move combination tests

main
annieversary 2021-11-11 14:50:21 +00:00
parent bf85419c16
commit 231f68970f
3 changed files with 109 additions and 102 deletions

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@ -113,3 +113,112 @@ where
A::over(&self.0, thing, |b| B::over(&self.1, b, &mut f))
}
}
#[cfg(test)]
mod tests {
use crate::{
lenses::{_0, _1},
prisms::_Some,
traversals::each,
};
#[test]
fn can_view_lens_combination() {
let a = ((1, 2), 3);
let lens = _0 + _1;
let a = lens(a);
assert_eq!(a, 2);
}
#[test]
fn can_over_lens_combination() {
let a = ((1, 2), 3);
let lens = _0 + _1;
let a = lens(a, |v| v + 1);
assert_eq!(a, ((1, 3), 3));
}
#[test]
fn can_combine_traversals() {
let array = [vec![1, 2], vec![3, 4]];
// combine two traversals
let res = (each + each)(array, |v| v + 1);
assert_eq!(res, [vec![2, 3], vec![4, 5]]);
}
#[test]
fn can_combine_traversal_with_lens() {
let array = [(1, 2), (3, 4), (5, 6)];
// combine a traversal with a lens
let t = each + _0;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 3, 5]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, [(2, 2), (4, 4), (6, 6)]);
}
#[test]
fn can_combine_lens_with_traversal() {
let array = [(1, 2), (3, 4), (5, 6)];
// combine a traversal with a lens
let t = _0 + each;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 2]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, [(2, 3), (3, 4), (5, 6)]);
}
#[test]
fn can_combine_prism_with_traversal() {
let array = [Some(1), None, Some(3), None, Some(5)];
// combine a traversal with a lens
let t = each + _Some;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 3, 5]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, [Some(2), None, Some(4), None, Some(6)]);
}
#[test]
fn can_combine_traversal_with_prism() {
let array = Some([1, 2, 3]);
// combine a traversal with a lens
let t = _Some + each;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 2, 3]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, Some([2, 3, 4]));
let array: Option<[i32; 3]> = None;
// traverse
let res = t(array);
assert_eq!(res, vec![]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, None);
}
}

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@ -129,24 +129,6 @@ mod tests {
assert_eq!(a, [1, 3, 3, 4]);
}
#[test]
fn view_combination() {
let a = ((1, 2), 3);
let lens = _0 + _1;
let a = view(lens, a);
assert_eq!(a, 2);
}
#[test]
fn over_combination() {
let a = ((1, 2), 3);
let lens = _0 + _1;
let a = over(lens, a, |v| v + 1);
assert_eq!(a, ((1, 3), 3));
}
#[test]
fn call_as_funcs() {
let a = (1, 2);

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@ -142,8 +142,6 @@ pub fn over<T, L: TraversalOver<T>>(lens: L, thing: T, f: impl FnMut(L::Field) -
#[cfg(test)]
mod tests {
use crate::{lenses::_0, prisms::_Some};
use super::*;
#[test]
@ -156,86 +154,4 @@ mod tests {
let res = each(array, |v| v + 1);
assert_eq!(res, [2, 3, 4, 5]);
}
#[test]
fn can_combine_traversals() {
let array = [vec![1, 2], vec![3, 4]];
// combine two traversals
let res = (each + each)(array, |v| v + 1);
assert_eq!(res, [vec![2, 3], vec![4, 5]]);
}
#[test]
fn can_combine_traversal_with_lens() {
let array = [(1, 2), (3, 4), (5, 6)];
// combine a traversal with a lens
let t = each + _0;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 3, 5]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, [(2, 2), (4, 4), (6, 6)]);
}
#[test]
fn can_combine_lens_with_traversal() {
let array = [(1, 2), (3, 4), (5, 6)];
// combine a traversal with a lens
let t = _0 + each;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 2]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, [(2, 3), (3, 4), (5, 6)]);
}
#[test]
fn can_combine_prism_with_traversal() {
let array = [Some(1), None, Some(3), None, Some(5)];
// combine a traversal with a lens
let t = each + _Some;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 3, 5]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, [Some(2), None, Some(4), None, Some(6)]);
}
#[test]
fn can_combine_traversal_with_prism() {
let array = Some([1, 2, 3]);
// combine a traversal with a lens
let t = _Some + each;
// traverse
let res = t(array);
assert_eq!(res, vec![1, 2, 3]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, Some([2, 3, 4]));
let array: Option<[i32; 3]> = None;
// traverse
let res = t(array);
assert_eq!(res, vec![]);
// over
let res = t(array, |v| v + 1);
assert_eq!(res, None);
}
}