ensure: Ensure checks that certain preconditions and postconditions...

In peterhurford/checkr: Automatically Test R Functions

Description

Ensure checks that certain preconditions and postconditions of a function are true.

Usage

ensure(checker_fn, preconditions = list(), postconditions = list())

Arguments

checker_fn	function. A function to run with validated pre- and postconditions.
preconditions	list. A list of preconditions to check.
postconditions	list. A list of postconditions to check.

Value

The original function, but also of class validated_function, with added validations.

Examples

  add <- ensure(pre = list(x %is% numeric, y %is% numeric),
    post = list(result %is% numeric),
    function(x, y) { x + y })

peterhurford/checkr documentation built on May 25, 2019, 1:50 a.m.