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use std::collections::BTreeMap;
#[test]
fn test_transform_one_value() {
let input = input_from(&[(1, vec!['A'])]);
let expected = expected_from(&[('a', 1)]);
assert_eq!(expected, etl::transform(&input));
}
#[test]
fn test_transform_more_values() {
let input = input_from(&[(1, vec!['A', 'E', 'I', 'O', 'U'])]);
let expected = expected_from(&[('a', 1), ('e', 1), ('i', 1), ('o', 1), ('u', 1)]);
assert_eq!(expected, etl::transform(&input));
}
#[test]
fn test_more_keys() {
let input = input_from(&[(1, vec!['A', 'E']), (2, vec!['D', 'G'])]);
let expected = expected_from(&[('a', 1), ('e', 1), ('d', 2), ('g', 2)]);
assert_eq!(expected, etl::transform(&input));
}
#[test]
fn test_full_dataset() {
let input = input_from(&[
(1, vec!['A', 'E', 'I', 'O', 'U', 'L', 'N', 'R', 'S', 'T']),
(2, vec!['D', 'G']),
(3, vec!['B', 'C', 'M', 'P']),
(4, vec!['F', 'H', 'V', 'W', 'Y']),
(5, vec!['K']),
(8, vec!['J', 'X']),
(10, vec!['Q', 'Z']),
]);
let expected = expected_from(&[
('a', 1),
('b', 3),
('c', 3),
('d', 2),
('e', 1),
('f', 4),
('g', 2),
('h', 4),
('i', 1),
('j', 8),
('k', 5),
('l', 1),
('m', 3),
('n', 1),
('o', 1),
('p', 3),
('q', 10),
('r', 1),
('s', 1),
('t', 1),
('u', 1),
('v', 4),
('w', 4),
('x', 8),
('y', 4),
('z', 10),
]);
assert_eq!(expected, etl::transform(&input));
}
fn input_from(v: &[(i32, Vec<char>)]) -> BTreeMap<i32, Vec<char>> {
v.iter().cloned().collect()
}
fn expected_from(v: &[(char, i32)]) -> BTreeMap<char, i32> {
v.iter().cloned().collect()
}
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