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Diffstat (limited to 'third_party/rust/pin-utils/tests/projection.rs')
-rw-r--r-- | third_party/rust/pin-utils/tests/projection.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/third_party/rust/pin-utils/tests/projection.rs b/third_party/rust/pin-utils/tests/projection.rs new file mode 100644 index 0000000000..492c26d9a8 --- /dev/null +++ b/third_party/rust/pin-utils/tests/projection.rs @@ -0,0 +1,27 @@ +use pin_utils::{unsafe_pinned, unsafe_unpinned, pin_mut}; +use std::pin::Pin; +use std::marker::Unpin; + +struct Foo<T1, T2> { + field1: T1, + field2: T2, +} + +impl<T1, T2> Foo<T1, T2> { + unsafe_pinned!(field1: T1); + unsafe_unpinned!(field2: T2); +} + +impl<T1: Unpin, T2> Unpin for Foo<T1, T2> {} // Conditional Unpin impl + +#[test] +fn projection() { + let foo = Foo { field1: 1, field2: 2 }; + pin_mut!(foo); + + let x1: Pin<&mut i32> = foo.as_mut().field1(); + assert_eq!(*x1, 1); + + let x2: &mut i32 = foo.as_mut().field2(); + assert_eq!(*x2, 2); +} |