check_code: Test the student's code as text

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

Test the student's code as text

Description

Some rudimentary string cleaning is performed to allow for different ways of saying the same things (removing spaces, changing single quotes to double quotes, changing TRUE to T ...).

Usage

check_code(state, regex, fixed = FALSE, times = 1,
  missing_msg = NULL, append = TRUE, drop_comments = FALSE)

Arguments

state	the state to start from
regex	A set of strings/regexes that should be in the student code.
fixed	if TRUE, strings are treated literally. If FALSE, strings are treated as regex patterns.
times	how often should any of the strings be matched?
missing_msg	Custom feedback in case the pattern is not contained often enough in the student's submission.
append	Whether or not to append the feedback to feedback built in previous states
drop_comments	Logical value indicating whether or not to remove comments from these student code before looking for the pattern. Defaults to FALSE for backwards compatibility reasons.

Details

Using these function should be a last resort, as there are myriad ways of solving the same problem with R!

Examples

## Not run: 
# Example 1
TRUE & FALSE

# SCT
ex() %>% check_code(c("TRUE & FALSE", "FALSE & TRUE"), fixed = TRUE)

# Example 2:
"Hello, world!"

# SCT, robust to small typos
ex() %>% check_code("[H|h]ello,*\\s*[W|w]orld\\!*")

## End(Not run)

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