test_that("distinct_values", {
x = factor(c(letters[1:2], NA), levels = letters[1:3])
expect_character(distinct_values(x), len = 2, any.missing = FALSE)
expect_character(distinct_values(x, na_rm = FALSE), len = 3, any.missing = TRUE)
expect_character(distinct_values(x, drop = FALSE), len = 3, any.missing = FALSE)
expect_character(distinct_values(x, drop = FALSE, na_rm = FALSE), len = 4, any.missing = TRUE)
x = c(TRUE, NA)
expect_logical(distinct_values(x), len = 1, any.missing = FALSE)
expect_logical(distinct_values(x, na_rm = FALSE), len = 2)
expect_logical(distinct_values(x, drop = FALSE, na_rm = TRUE), len = 2, any.missing = FALSE)
expect_logical(distinct_values(x, drop = FALSE, na_rm = FALSE), len = 3)
x = c(1:3, NA)
expect_integer(distinct_values(x, na_rm = TRUE, drop = TRUE), len = 3, any.missing = FALSE)
expect_integer(distinct_values(x, na_rm = FALSE, drop = TRUE), len = 4, any.missing = TRUE)
expect_integer(distinct_values(x, na_rm = TRUE, drop = FALSE), len = 3, any.missing = FALSE)
expect_integer(distinct_values(x, na_rm = FALSE, drop = FALSE), len = 4, any.missing = TRUE)
})
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