expect_all_equal: Do you expect every value in a vector to have this value?

In testthat: Unit Testing for R

Do you expect every value in a vector to have this value?

Description

These expectations are similar to expect_true(all(x == "x")), expect_true(all(x)) and expect_true(all(!x)) but give more informative failure messages if the expectations are not met.

Usage

expect_all_equal(object, expected)

expect_all_true(object)

expect_all_false(object)

Arguments

object, expected

Computation and value to compare it to. Both arguments supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.

Examples

x1 <- c(1, 1, 1, 1, 1, 1)
expect_all_equal(x1, 1)

x2 <- c(1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2)
show_failure(expect_all_equal(x2, 1))

# expect_all_true() and expect_all_false() are helpers for common cases
set.seed(1016)
show_failure(expect_all_true(rpois(100, 10) < 20))
show_failure(expect_all_false(rpois(100, 10) > 20))

testthat documentation built on Nov. 25, 2025, 5:09 p.m.