diff options
Diffstat (limited to 'third_party/rust/rental/tests/target_ty_hack.rs')
-rw-r--r-- | third_party/rust/rental/tests/target_ty_hack.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/rust/rental/tests/target_ty_hack.rs b/third_party/rust/rental/tests/target_ty_hack.rs new file mode 100644 index 0000000000..d98bd0d7b5 --- /dev/null +++ b/third_party/rust/rental/tests/target_ty_hack.rs @@ -0,0 +1,54 @@ +#[macro_use] +extern crate rental; + + +type MyVec<T> = Vec<T>; + + +rental! { + pub mod rent_vec_slice { + use super::*; + + #[rental] + pub struct OwnedSlice { + #[target_ty = "[u8]"] + buffer: MyVec<u8>, + slice: &'buffer [u8], + } + + #[rental_mut] + pub struct OwnedMutSlice { + #[target_ty = "[u8]"] + buffer: MyVec<u8>, + slice: &'buffer mut [u8], + } + } +} + + +#[test] +fn new() { + let vec = vec![1, 2, 3]; + let _ = rent_vec_slice::OwnedSlice::new(vec, |slice| slice); +} + + +#[test] +fn read() { + let vec = vec![1, 2, 3]; + let rvec = rent_vec_slice::OwnedSlice::new(vec, |slice| slice); + + assert_eq!(rvec.rent(|slice| slice[1]), 2); + assert_eq!(rvec.rent(|slice| slice[1]), rvec.rent(|slice| slice[1])); +} + + +#[test] +fn write() { + let vec = vec![1, 2, 3]; + let mut rvec = rent_vec_slice::OwnedMutSlice::new(vec, |slice| slice); + + rvec.rent_mut(|slice| slice[1] = 4); + assert_eq!(rvec.rent(|slice| slice[1]), 4); + assert_eq!(rvec.rent(|slice| slice[1]), rvec.rent(|slice| slice[1])); +} |