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Mutation Operators Supported by mutator

operators.Rd

This help page lists the mutation operators that the mutator package supports for mutation testing in R.

Details

The following mutation operators can be applied to R code:

  • cxx_add_to_sub: Replaces + with -

  • cxx_and_to_or: Replaces \& with |

  • cxx_assign_const: Replaces a = b with a = 42

  • cxx_div_to_mul: Replaces / with *

  • cxx_eq_to_ne: Replaces == with !=

  • cxx_ge_to_gt: Replaces >= with >

  • cxx_ge_to_lt: Replaces >= with <

  • cxx_gt_to_ge: Replaces > with >=

  • cxx_gt_to_le: Replaces > with <=

  • cxx_le_to_gt: Replaces <= with >

  • cxx_le_to_lt: Replaces <= with <

  • cxx_logical_and_to_or: Replaces && with ||

  • cxx_logical_or_to_and: Replaces || with &&

  • cxx_lt_to_ge: Replaces < with >=

  • cxx_lt_to_le: Replaces < with <=

  • cxx_minus_to_noop: Replaces -x with x

  • cxx_mul_to_div: Replaces * with /

  • cxx_ne_to_eq: Replaces != with ==

  • cxx_or_to_and: Replaces | with \&

  • cxx_remove_negation: Replaces !a with a

  • cxx_replace_scalar_call: Replaces a function call with 42

  • cxx_sub_to_add: Replaces - with +

  • negate_mutator: Negates conditionals !x to x and x to !x

  • scalar_value_mutator: Replaces zeros with 42, and non-zeros with 0

These operators allow the mutator package to systematically alter source code in controlled ways, enabling thorough testing of R code and ensuring that tests are sensitive to subtle code changes.

Author

Assanali Amandykov and Pierre Donat-Bouillud