Add tests and error messages
This commit is contained in:
Michael Goulet
parent
0308d4ad18
commit
104aacb49f
17 changed files with 339 additions and 14 deletions
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// edition: 2021
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#![feature(return_type_notation, async_fn_in_trait)]
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//~^ WARN the feature `return_type_notation` is incomplete
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//~| WARN the feature `async_fn_in_trait` is incomplete
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trait Trait {
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async fn method() {}
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}
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fn foo<T: Trait<method(i32): Send>>() {}
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//~^ ERROR argument types not allowed with return type notation
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fn bar<T: Trait<method() -> (): Send>>() {}
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//~^ ERROR return type not allowed with return type notation
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fn main() {}
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warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/bad-inputs-and-output.rs:3:12
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/bad-inputs-and-output.rs:3:34
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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error: argument types not allowed with return type notation
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--> $DIR/bad-inputs-and-output.rs:11:23
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LL | fn foo<T: Trait<method(i32): Send>>() {}
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| ^^^^^ help: remove the input types: `()`
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error: return type not allowed with return type notation
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--> $DIR/bad-inputs-and-output.rs:14:25
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LL | fn bar<T: Trait<method() -> (): Send>>() {}
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| ^^^^^^ help: remove the return type
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error: aborting due to 2 previous errors; 2 warnings emitted
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// revisions: with without
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// edition: 2021
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//[with] check-pass
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#![feature(return_type_notation, async_fn_in_trait)]
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//~^ WARN the feature `return_type_notation` is incomplete
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//~| WARN the feature `async_fn_in_trait` is incomplete
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trait Foo {
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async fn method() -> Result<(), ()>;
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}
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async fn foo<T: Foo>() -> Result<(), ()> {
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T::method().await?;
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Ok(())
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}
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fn is_send(_: impl Send) {}
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fn test<
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#[cfg(with)] T: Foo<method(): Send>,
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#[cfg(without)] T: Foo,
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>() {
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is_send(foo::<T>());
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//[without]~^ ERROR future cannot be sent between threads safely
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}
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fn main() {}
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warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/basic.rs:5:12
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/basic.rs:5:34
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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warning: 2 warnings emitted
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warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/basic.rs:5:12
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/basic.rs:5:34
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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error: future cannot be sent between threads safely
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--> $DIR/basic.rs:24:13
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LL | is_send(foo::<T>());
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| ^^^^^^^^^^ future returned by `foo` is not `Send`
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= help: within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `impl Future<Output = Result<(), ()>>`
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note: future is not `Send` as it awaits another future which is not `Send`
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--> $DIR/basic.rs:14:5
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LL | T::method().await?;
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| ^^^^^^^^^^^ await occurs here on type `impl Future<Output = Result<(), ()>>`, which is not `Send`
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note: required by a bound in `is_send`
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--> $DIR/basic.rs:18:20
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LL | fn is_send(_: impl Send) {}
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| ^^^^ required by this bound in `is_send`
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error: aborting due to previous error; 2 warnings emitted
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// edition: 2021
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#![feature(return_type_notation, async_fn_in_trait)]
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//~^ WARN the feature `return_type_notation` is incomplete
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//~| WARN the feature `async_fn_in_trait` is incomplete
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use std::future::Future;
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trait Trait {
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async fn method() {}
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}
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fn test<T: Trait<method() = Box<dyn Future<Output = ()>>>>() {}
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//~^ ERROR return type notation is not allowed to use type equality
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fn main() {}
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warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/equality.rs:3:12
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/equality.rs:3:34
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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error: return type notation is not allowed to use type equality
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--> $DIR/equality.rs:13:18
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LL | fn test<T: Trait<method() = Box<dyn Future<Output = ()>>>>() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: aborting due to previous error; 2 warnings emitted
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// edition: 2021
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#![feature(return_type_notation, async_fn_in_trait)]
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//~^ WARN the feature `return_type_notation` is incomplete
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//~| WARN the feature `async_fn_in_trait` is incomplete
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trait Trait {
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async fn method() {}
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}
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fn bar<T: Trait<methid(): Send>>() {}
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//~^ ERROR cannot find associated function `methid` in trait `Trait`
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fn main() {}
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warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/missing.rs:3:12
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/missing.rs:3:34
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LL | #![feature(return_type_notation, async_fn_in_trait)]
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| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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error: cannot find associated function `methid` in trait `Trait`
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--> $DIR/missing.rs:11:17
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LL | fn bar<T: Trait<methid(): Send>>() {}
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| ^^^^^^^^^^^^^^
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error: aborting due to previous error; 2 warnings emitted
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#![feature(return_type_notation)]
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//~^ WARN the feature `return_type_notation` is incomplete
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trait Trait {
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fn method() {}
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}
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fn test<T: Trait<method(): Send>>() {}
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//~^ ERROR return type notation used on function that is not `async` and does not return `impl Trait`
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fn main() {}
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warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/non-rpitit.rs:1:12
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LL | #![feature(return_type_notation)]
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
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= note: `#[warn(incomplete_features)]` on by default
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error: return type notation used on function that is not `async` and does not return `impl Trait`
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--> $DIR/non-rpitit.rs:8:18
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LL | fn method() {}
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| ----------- this function must be `async` or return `impl Trait`
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...
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LL | fn test<T: Trait<method(): Send>>() {}
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| ^^^^^^^^^^^^^^
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= note: function returns `()`, which is not compatible with associated type return bounds
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error: aborting due to previous error; 1 warning emitted
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