Expectation: does string match a regular expression?

Expectation: does string match a regular expression?

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

Arguments

object	object to test
regexp	Regular expression to test against.
perl	logical. Should Perl-compatible regexps be used?
fixed	logical. If TRUE, pattern is a string to be matched as is. Overrides all conflicting arguments.
...	Arguments passed on to base::grepl ignore.case if FALSE, the pattern matching is case sensitive and if TRUE, case is ignored during matching. useBytes logical. If TRUE the matching is done byte-by-byte rather than character-by-character. See ‘Details’.
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_length, expect_named, inheritance-expectations, logical-expectations, output-expectations

Examples

expect_match("Testing is fun", "fun")
expect_match("Testing is fun", "f.n")
# NOT RUN {
expect_match("Testing is fun", "horrible")

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