mod and_then;
mod common;
mod map_err;
mod trait_;
mod try_filter;
mod try_filter_map;
mod try_flat_map;
mod try_flat_map_results;
mod try_flatten;
mod try_flatten_results;
mod try_scan;
pub use and_then::*;
pub use map_err::*;
pub use trait_::*;
pub use try_filter::*;
pub use try_filter_map::*;
pub use try_flat_map::*;
pub use try_flat_map_results::*;
pub use try_flatten::*;
pub use try_flatten_results::*;
pub use try_scan::*;
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn try_scan_test_1() {
let input = vec![Ok(1usize), Ok(2), Err("err"), Ok(3)];
let output: Vec<_> = input
.into_iter()
.try_scan(0, |acc, val| {
*acc += val;
Ok(Some(*acc))
})
.collect();
assert_eq!(output, vec![Ok(1), Ok(3), Err("err")]);
}
#[test]
fn try_scan_test_2() {
let input = vec![Ok(1usize), Ok(2), Err("err"), Ok(3)];
let output: Vec<_> = input
.into_iter()
.try_scan(0, |acc, val| {
if val % 2 != 0 {
*acc += val;
Ok(Some(*acc))
} else {
Ok(None)
}
})
.collect();
assert_eq!(output, vec![Ok(1)]);
}
#[test]
fn try_scan_test_3() {
let input = vec![Ok(1usize), Ok(3), Ok(2)];
let output: Vec<_> = input
.into_iter()
.try_scan(0, |acc, val| {
if val % 2 != 0 {
*acc += val;
Ok(Some(*acc))
} else {
Err("found even")
}
})
.collect();
assert_eq!(output, vec![Ok(1), Ok(4), Err("found even")]);
}
#[test]
fn try_flatten_test() {
let input = vec![Ok(vec![1usize, 2]), Err("err"), Ok(vec![3])];
let output: Vec<_> = input.into_iter().try_flatten().collect();
assert_eq!(output, vec![Ok(1), Ok(2), Err("err")]);
}
#[test]
fn try_flat_map_test() {
let input = vec![Ok(vec![1, 2]), Err("err"), Ok(vec![3])];
let output: Vec<_> = input.into_iter().try_flat_map(Ok).collect();
assert_eq!(output, vec![Ok(1usize), Ok(2), Err("err")]);
}
#[test]
fn try_flatten_results_test_1() {
let input = vec![
Ok(vec![Ok(1usize), Ok(2)]),
Ok(vec![Err("err"), Ok(3)]),
Ok(vec![Ok(4)]),
];
let output: Vec<_> = input.into_iter().try_flatten_results().collect();
assert_eq!(output, vec![Ok(1usize), Ok(2), Err("err")]);
}
#[test]
fn try_flatten_results_test_2() {
let input = vec![Ok(vec![Ok(1usize), Ok(2)]), Err("err"), Ok(vec![Ok(3)])];
let output: Vec<_> = input.into_iter().try_flatten_results().collect();
assert_eq!(output, vec![Ok(1usize), Ok(2), Err("err")]);
}
#[test]
fn try_flat_map_results_test_1() {
let input = vec![
Ok(vec![Ok(1usize), Ok(2)]),
Ok(vec![Err("err"), Ok(3)]),
Ok(vec![Ok(4)]),
];
let output: Vec<_> = input.into_iter().try_flat_map_results(Ok).collect();
assert_eq!(output, vec![Ok(1usize), Ok(2), Err("err")]);
}
#[test]
fn try_flat_map_results_test_2() {
let input = vec![Ok(vec![Ok(1usize), Ok(2)]), Err("err"), Ok(vec![Ok(3)])];
let output: Vec<_> = input.into_iter().try_flat_map_results(Ok).collect();
assert_eq!(output, vec![Ok(1usize), Ok(2), Err("err")]);
}
#[test]
fn try_filter_test() {
let input = vec![Ok(1usize), Ok(2), Ok(3), Err("err"), Ok(4)];
let output: Vec<_> = input
.into_iter()
.try_filter(|val| Ok(val % 2 == 1))
.collect();
assert_eq!(output, vec![Ok(1usize), Ok(3), Err("err")]);
}
#[test]
fn try_filter_map_test() {
let input = vec![
Ok(Some(1usize)),
Ok(None),
Ok(Some(3usize)),
Err("err"),
Ok(Some(4usize)),
];
let output: Vec<_> = input.into_iter().try_filter_map(Ok).collect();
assert_eq!(output, vec![Ok(1usize), Ok(3), Err("err")]);
}
#[test]
fn and_then_test() {
let input = vec![Ok(1isize), Ok(2), Err("err"), Ok(3)];
let output: Vec<_> = input.into_iter().and_then(|val| Ok(-val)).collect();
assert_eq!(output, vec![Ok(-1), Ok(-2), Err("err")]);
}
}