Nothing
test_that("numeric", {
expect_true(is.numeric(1))
expect_true(is.numeric(integer(0)))
expect_true(is.numeric(matrix(1L)))
expect_true(is.numeric(array(1L)))
expect_false(is.numeric(TRUE))
expect_false(is.numeric(TRUE))
expect_false(is.numeric(structure(TRUE, class = "numeric")))
expect_true(is.numeric(structure(1, class = "numeric")))
expect_false(is.numeric(structure(list(), class = "numeric")))
})
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