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exampletestr-An easy start to unit testing R packages.

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  • 1Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK.

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Summary
This summary is machine-generated.

Most R package developers neglect unit tests. The exampletestr tool simplifies unit test creation by generating test shells from package documentation examples, ensuring code correctness and aiding comprehensive test suite development.

Keywords:
Rcovrexampletestrtesttestingtestthatunit

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Area of Science:

  • Computer Science
  • Software Engineering

Background:

  • Unit tests are crucial for software quality but are underutilized by R package developers.
  • Existing methods for creating unit tests can be time-consuming and complex.

Purpose of the Study:

  • To simplify the process of writing unit tests for R packages.
  • To encourage greater adoption of unit testing practices among R developers.

Main Methods:

  • Developed the exampletestr R package to automatically generate unit test skeletons.
  • Leveraged existing examples from R package documentation as a basis for test creation.
  • Integrated exampletestr with the covr package for comprehensive test coverage analysis.

Main Results:

  • exampletestr successfully creates functional unit test shells from package documentation examples.
  • The generated tests verify the correctness of the documented examples.
  • Combining exampletestr and covr significantly reduces the effort required for comprehensive R package unit testing.

Conclusions:

  • exampletestr lowers the barrier to entry for R package unit testing.
  • Automating test generation from examples enhances code quality and developer efficiency.
  • This approach facilitates the creation of robust and well-tested R packages.