Menu
I would like to know what is the best way to write custom extensions methods for Microsoft Visual Studio Unit Testing Assert class.
718
To define an extension method, first of all, define a static class. For example, we have created an IntExtensions class under the ExtensionMethods namespace in the following example. The IntExtensions class will contain all the extension methods applicable to int data type.
To define and call the extension methodDefine a static class to contain the extension method. The class must be visible to client code. For more information about accessibility rules, see Access Modifiers. Implement the extension method as a static method with at least the same visibility as the containing class.
In C#, the extension method concept allows you to add new methods in the existing class or in the structure without modifying the source code of the original type and you do not require any kind of special permission from the original type and there is no need to re-compile the original type.
Extension methods enable you to "add" methods to existing types without creating a new derived type, recompiling, or otherwise modifying the original type. Extension methods are static methods, but they're called as if they were instance methods on the extended type.
If you are referring to this Assert class, then you cannot add extension methods. Extension methods can only be applied to object instances. Since this class is static, it can never be instantiated.
You could add your own custom Assert type class like so though:
public static class MyAssert {
public static void AreEqual(object expected, object actual) {
// TODO: throw if not equal
}
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
