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Add a test for an async function.

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This commit is contained in:
Kyle Huey 2020-08-22 21:36:39 -07:00
parent 4972989b61
commit c1d2b9376a
3 changed files with 20 additions and 6 deletions
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7
tests/ui/async_yields_async.fixed
View file

@ -22,6 +22,12 @@ fn custom_future_type_ctor() -> CustomFutureType {
CustomFutureType
}
async fn f() -> CustomFutureType {
// Don't warn for functions since you have to explicitly declare their
// return types.
CustomFutureType
}
#[rustfmt::skip]
fn main() {
let _f = {
@ -58,4 +64,5 @@ fn main() {
CustomFutureType.await
};
let _n = async || custom_future_type_ctor();
let _o = async || f();
}

7
tests/ui/async_yields_async.rs
View file

@ -22,6 +22,12 @@ fn custom_future_type_ctor() -> CustomFutureType {
CustomFutureType
}
async fn f() -> CustomFutureType {
// Don't warn for functions since you have to explicitly declare their
// return types.
CustomFutureType
}
#[rustfmt::skip]
fn main() {
let _f = {
@ -58,4 +64,5 @@ fn main() {
CustomFutureType
};
let _n = async || custom_future_type_ctor();
let _o = async || f();
}

12
tests/ui/async_yields_async.stderr
View file

@ -1,5 +1,5 @@
error: an async construct yields a type which is itself awaitable
--> $DIR/async_yields_async.rs:34:9
--> $DIR/async_yields_async.rs:40:9
|
LL | let _h = async {
| ____________________-
@ -20,7 +20,7 @@ LL | }.await
|
error: an async construct yields a type which is itself awaitable
--> $DIR/async_yields_async.rs:39:9
--> $DIR/async_yields_async.rs:45:9
|
LL | let _i = async {
| ____________________-
@ -33,7 +33,7 @@ LL | | };
| |_____- outer async construct
error: an async construct yields a type which is itself awaitable
--> $DIR/async_yields_async.rs:45:9
--> $DIR/async_yields_async.rs:51:9
|
LL | let _j = async || {
| _______________________-
@ -53,7 +53,7 @@ LL | }.await
|
error: an async construct yields a type which is itself awaitable
--> $DIR/async_yields_async.rs:50:9
--> $DIR/async_yields_async.rs:56:9
|
LL | let _k = async || {
| _______________________-
@ -66,7 +66,7 @@ LL | | };
| |_____- outer async construct
error: an async construct yields a type which is itself awaitable
--> $DIR/async_yields_async.rs:52:23
--> $DIR/async_yields_async.rs:58:23
|
LL | let _l = async || CustomFutureType;
| ^^^^^^^^^^^^^^^^
@ -76,7 +76,7 @@ LL | let _l = async || CustomFutureType;
| help: consider awaiting this value: `CustomFutureType.await`
error: an async construct yields a type which is itself awaitable
--> $DIR/async_yields_async.rs:58:9
--> $DIR/async_yields_async.rs:64:9
|
LL | let _m = async || {
| _______________________-