Python Continuous Integration and Delivery: A Concise Guide with Examples

© Moritz Lenz 2019

Moritz LenzPython Continuous Integration and Deliveryhttps://doi.org/10.1007/978-1-4842-4281-0_1

1. Automated Testing

Moritz Lenz¹ 

(1)

Fürth, Bayern, Germany

 

Before diving into examples of how to test Python code, the nature of tests must be discussed in more detail. Why do we want to have tests? What do we gain from them? What are the downsides? What makes a good test; what’s a bad test? How can we classify tests? And how many of which kinds of tests should we write?

1.1 What Do We Want from a Test?

Why bother with writing tests at all? There are a number of reasons why we want to write or, at least, have tests.

It is not uncommon to have several tests in a test suite, written in response to different needs.

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