JustMock

JustMock is a unit testing tool developed by Telerik, now part of Progress. It is designed to assist .NET developers in creating and running unit tests, particularly by facilitating the mocking of dependencies. Mocking is a technique used in unit testing where a test object replaces a real object that the code under test interacts with. This allows developers to isolate the code being tested and control its interactions with external systems or components.

The primary function of JustMock is to create mock objects that simulate the behavior of real objects. This enables testers to set up specific return values for method calls, verify that certain methods were called with expected arguments, and handle exceptions. JustMock supports various mocking scenarios, including mocking interfaces, abstract classes, concrete classes, and static members. It also offers features for arranging (setting up expectations), acting (executing the code under test), and asserting (verifying outcomes).

JustMock integrates with popular .NET unit testing frameworks such as MSTest, NUnit, and xUnit.net, allowing developers to incorporate its mocking capabilities into their existing test projects. The tool aims to simplify the process of dependency injection and test isolation, which are crucial for writing robust and maintainable unit tests. By providing a flexible and powerful mocking framework, JustMock helps developers improve the quality and reliability of their software.