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In addition to these testing libraries, TypeScript provides features such as interfaces and classes that can be used to write well-structured and organized code. This structure can make it easier to write unit tests, as it provides a clear and well-defined structure for testing individual units of code.
When writing unit tests for TypeScript code, it is important to keep a few key principles in mind. First, tests should be fast and efficient, so that developers can quickly run and iterate on tests. Second, tests should be isolated, so that changes to one unit of code do not affect other units of code. Finally, tests should be repeatable, so that developers can reproduce and verify issues in the code.
In summary, unit testing is an important part of the software development process, and TypeScript provides a number of tools and techniques for unit testing TypeScript code. By using popular testing libraries such as Jest and Mocha, and utilizing the structure provided by TypeScript interfaces and classes, developers can write and run effective unit tests, improving the quality and stability of the code.
TypeScript for Coders – Chapter 30 : Unit Testing
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