testthat (version 1.0.2)

expect_match: Expectation: does string/output/message/warning/error match a regular expression?

Description

Expectation: does string/output/message/warning/error match a regular expression?

Usage

expect_match(object, regexp, ..., all = TRUE, info = NULL, label = NULL)

Arguments

object

object to test

regexp

Regular expression to test against.

...

Additional arguments passed on to grepl, e.g. ignore.case or fixed.

all

Should all elements of actual value match regexp (TRUE), or does only one need to match (FALSE)

info

extra information to be included in the message (useful when writing tests in loops).

label

object label. When NULL, computed from deparsed object.

See Also

Other expectations: comparison-expectations, equality-expectations, expect_equal_to_reference, expect_length, expect_named, inheritance-expectations, logical-expectations, output-expectations

Examples

expect_match("Testing is fun", "fun")
expect_match("Testing is fun", "f.n")

expect_match("Testing is fun", "horrible")

# Zero-length inputs always fail
expect_match(character(), ".")