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Unit Testing Principles, Practices, and Patterns: Effective Testing Styles, Patterns, and Reliable Automation for Unit Testing, Mocking, and Integration Testing with Examples in C#

The Art of Unit Testing: with examples in C#

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Practical Unit Testing with JUnit and Mockito

Testing Python: Applying Unit Testing, TDD, BDD and Acceptance Testing

Pragmatic Unit Testing in Java with JUnit

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Practical Unit Testing with JUnit and Mockito

Practical Unit Testing with JUnit and Mockito

The Art of Unit Testing: With Examples in .net