Nothing
test_that("work on vectors", {
expect_equal(first(letters), "a")
expect_equal(last(letters), "z")
expect_equal(nth(letters, 3), "c")
expect_equal(nth(letters, -1), "z")
# Returns default when out of bounds
expect_equal(nth(letters, 27), NA_character_)
expect_equal(nth(letters, 0, "test"), "test")
# na_rm works
expect_equal(first(c(NA, 1), na_rm = TRUE), 1)
})
test_that("work on data frames", {
df <- tidytable(x = 1:3, y = 1:3)
expect_equal(first(df), head(df, 1))
expect_equal(last(df), tail(df, 1))
})
test_that("work on lists", {
l <- list(x = "x", y = "y")
expect_equal(first(l), "x")
expect_equal(last(l), "y")
expect_equal(nth(l, 3), NULL)
})
test_that("works with dot", {
expect_equal(suppressWarnings(first.(letters)), "a")
expect_equal(suppressWarnings(last.(letters)), "z")
expect_equal(suppressWarnings(nth.(letters, 3)), "c")
})
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