Testing R Code (Chapman & Hall/CRC: The R Series)

Testing R Code (Chapman & Hall/CRC: The R Series)

By: Richard Cotton (author)Hardback

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Description

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!

Contents

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

Product Details

  • ISBN13: 9781498763653
  • Format: Hardback
  • Number Of Pages: 178
  • ID: 9781498763653
  • weight: 408
  • ISBN10: 1498763650

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