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Should you unit test internal methods?
Unit Tests Should Only Test Public Methods The short answer is that you shouldn’t test private methods directly, but only their effects on the public methods that call them. Unit tests are clients of the object under test, much like the other classes in the code that are dependent on the object.
Which attribute to use to make internal class available for testing?
NET, the InternalsVisibleTo assembly attribute allows you to create “friend” assemblies. These are specific strongly named assemblies that are allowed to access internal classes and members of the other assembly.
What is the use of internal class?
The internal keyword is an access modifier for types and type members. We can declare a class as internal or its member as internal. Internal members are accessible only within files in the same assembly (. dll).
How to unit test internal classes in.net core?
From the moment when you reference your assembly in a project in Visual Studio, you will have access to all your classes, methods, properties and fields marked as public, and there are surely parts of your code that it is not worth better not leave accessible because they could change the behavior of the assembly or have any negative impact.
How to test your internal code in Assembly?
To test your internal code this behaviour is exactly what you want. If this is too much, you can add this attribute in a specific class and only allow access to the internal methods of this class. As soon as you recompile your assembly, the code in your test assembly can access your internal methods:
How to hide the internal things of a class?
One of the most important concepts of object-oriented design is encapsulation. You try to hide all the internal things of a class from the other developers and only offer them a subset of functionality to use. You can achieve this by setting an appropriate access modifier for your methods and classes:
Why are unit tests important in a project?
The creation of unit tests is an important step in ensuring the quality of a project. In general, most public methods are tested, but what if you want to test a non-public part of the project?