Data Science Essentials in Python

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 book shows you

how.