expect_null {testthat} | R Documentation |
Does code return NULL
?
Description
This is a special case because NULL
is a singleton so it's possible
check for it either with expect_equal(x, NULL)
or expect_type(x, "NULL")
.
Usage
expect_null(object, info = NULL, label = NULL)
Arguments
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. |
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. |
See Also
Other expectations:
comparison-expectations
,
equality-expectations
,
expect_error()
,
expect_length()
,
expect_match()
,
expect_named()
,
expect_output()
,
expect_reference()
,
expect_silent()
,
inheritance-expectations
,
logical-expectations
Examples
x <- NULL
y <- 10
expect_null(x)
show_failure(expect_null(y))
[Package testthat version 3.2.0 Index]