diff options
Diffstat (limited to 'library/core/tests/iter/traits/iterator.rs')
| -rw-r--r-- | library/core/tests/iter/traits/iterator.rs | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/library/core/tests/iter/traits/iterator.rs b/library/core/tests/iter/traits/iterator.rs index 9eebfb1f1..995bbf0e2 100644 --- a/library/core/tests/iter/traits/iterator.rs +++ b/library/core/tests/iter/traits/iterator.rs @@ -1,3 +1,4 @@ +use core::cmp::Ordering; use core::num::NonZeroUsize; /// A wrapper struct that implements `Eq` and `Ord` based on the wrapped @@ -371,11 +372,39 @@ fn test_by_ref() { #[test] fn test_is_sorted() { + // Tests on integers assert!([1, 2, 2, 9].iter().is_sorted()); assert!(![1, 3, 2].iter().is_sorted()); assert!([0].iter().is_sorted()); - assert!(std::iter::empty::<i32>().is_sorted()); + assert!([0, 0].iter().is_sorted()); + assert!(core::iter::empty::<i32>().is_sorted()); + + // Tests on floats + assert!([1.0f32, 2.0, 2.0, 9.0].iter().is_sorted()); + assert!(![1.0f32, 3.0f32, 2.0f32].iter().is_sorted()); + assert!([0.0f32].iter().is_sorted()); + assert!([0.0f32, 0.0f32].iter().is_sorted()); + // Test cases with NaNs + assert!([f32::NAN].iter().is_sorted()); + assert!(![f32::NAN, f32::NAN].iter().is_sorted()); assert!(![0.0, 1.0, f32::NAN].iter().is_sorted()); + // Tests from <https://github.com/rust-lang/rust/pull/55045#discussion_r229689884> + assert!(![f32::NAN, f32::NAN, f32::NAN].iter().is_sorted()); + assert!(![1.0, f32::NAN, 2.0].iter().is_sorted()); + assert!(![2.0, f32::NAN, 1.0].iter().is_sorted()); + assert!(![2.0, f32::NAN, 1.0, 7.0].iter().is_sorted()); + assert!(![2.0, f32::NAN, 1.0, 0.0].iter().is_sorted()); + assert!(![-f32::NAN, -1.0, 0.0, 1.0, f32::NAN].iter().is_sorted()); + assert!(![f32::NAN, -f32::NAN, -1.0, 0.0, 1.0].iter().is_sorted()); + assert!(![1.0, f32::NAN, -f32::NAN, -1.0, 0.0].iter().is_sorted()); + assert!(![0.0, 1.0, f32::NAN, -f32::NAN, -1.0].iter().is_sorted()); + assert!(![-1.0, 0.0, 1.0, f32::NAN, -f32::NAN].iter().is_sorted()); + + // Tests for is_sorted_by + assert!(![6, 2, 8, 5, 1, -60, 1337].iter().is_sorted()); + assert!([6, 2, 8, 5, 1, -60, 1337].iter().is_sorted_by(|_, _| Some(Ordering::Less))); + + // Tests for is_sorted_by_key assert!([-2, -1, 0, 3].iter().is_sorted()); assert!(![-2i32, -1, 0, 3].iter().is_sorted_by_key(|n| n.abs())); assert!(!["c", "bb", "aaa"].iter().is_sorted()); |