Create an assertion that validates the output matches a regular expression.
Usage
assert_matches(
field = NULL,
pattern,
message = NULL,
ignore_case = FALSE,
type = c("assert", "suggest")
)Arguments
- field
The output field to check. If NULL, checks the entire output.
- pattern
The regular expression pattern to match.
- message
Optional custom error message. If NULL, generates a default.
- ignore_case
Logical. If TRUE, matching is case-insensitive. Default FALSE.
- type
"assert" for hard assertion (default), "suggest" for soft suggestion.
Examples
if (FALSE) { # \dontrun{
# Must start with capital letter
assert_matches("answer", "^[A-Z]", "Must start with capital letter")
# Must be a valid email format (simple check)
assert_matches("email", "^[^@]+@[^@]+\\.[^@]+$", "Must be valid email")
# Must end with period
assert_matches("summary", "\\.$", "Must end with period")
} # }