在R包的/src文件夹中进行代码的单元测试? [英] Unit tests for code in the /src folder of an R package?

问题描述

我正在为R程序包做出贡献，该程序包广泛使用C代码进行计算.

I am contributing to an R package that makes extensive use of C code for computation.

我们已经开始使用 testthat 包为R函数编写测试，并将按照此处的说明在inst/tests中进行测试.

We have started writing tests for R functions using the testthat package, placing the tests in inst/tests following instructions here.

testthat软件包是否适合直接测试C函数(例如那些没有R接口的函数)?还是我们找到一个单独的C测试包?如果是这样，1)这些测试应该去哪里，2)如何在R CMD check期间运行它们，以及3)在这种情况下，任何C测试包是否特别合适?

Is the testthat package appropriate for testing C functions directly (e.g. those without R interfaces)? Or do we find a separate C testing package? If so, 1) where should these tests go, 2) how do I get them to run during R CMD check, and 3) is any C testing package particularly appropriate in this context?

推荐答案

我发现这个问题有些困惑:

I find the question a little confused:

• 您要么认为您的C代码都支持可以在R上进行测试的高级R函数(好像您已经这样做了)

• Either you consider your C code to be in support of higher-level R functions that you can test at the R (as you seem to have done)

或者您认为您的C代码更独立，在这种情况下，您可以使用一个不计其数的C单元测试框架.

Or you consider your C code to be more standalone, in which case you could use one of a bazillion unit testing frameworks for C.

许多使用Rcpp的软件包还通过RUnit或testthat使用了大量的单元测试.您可以看一下.我通常在R函数级别进行测试，这通常意味着对基础C ++函数进行了测试.

Many of the packages using Rcpp also use extensive unit testing, either via RUnit, or via testthat. You could look at that. I generally test at the R function level, which often implies a test of the underlying C++ function.

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