expect_true {testthat} | R Documentation |
These are fall-back expectations that you can use when none of the other more specific expectations apply. The disadvantage is that you may get a less informative error message.
expect_true(object, info = NULL, label = NULL) expect_false(object, info = NULL, label = NULL)
object |
object to test |
info |
extra information to be included in the message (useful when writing tests in loops). |
label |
object label. When |
Attributes are ignored.
is_false
for complement
Other expectations: equivalence
,
expect_equal
,
expect_equivalent
,
expect_identical
;
expect-compare
, expect_gt
,
expect_gte
, expect_less_than
,
expect_lt
, expect_lte
,
expect_more_than
;
expect_equal_to_reference
;
expect_error
, expect_match
,
expect_message
,
expect_output
,
expect_warning
,
matching-expectations
;
expect_is
; expect_named
;
expect_null
; expect_silent
;
takes_less_than
expect_true(2 == 2) # Failed expectations will throw an error ## Not run: expect_true(2 != 2) ## End(Not run) expect_true(!(2 != 2)) # or better: expect_false(2 != 2) a <- 1:3 expect_true(length(a) == 3) # but better to use more specific expectation, if available expect_equal(length(a), 3)