Does a string match a regular expression?
expect_match(
object,
regexp,
perl = FALSE,
fixed = FALSE,
...,
all = TRUE,
info = NULL,
label = NULL
)
expect_no_match(
object,
regexp,
perl = FALSE,
fixed = FALSE,
...,
all = TRUE,
info = NULL,
label = NULL
)
Object to test.
Supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.
Regular expression to test against.
logical. Should Perl-compatible regexps be used?
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’.
Should all elements of actual value match regexp
(TRUE),
or does only one need to match (FALSE).
Extra information to be included in the message. This argument is soft-deprecated and should not be used in new code. Instead see alternatives in quasi_label.
Used to customise failure messages. For expert use only.
expect_match()
is a wrapper around grepl()
. See its documentation for
more detail about the individual arguments. expect_no_match()
provides
the complementary case, checking that a string does not match a regular
expression.
expect_no_match
: Check that a string doesn't match a regular
expression.
Other expectations:
comparison-expectations
,
equality-expectations
,
expect_error()
,
expect_length()
,
expect_named()
,
expect_null()
,
expect_output()
,
expect_reference()
,
expect_silent()
,
inheritance-expectations
,
logical-expectations
expect_match("Testing is fun", "fun")
expect_match("Testing is fun", "f.n")
expect_no_match("Testing is fun", "horrible")
if (FALSE) {
expect_match("Testing is fun", "horrible")
# Zero-length inputs always fail
expect_match(character(), ".")
}