123 lines
3.2 KiB
C#
123 lines
3.2 KiB
C#
// ObjectTest.cs - NUnit Test Cases for the System.Object struct
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//
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// David Brandt (bucky@keystreams.com)
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//
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// (C) Ximian, Inc. http://www.ximian.com
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//
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using NUnit.Framework;
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using System;
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using System.Globalization;
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namespace MonoTests.System
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{
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[TestFixture]
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public class ObjectTest
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{
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public ObjectTest() {}
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[Test]
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public void TestCtor() {
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Object o = new Object();
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Assert.IsNotNull(o, "Can I at least get an _Object_, please?");
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}
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[Test]
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public void TestEquals1() {
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{
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Object x = new Object();
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Object y = new Object();
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Assert.IsTrue(x.Equals(x), "Object should equal itself");
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Assert.IsTrue(!x.Equals(null), "object should not equal null");
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Assert.IsTrue(!x.Equals(y), "Different objects should not equal 1");
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Assert.IsTrue(!y.Equals(x), "Different objects should not equal 2");
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}
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{
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double x = Double.NaN;
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double y = Double.NaN;
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Assert.IsTrue(((Object)x).Equals(y), "NaNs should always equal each other");
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}
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}
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[Test]
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public void TestEquals2() {
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{
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Object x = new Object();
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Object y = new Object();
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Assert.IsTrue(Object.Equals(x,x), "Object should equal itself");
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Assert.IsTrue(!Object.Equals(x,null), "object should not equal null");
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Assert.IsTrue(!Object.Equals(null,x), "null should not equal object");
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Assert.IsTrue(!Object.Equals(x,y), "Different objects should not equal 1");
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Assert.IsTrue(!Object.Equals(y,x), "Different objects should not equal 2");
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Assert.IsTrue(Object.Equals(null,null), "null should equal null");
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}
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{
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double x = Double.NaN;
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double y = Double.NaN;
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Assert.IsTrue(Object.Equals(x,y), "NaNs should always equal each other");
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}
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}
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[Test]
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public void TestGetHashCode() {
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Object x = new Object();
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Assert.AreEqual(x.GetHashCode(), x.GetHashCode(), "Object's hash code should not change");
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}
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[Test]
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public void TestGetType() {
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Object x = new Object();
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Assert.IsNotNull(x.GetType(), "Should get a type for Object");
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Assert.AreEqual(x.GetType().ToString(), "System.Object", "Bad name for Object type");
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}
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[Test]
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public void TestReferenceEquals() {
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Object x = new Object();
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Object y = new Object();
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Assert.IsTrue(Object.ReferenceEquals(x,x), "Object should equal itself");
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Assert.IsTrue(!Object.ReferenceEquals(x,null), "object should not equal null");
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Assert.IsTrue(!Object.ReferenceEquals(null,x), "null should not equal object");
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Assert.IsTrue(!Object.ReferenceEquals(x,y), "Different objects should not equal 1");
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Assert.IsTrue(!Object.ReferenceEquals(y,x), "Different objects should not equal 2");
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Assert.IsTrue(Object.ReferenceEquals(null,null), "null should not equal null");
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}
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[Test]
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public void TestToString() {
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Object x = new Object();
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Object y = new Object();
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Assert.AreEqual(x.ToString(), y.ToString(), "All Objects should have same string rep");
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}
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class Foo<T> {}
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[Test]
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public void TestToStringOnGenericInstances ()
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{
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Foo<Object> foo = new Foo<Object> ();
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Assert.AreEqual ("MonoTests.System.ObjectTest+Foo`1[System.Object]", foo.ToString (), "Bad ToString of generic instance");
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}
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}
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}
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