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Academic & Professional Books  Reference  Data Analysis & Modelling  R (Programming Language)

Testing R Code

Handbook / Manual
By: Richard James Cotton(Author)
196 pages, 10 b/w illustrations
Testing R Code
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  • Testing R Code ISBN: 9781498763653 Hardback Jan 2017 Not in stock: Usually dispatched within 1 week
Price: £39.99
About this book Contents Customer reviews Biography Related titles

About this book

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, Testing R Code 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!


- 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

Customer Reviews


Richard James Cotton is a data scientist with a mixed background in proteomics, debt collection and chemical health and safety, and has worked extensively on tools to give non-technical users access to statistical models. He is the author of several dozen R packages, including "assertive" for run-time testing. He is active in the R community, as the founder and organiser of DohaR - the Doha R User Group.

Handbook / Manual
By: Richard James Cotton(Author)
196 pages, 10 b/w illustrations
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