101 lines
3.1 KiB
Rust
101 lines
3.1 KiB
Rust
use itertools::free::merge_join_by;
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use itertools::EitherOrBoth;
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#[test]
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fn empty() {
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let left: Vec<u32> = vec![];
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let right: Vec<u32> = vec![];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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#[test]
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fn left_only() {
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let left: Vec<u32> = vec![1, 2, 3];
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let right: Vec<u32> = vec![];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![
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EitherOrBoth::Left(1),
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EitherOrBoth::Left(2),
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EitherOrBoth::Left(3),
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];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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#[test]
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fn right_only() {
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let left: Vec<u32> = vec![];
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let right: Vec<u32> = vec![1, 2, 3];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![
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EitherOrBoth::Right(1),
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EitherOrBoth::Right(2),
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EitherOrBoth::Right(3),
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];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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#[test]
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fn first_left_then_right() {
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let left: Vec<u32> = vec![1, 2, 3];
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let right: Vec<u32> = vec![4, 5, 6];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![
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EitherOrBoth::Left(1),
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EitherOrBoth::Left(2),
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EitherOrBoth::Left(3),
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EitherOrBoth::Right(4),
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EitherOrBoth::Right(5),
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EitherOrBoth::Right(6),
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];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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#[test]
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fn first_right_then_left() {
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let left: Vec<u32> = vec![4, 5, 6];
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let right: Vec<u32> = vec![1, 2, 3];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![
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EitherOrBoth::Right(1),
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EitherOrBoth::Right(2),
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EitherOrBoth::Right(3),
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EitherOrBoth::Left(4),
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EitherOrBoth::Left(5),
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EitherOrBoth::Left(6),
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];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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#[test]
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fn interspersed_left_and_right() {
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let left: Vec<u32> = vec![1, 3, 5];
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let right: Vec<u32> = vec![2, 4, 6];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![
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EitherOrBoth::Left(1),
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EitherOrBoth::Right(2),
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EitherOrBoth::Left(3),
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EitherOrBoth::Right(4),
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EitherOrBoth::Left(5),
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EitherOrBoth::Right(6),
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];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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#[test]
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fn overlapping_left_and_right() {
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let left: Vec<u32> = vec![1, 3, 4, 6];
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let right: Vec<u32> = vec![2, 3, 4, 5];
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let expected_result: Vec<EitherOrBoth<u32>> = vec![
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EitherOrBoth::Left(1),
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EitherOrBoth::Right(2),
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EitherOrBoth::Both(3, 3),
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EitherOrBoth::Both(4, 4),
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EitherOrBoth::Right(5),
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EitherOrBoth::Left(6),
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];
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let actual_result = merge_join_by(left, right, |l, r| l.cmp(r)).collect::<Vec<_>>();
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assert_eq!(expected_result, actual_result);
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}
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