Richard Cotton

Testing R Code

• Broschiertes Buch

Produktbeschreibung

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!

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Produktdetails

• Verlag: Chapman and Hall/CRC
• Seitenzahl: 196
• Erscheinungstermin: 31. März 2021
• Englisch
• Abmessung: 234mm x 156mm x 11mm
• Gewicht: 307g
• ISBN-13: 9780367782375
• ISBN-10: 0367782375
• Artikelnr.: 61211213

Autorenporträt

Richard Cotton

Inhaltsangabe

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