NUnit的CollectionAssert对于类似的自定义类列表返回false [英] NUnit's CollectionAssert return false for similar lists of custom class

问题描述

这是我的课程:

public class MyClass
{
    public string Name { get; set; }
    public string FaminlyName { get; set; }
    public int Phone { get; set; }
}

然后我有两个类似的列表:

Then I have two similar list:

List<MyClass> list1 = new List<MyClass>()
{
    new MyClass() {FaminlyName = "Smith", Name = "Arya", Phone = 0123},
    new MyClass() {FaminlyName = "Jahani", Name = "Shad", Phone = 0123}
};
List<MyClass> list2 = new List<MyClass>()
{
    new MyClass() {FaminlyName = "Smith", Name = "Arya", Phone = 0123},
    new MyClass() {FaminlyName = "Jahani", Name = "Shad", Phone = 0123}
};

问题是NUnit CollectionAssert总是返回false.

The problem is that NUnit CollectionAssert return false always.

CollectionAssert.AreEqual(list1,list2);

我是否缺少有关CollectionAssert测试的一些信息

Am I missing something about CollectionAssert test

推荐答案

AreEqual 检查对象的相等性.由于您没有覆盖 Equals 方法，因此如果引用不相等，它将返回 false .

The AreEqual checks for equality of the objects. Since you did not override the Equals method, it will return false in case the references are not equal.

您可以通过覆盖 MyClass 的 Equals 方法来解决此问题:

You can solve this by overriding the Equals method of your MyClass:

public class MyClass {
    public string Name { get; set; }
    public string FaminlyName { get; set; }
    public int Phone { get; set; }

    public override bool Equals (object obj) {
         MyClass mobj = obj as MyClass;
         return mobj != null && Object.Equals(this.Name,mobj.Name) && Object.Equals(this.FaminlyName,mobj.FaminlyName) && Object.Equals(this.Phone,mobj.Phone);
    }

}

您还更好地重写了 GetHashCode 方法:

You furthermore better override the GetHashCode method as well:

public class MyClass {
    public string Name { get; set; }
    public string FaminlyName { get; set; }
    public int Phone { get; set; }

    public override bool Equals (object obj) {
         MyClass mobj = obj as MyClass;
         return mobj != null && Object.Equals(this.Name,mobj.Name) && Object.Equals(this.FaminlyName,mobj.FaminlyName) && Object.Equals(this.Phone,mobj.Phone);
    }

    public override int GetHashCode () {
        int hc = 0x00;
        hc ^= (this.Name != null) ? this.Name.GetHashCode() : 0;
        hc ^= (this.FaminlyName != null) ? this.FaminlyName.GetHashCode() : 0;
        hc ^= this.Phone.GetHashCode();
        return hc;
    }

}

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