Does code return a vector with (given) names?

You can either check for the presence of names (leaving expected blank), specific names (by supplying a vector of names), or absence of names (with NULL).

expect_named(
  object,
  expected,
  ignore.order = FALSE,
  ignore.case = FALSE,
  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.
expected	Character vector of expected names. Leave missing to match any names. Use NULL to check for absence of names.
ignore.order	If TRUE, sorts names before comparing to ignore the effect of order.
ignore.case	If TRUE, lowercases all names to ignore the effect of case.
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_null(), expect_output(), expect_reference(), expect_silent(), inheritance-expectations, logical-expectations

Examples

x <- c(a = 1, b = 2, c = 3)
expect_named(x)
expect_named(x, c("a", "b", "c"))

# Use options to control sensitivity
expect_named(x, c("B", "C", "A"), ignore.order = TRUE, ignore.case = TRUE)

# Can also check for the absence of names with NULL
z <- 1:4
expect_named(z, NULL)