Extra Check Functions for RUnit

Usage

checkWarning(expr, expected = NULL, msg = NULL)

Arguments

expr: an R expression
expected: expected value or regular expression pattern
msg: informative message to add to the error in case of failure

Description

checkWarning checks if a warning is generated by an expression, and optionally follows an expected regular expression pattern.

Examples

# check warnings
checkWarning({ warning('ah ah'); 3})

Using RUnit framework provider: RUnit
Warning message:
ah ah
[1] TRUE
checkWarning({ warning('ah oh ah'); 3}, 'oh')

Warning message:
ah oh ah
[1] TRUE
try( checkWarning(3) )
try( checkWarning({ warning('ah ah'); 3}, 'warn you') )

Warning message:
ah ah