Python Testing with pytest, Second Edition

eBook Details:

• Paperback: 274 pages
• Publisher: WOW! eBook; 2nd edition (March 29, 2022)
• Language: English
• ISBN-10: 1680508601
• ISBN-13: 978-1680508604

eBook Description:

Python Testing with pytest: Simple, Rapid, Effective, and Scalable, 2nd Edition

Test applications, packages, and libraries large and small with pytest, Python’s most powerful testing framework. pytest helps you write tests quickly and keep them readable and maintainable. In this fully revised edition, explore pytest’s superpowers simple asserts, fixtures, parametrization, markers, and plugins while creating simple tests and test suites against a small database application. Using a robust yet simple fixture model, it’s just as easy to write small tests with pytest as it is to scale up to complex functional testing. This Python Testing with pytest, 2nd Edition book shows you how.

pytest is undeniably the best choice for testing Python projects. It’s a full-featured, flexible, and extensible testing framework. pytest’s fixture model allows you to share test data and setup procedures across multiple layers of tests. The pytest framework gives you powerful features such as assert rewriting, parametrization, markers, plugins, parallel test execution, and clear test failure reporting with no boilerplate code.

With simple step-by-step instructions and sample code, this book gets you up to speed quickly on this easy-to-learn yet powerful tool. Write short, maintainable tests that elegantly express what you’re testing. Speed up test times by distributing tests across multiple processors and running tests in parallel. Use Python’s built-in assert statements instead of awkward assert helper functions to make your tests more readable. Move setup code out of tests and into fixtures to separate setup failures from test failures. Test error conditions and corner cases with expected exception testing, and use one test to run many test cases with parameterized testing. Extend pytest with plugins, connect it to continuous integration systems, and use it in tandem with tox, mock, coverage, and even existing unittest tests.

With this Python Testing with pytest, Second Edition book you will learn to write simple, maintainable tests quickly with pytest.

What You Need

The examples in this Python Testing with pytest, Second Edition book were written using Python 3.10 and pytest 7. pytest 7 supports Python 3.5 and above.