check_function_result: Check the result of a function call/operation

In datacamp/testwhat: Easily write submission correctness tests for R exercises

Check the result of a function call/operation

Description

Check the result of a function call/operation

Usage

## S3 method for class 'OperationState'
check_result(state, error_msg = NULL,
  append = TRUE, ...)

## S3 method for class 'FunctionState'
check_result(state, error_msg = NULL,
  append = TRUE, ...)

## S3 method for class 'FunctionResultState'
check_equal(state,
  eq_condition = "equivalent", eq_fun = NULL, incorrect_msg = NULL,
  append = TRUE, ...)

## S3 method for class 'OperationResultState'
check_equal(state,
  eq_condition = "equivalent", eq_fun = NULL, incorrect_msg = NULL,
  append = TRUE, ...)

Arguments

state	the state to start from (for check_ functions)
error_msg	feedback message in case the student function call at the mentioned index generated an error.
append	Whether or not to append the feedback to feedback built in previous states
...	S3 stuff
eq_condition	character string indicating how to compare. See is_equal.
eq_fun	optional argument to specify a custom equality function. The function should take two arguments and always return a single boolean value: TRUE or FALSE.
incorrect_msg	feedback message in case the evaluation was not the same as in the solution.

Examples

## Not run: 
# Example 1
mean(1:3)

# SCT
ex() %>% check_function("mean") %>% check_result() %>% check_equal()

## End(Not run)

datacamp/testwhat documentation built on June 26, 2022, 9:07 a.m.