equal null",
!x.Equals(null));
Assert("Different objects should not equal 1",
!x.Equals(y));
Assert("Different objects should not equal 2",
!y.Equals(x));
}
{
double x = Double.NaN;
double y = Double.NaN;
Assert("NaNs should always equal each other",
((Object)x).Equals(y));
}
}
public void TestEquals2() {
{
Object x = new Object();
Object y = new Object();
Assert("Object should equal itself",
Object.Equals(x,x));
Assert("object should not equal null",
!Object.Equals(x,null));
Assert("null should not equal object",
!Object.Equals(null,x));
Assert("Different objects should not equal 1",
!Object.Equals(x,y));
Assert("Different objects should not equal 2",
!Object.Equals(y,x));
Assert("null should not equal null",
Object.Equals(null,null));
}
{
double x = Double.NaN;
double y = Double.NaN;
Assert("NaNs should always equal each other",
Object.Equals(x,y));
}
}
public void TestGetHashCode() {
Object x = new Object();
AssertEquals("Object's hash code should not change",
x.GetHashCode(), x.GetHashCode());
}
public void TestGetType() {
Object x = new Object();
AssertNotNull("Should get a type for Object", x.GetType());
AssertEquals("Bad name for Object type", "System.Object",
x.GetType().ToString());
}
public void TestReferenceEquals() {
Object x = new Object();
Object y = new Object();
Assert("Object should equal itself",
Object.ReferenceEquals(x,x));
Assert("object should not equal null",
!Object.ReferenceEquals(x,null));
Assert("null should not equal object",
!Object.ReferenceEquals(null,x));
Assert("Different objects should not equal 1",
!Object.ReferenceEquals(x,y));
Assert("Different objects should not equal 2",
!Object.ReferenceEquals(y,x));
Assert("null should not equal null",
Object.ReferenceEquals(null,null));
}
public void TestToString() {
Object x = new Object();
Object y = new Object();
AssertEquals("All Objects should have same string rep",
x.ToString(), y.ToString());
}
}
}
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