has_names {testthat}R Documentation

Expectation: does object have names?

Description

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

Usage

has_names(expected, ignore.order = FALSE, ignore.case = FALSE)

expect_named(object, expected, ..., info = NULL, label = NULL)

Arguments

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.

object

object to test

...

Other arguments passed onto has_names.

info

extra information to be included in the message (useful when writing tests in loops).

label

object label. When NULL, computed from deparsed object.

See Also

Other expectations: equals_reference, expect_equal_to_reference; equals, expect_equal; expect-compare, expect_less_than, expect_more_than, is_less_than, is_more_than; expect_equivalent, is_equivalent_to; expect_error, throws_error; expect_false, expect_true, is_false, is_true; expect_identical, is_identical_to; expect_is, is_a; expect_match, matches; expect_message, shows_message; expect_null, is_null; expect_output, prints_text; expect_warning, gives_warning; takes_less_than

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)
[Package testthat version 0.9.1 Index]