Testing R Code

1. Auflage 2021
ISBN: 978-0-367-78237-5
Verlag: Chapman and Hall/CRC

Buch, Englisch, 196 Seiten, Format (B × H): 156 mm x 234 mm, Gewicht: 307 g

Reihe: Chapman & Hall/CRC The R Series

Learn how to write R code with fewer bugs.

The problem with programming is that you are always one typo away from writing something silly. Likewise with data analysis, a small mistake in your model can lead to a big mistake in your results. Combining the two disciplines means that it is all too easy for a missed minus sign to generate a false prediction that you don’t spot until it’s too late. Testing is the only way to be sure that your code, and your results, are correct.

Testing R Code teaches you how to perform development-time testing using the testthat package, allowing you to ensure that your code works as intended. The book also teaches run-time testing using the assertive package; enabling your users to correctly run your code.

After beginning with an introduction to testing in R, the book explores more advanced cases such as integrating tests into R packages; testing code that accesses databases; testing C++ code with Rcpp; and testing graphics. Each topic is explained with real-world examples, and has accompanying exercises for readers to practise their skills — only a small amount of experience with R is needed to get started!

Autoren/Hrsg.

Cotton, Richard

Fachgebiete

• Mathematik | Informatik EDV | Informatik EDV & Informatik Allgemein
• Mathematik | Informatik Mathematik Stochastik

Inhaltsverzeichnis

Introduction

Run-time testing with assertive

Development-time testing with testthat

Writing easily maintainable and testable code

Integrating testing into your packages

Writing your own assertions and expectations

Answers to exercises

Über Autor(innen)

Richard Cotton