Chapter 1: Introduction to Unit Testing
* Summary: Introduces the concept of unit testing, its benefits, and its importance in software development.
* Example: A developer creates unit tests for a function that calculates the area of a circle.
Chapter 2: Getting Started with Unit Testing Frameworks
* Summary: Describes popular unit testing frameworks such as JUnit (Java), NUnit (C#), and PHPUnit (PHP) and how to set them up and use them.
* Example: The developer installs JUnit and writes test cases using JUnit's annotations.
Chapter 3: Writing Effective Unit Tests
* Summary: Guides on designing effective unit tests, including test principles, test coverage, and mocking techniques.
* Example: The developer uses the Arrange-Act-Assert pattern to write a test that verifies the area calculation function returns the correct value for a given radius.
Chapter 4: Mocking and Test Doubles
* Summary: Explores the concept of mocking, which allows you to simulate external dependencies during unit testing.
* Example: The developer uses Mockito (Java) to mock a database connection and verify interactions with it in a test.
Chapter 5: Advanced Unit Testing Techniques
* Summary: Introduces advanced testing techniques such as property-based testing, performance testing, and end-to-end testing.
* Example: The developer uses JUnit 5's ParameterizedTest to test different scenarios of the area calculation function with various radii.
Chapter 6: Integration with CI/CD
* Summary: Discusses how to integrate unit testing into continuous integration and continuous delivery (CI/CD) pipelines.
* Example: The developer sets up a CI/CD pipeline that runs unit tests on every code change and notifies the team if the tests fail.
Chapter 7: Best Practices for Unit Testing
* Summary: Provides best practices for effective unit testing, including code organization, naming conventions, and versioning.
* Example: The developer creates a separate test package for unit tests and follows naming conventions like `testCalculateArea` for test methods.
Chapter 8: Unit Testing for Specific Languages
* Summary: Explores unit testing considerations for specific programming languages, including Java, Python, C++, and JavaScript.
* Example: The developer learns about Python's built-in unit testing module and how to use it to test Python code.
Chapter 9: Common Unit Testing Pitfalls
* Summary: Identifies common pitfalls in unit testing and provides guidance on how to avoid them.
* Example: The developer learns about the importance of avoiding hard-coded values in tests and using parameterized tests instead.
Chapter 10: Conclusion
* Summary: Summarizes the key concepts of unit testing and its benefits, and encourages developers to incorporate unit testing into their development practices.
* Example: The developer reflects on how unit testing has improved their software quality and reduced development time.
