expect_vector: Does code return a vector with the expected size and/or...

Description Usage Arguments Examples

View source: R/expect-vector.R

Description

expect_vector() is a thin wrapper around vctrs::vec_assert(), converting the results of that function in to the expectations used by testthat. This means that it used the vctrs of ptype (prototype) and size. See details in https://vctrs.r-lib.org/articles/type-size.html

Usage

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expect_vector(object, ptype = NULL, size = 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.

ptype

(Optional) Vector prototype to test against. Should be a size-0 (empty) generalised vector.

size

(Optional) Size to check for.

Examples

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if (requireNamespace("vctrs") && packageVersion("vctrs") > "0.1.0.9002") {
expect_vector(1:10, ptype = integer(), size = 10)
show_failure(expect_vector(1:10, ptype = integer(), size = 5))
show_failure(expect_vector(1:10, ptype = character(), size = 5))
}

r-lib/testthat documentation built on Sept. 25, 2021, 3:02 p.m.