expect_unique

Element uniqueness assertion

Passes if all elements in a Vector, List, or DataFrame are distinct. Returns Expect_stop detailing duplicate values if any are found.

Parameters

• x (Vector): | List | DataFrame The container or vector to check for uniqueness.

Returns

Expect_pass if all elements are unique; Expect_hold on NA; Expect_stop if duplicates exist.

Examples

assert(expect_unique([1, 2, 3, 4]))
assert(expect_unique(df.$id))

See Also

expect_equal, expect_in, expect_length