move 'test zip ...' tests
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@ -376,6 +376,101 @@ fn test_zip_next_back_side_effects_exhausted() {
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assert_eq!(b, vec![200, 300, 400]);
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}
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#[derive(Debug)]
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struct CountClone(Cell<i32>);
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fn count_clone() -> CountClone { CountClone(Cell::new(0)) }
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impl PartialEq<i32> for CountClone {
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fn eq(&self, rhs: &i32) -> bool {
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self.0.get() == *rhs
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}
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}
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impl Clone for CountClone {
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fn clone(&self) -> Self {
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let ret = CountClone(self.0.clone());
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let n = self.0.get();
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self.0.set(n + 1);
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ret
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}
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}
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#[test]
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fn test_zip_cloned_sideffectful() {
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let xs = [count_clone(), count_clone(), count_clone(), count_clone()];
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let ys = [count_clone(), count_clone()];
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for _ in xs.iter().cloned().zip(ys.iter().cloned()) { }
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assert_eq!(&xs, &[1, 1, 1, 0][..]);
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assert_eq!(&ys, &[1, 1][..]);
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let xs = [count_clone(), count_clone()];
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let ys = [count_clone(), count_clone(), count_clone(), count_clone()];
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for _ in xs.iter().cloned().zip(ys.iter().cloned()) { }
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assert_eq!(&xs, &[1, 1][..]);
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assert_eq!(&ys, &[1, 1, 0, 0][..]);
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}
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#[test]
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fn test_zip_map_sideffectful() {
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let mut xs = [0; 6];
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let mut ys = [0; 4];
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for _ in xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1)) { }
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assert_eq!(&xs, &[1, 1, 1, 1, 1, 0]);
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assert_eq!(&ys, &[1, 1, 1, 1]);
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let mut xs = [0; 4];
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let mut ys = [0; 6];
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for _ in xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1)) { }
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assert_eq!(&xs, &[1, 1, 1, 1]);
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assert_eq!(&ys, &[1, 1, 1, 1, 0, 0]);
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}
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#[test]
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fn test_zip_map_rev_sideffectful() {
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let mut xs = [0; 6];
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let mut ys = [0; 4];
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{
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let mut it = xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1));
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it.next_back();
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}
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assert_eq!(&xs, &[0, 0, 0, 1, 1, 1]);
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assert_eq!(&ys, &[0, 0, 0, 1]);
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let mut xs = [0; 6];
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let mut ys = [0; 4];
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{
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let mut it = xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1));
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(&mut it).take(5).count();
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it.next_back();
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}
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assert_eq!(&xs, &[1, 1, 1, 1, 1, 1]);
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assert_eq!(&ys, &[1, 1, 1, 1]);
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}
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#[test]
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fn test_zip_nested_sideffectful() {
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let mut xs = [0; 6];
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let ys = [0; 4];
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{
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// test that it has the side effect nested inside enumerate
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let it = xs.iter_mut().map(|x| *x = 1).enumerate().zip(&ys);
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it.count();
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}
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assert_eq!(&xs, &[1, 1, 1, 1, 1, 0]);
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}
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#[test]
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fn test_zip_nth_back_side_effects_exhausted() {
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let mut a = Vec::new();
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@ -1,103 +0,0 @@
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// run-pass
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// Test that .zip() specialization preserves side effects
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// in sideeffectful iterator adaptors.
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use std::cell::Cell;
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#[derive(Debug)]
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struct CountClone(Cell<i32>);
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fn count_clone() -> CountClone { CountClone(Cell::new(0)) }
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impl PartialEq<i32> for CountClone {
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fn eq(&self, rhs: &i32) -> bool {
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self.0.get() == *rhs
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}
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}
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impl Clone for CountClone {
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fn clone(&self) -> Self {
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let ret = CountClone(self.0.clone());
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let n = self.0.get();
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self.0.set(n + 1);
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ret
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}
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}
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fn test_zip_cloned_sideffectful() {
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let xs = [count_clone(), count_clone(), count_clone(), count_clone()];
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let ys = [count_clone(), count_clone()];
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for _ in xs.iter().cloned().zip(ys.iter().cloned()) { }
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assert_eq!(&xs, &[1, 1, 1, 0][..]);
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assert_eq!(&ys, &[1, 1][..]);
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let xs = [count_clone(), count_clone()];
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let ys = [count_clone(), count_clone(), count_clone(), count_clone()];
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for _ in xs.iter().cloned().zip(ys.iter().cloned()) { }
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assert_eq!(&xs, &[1, 1][..]);
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assert_eq!(&ys, &[1, 1, 0, 0][..]);
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}
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fn test_zip_map_sideffectful() {
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let mut xs = [0; 6];
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let mut ys = [0; 4];
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for _ in xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1)) { }
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assert_eq!(&xs, &[1, 1, 1, 1, 1, 0]);
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assert_eq!(&ys, &[1, 1, 1, 1]);
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let mut xs = [0; 4];
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let mut ys = [0; 6];
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for _ in xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1)) { }
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assert_eq!(&xs, &[1, 1, 1, 1]);
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assert_eq!(&ys, &[1, 1, 1, 1, 0, 0]);
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}
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fn test_zip_map_rev_sideffectful() {
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let mut xs = [0; 6];
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let mut ys = [0; 4];
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{
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let mut it = xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1));
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it.next_back();
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}
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assert_eq!(&xs, &[0, 0, 0, 1, 1, 1]);
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assert_eq!(&ys, &[0, 0, 0, 1]);
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let mut xs = [0; 6];
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let mut ys = [0; 4];
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{
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let mut it = xs.iter_mut().map(|x| *x += 1).zip(ys.iter_mut().map(|y| *y += 1));
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(&mut it).take(5).count();
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it.next_back();
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}
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assert_eq!(&xs, &[1, 1, 1, 1, 1, 1]);
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assert_eq!(&ys, &[1, 1, 1, 1]);
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}
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fn test_zip_nested_sideffectful() {
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let mut xs = [0; 6];
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let ys = [0; 4];
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{
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// test that it has the side effect nested inside enumerate
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let it = xs.iter_mut().map(|x| *x = 1).enumerate().zip(&ys);
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it.count();
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}
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assert_eq!(&xs, &[1, 1, 1, 1, 1, 0]);
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}
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fn main() {
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test_zip_cloned_sideffectful();
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test_zip_map_sideffectful();
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test_zip_map_rev_sideffectful();
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test_zip_nested_sideffectful();
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}
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