Unit testing is a critical part of software development. It allows developers to identify and fix problems early, before they cause system failures. Unit testing can also help you avoid regressions, which can lead to expensive and time-consuming repairs. In this article, we will discuss how to perform unit testing for Delete in C#. We will first cover the basics of unit testing in C#, including the use of the Assert keyword and the mocking library. We will then discuss how to test deletes in a context-sensitive manner, using the Delete method from the System.IO namespace. The Basics of Unit Testing in C# Unit testing is a critical part of software development because it allows developers to identify and fix problems early, before they cause system failures. Unit testing can also help you avoid regressions, which can lead to expensive and time-consuming repairs. In order to perform unit testing for deletes in C#, you first need to understand the basics of unittesting in C#. This article covers the basics of unittesting in C#: The use of assertions: assertions are statements that assert that a particular condition exists (or does not exist) within a particular context or sequence of code blocks. Assertions are used throughout your code to ensure that your code is working as expected; they are not just used for debugging purposes! The Assert keyword is available on both sides of an assertion: on your side (the code being tested) and on your target (the object or class being tested). The Assert keyword takes two arguments: an assertion target and an assertion condition . The condition must be met by the target object or class when it is called; if it isn’t met, then an error is returned by the Assert keyword. For example: public void TestDelete(object obj) { //assert obj == null } public void TestDelete(object obj) { //assert obj != null } public void
