check_predefined_objects: Test predefined R objects

In Data-Camp/testwhat: Easily write submission correctness tests for R exercises

Test predefined R objects

Description

At the start of your SCT, you typically want to check whether some predefined variables are still correct. test_predefined_object allows you to specify a vector of object names, together with a vector of equivalence conditions, evaluation specifications, undefined an incorrect messages.

Usage

check_predefined_objects(state, name, eq_condition = "equivalent",
  eval = TRUE, undefined_msg = NULL, incorrect_msg = NULL)

Arguments

state	the state to start from
name	vector of names of the objects to check
eq_condition	character vector indicating how to compare. See is_equal.
eval	logical vector indicating whether or not you want to check only the objects' existence or also whether their values match the solution.
undefined_msg	vector version of undefined_msg of check_object
incorrect_msg	vector version of incorrect_msg of check_object

Examples

## Not run: 
# Suppose the sample code specifies the variables a, b and c,
# and you want to check that a, b and c haven't changed.
ex() %>% check_predefined_objects(c("a", "b", "c"))

## End(Not run)

Data-Camp/testwhat documentation built on June 24, 2022, 9:59 p.m.