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 | 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. |
---|---|
regexp | Regular expression to test against. |
perl | logical. Should Perl-compatible regexps be used? |
fixed | logical. If |
... | Arguments passed on to
|
all | Should all elements of actual value match |
info | 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. |
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(), ".") }