Does code return NULL?
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").
expect_null(object, 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. |
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. |
Other expectations:
comparison-expectations,
equality-expectations,
expect_error(),
expect_length(),
expect_match(),
expect_named(),
expect_output(),
expect_reference(),
expect_silent(),
inheritance-expectations,
logical-expectations
x <- NULL y <- 10 expect_null(x) show_failure(expect_null(y))
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