add tests and bless existing ones

Author: b-naber

src/test/ui/associated-types/issue-59324.rs

@@ -0,0 +1,26 @@
+trait NotFoo {}
+
+pub trait Foo: NotFoo {
+    type OnlyFoo;
+}
+
+pub trait Service {
+    type AssocType;
+}
+
+pub trait ThriftService<Bug: NotFoo>:
+//~^ ERROR the trait bound `Bug: Foo` is not satisfied
+//~| ERROR the trait bound `Bug: Foo` is not satisfied
+    Service<AssocType = <Bug as Foo>::OnlyFoo>
+{
+    fn get_service(
+    //~^ ERROR the trait bound `Bug: Foo` is not satisfied
+    //~| ERROR the trait bound `Bug: Foo` is not satisfied
+        &self,
+    ) -> Self::AssocType;
+}
+
+fn with_factory<H>(factory: dyn ThriftService<()>) {}
+//~^ ERROR the trait bound `(): Foo` is not satisfied
+
+fn main() {}

src/test/ui/associated-types/issue-59324.stderr

@@ -0,0 +1,69 @@
+error[E0277]: the trait bound `Bug: Foo` is not satisfied
+  --> $DIR/issue-59324.rs:11:1
+   |
+LL | / pub trait ThriftService<Bug: NotFoo>:
+LL | |
+LL | |
+LL | |     Service<AssocType = <Bug as Foo>::OnlyFoo>
+...  |
+LL | |     ) -> Self::AssocType;
+LL | | }
+   | |_^ the trait `Foo` is not implemented for `Bug`
+   |
+help: consider further restricting this bound
+   |
+LL | pub trait ThriftService<Bug: NotFoo + Foo>:
+   |                                     +++++
+
+error[E0277]: the trait bound `Bug: Foo` is not satisfied
+  --> $DIR/issue-59324.rs:11:1
+   |
+LL | / pub trait ThriftService<Bug: NotFoo>:
+LL | |
+LL | |
+LL | |     Service<AssocType = <Bug as Foo>::OnlyFoo>
+...  |
+LL | |     ) -> Self::AssocType;
+LL | | }
+   | |_^ the trait `Foo` is not implemented for `Bug`
+   |
+help: consider further restricting this bound
+   |
+LL | pub trait ThriftService<Bug: NotFoo + Foo>:
+   |                                     +++++
+
+error[E0277]: the trait bound `Bug: Foo` is not satisfied
+  --> $DIR/issue-59324.rs:16:5
+   |
+LL | /     fn get_service(
+LL | |
+LL | |
+LL | |         &self,
+LL | |     ) -> Self::AssocType;
+   | |_________________________^ the trait `Foo` is not implemented for `Bug`
+   |
+help: consider further restricting this bound
+   |
+LL | pub trait ThriftService<Bug: NotFoo + Foo>:
+   |                                     +++++
+
+error[E0277]: the trait bound `Bug: Foo` is not satisfied
+  --> $DIR/issue-59324.rs:16:8
+   |
+LL |     fn get_service(
+   |        ^^^^^^^^^^^ the trait `Foo` is not implemented for `Bug`
+   |
+help: consider further restricting this bound
+   |
+LL | pub trait ThriftService<Bug: NotFoo + Foo>:
+   |                                     +++++
+
+error[E0277]: the trait bound `(): Foo` is not satisfied
+  --> $DIR/issue-59324.rs:23:29
+   |
+LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
+   |                             ^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0277`.

src/test/ui/associated-types/issue-67684.rs

@@ -0,0 +1,62 @@
+// check-pass
+
+#![allow(dead_code)]
+
+trait ParseError {
+    type StreamError;
+}
+
+impl<T> ParseError for T {
+    type StreamError = ();
+}
+
+trait Stream {
+    type Item;
+    type Error: ParseError;
+}
+
+trait Parser
+where
+    <Self as Parser>::PartialState: Default,
+{
+    type PartialState;
+    fn parse_mode(_: &Self, _: Self::PartialState) {
+        loop {}
+    }
+}
+
+impl Stream for () {
+    type Item = ();
+    type Error = ();
+}
+
+impl Parser for () {
+    type PartialState = ();
+}
+
+struct AndThen<A, B>(core::marker::PhantomData<(A, B)>);
+
+impl<A, B> Parser for AndThen<A, B>
+where
+    A: Stream,
+    B: Into<<A::Error as ParseError>::StreamError>,
+{
+    type PartialState = ();
+}
+
+fn expr<A>() -> impl Parser
+where
+    A: Stream<Error = <A as Stream>::Item>,
+{
+    AndThen::<A, ()>(core::marker::PhantomData)
+}
+
+fn parse_mode_impl<A>()
+where
+    <A as Stream>::Error: ParseError,
+    A: Stream<Error = <A as Stream>::Item>,
+{
+    Parser::parse_mode(&expr::<A>(), Default::default())
+}
+
+fn main() {}

src/test/ui/associated-types/issue-69398.rs

@@ -0,0 +1,21 @@
+// check-pass
+
+pub trait Foo {
+    type Bar;
+}
+
+pub trait Broken {
+    type Assoc;
+    fn broken(&self) where Self::Assoc: Foo;
+}
+
+impl<T> Broken for T {
+    type Assoc = ();
+    fn broken(&self) where Self::Assoc: Foo {
+        let _x: <Self::Assoc as Foo>::Bar;
+    }
+}
+
+fn main() {
+    let _m: &dyn Broken<Assoc=()> = &();
+}

src/test/ui/associated-types/issue-71113.rs

@@ -0,0 +1,16 @@
+// check-pass
+
+use std::borrow::Cow;
+
+enum _Recursive<'a>
+where
+    Self: ToOwned<Owned=Box<Self>>
+{
+    Variant(MyCow<'a, _Recursive<'a>>),
+}
+
+pub struct Wrapper<T>(T);
+
+pub struct MyCow<'a, T: ToOwned<Owned=Box<T>> + 'a>(Wrapper<Cow<'a, T>>);
+
+fn main() {}

src/test/ui/associated-types/issue-82079.rs

@@ -0,0 +1,121 @@
+// check-pass
+
+mod convenience_operators {
+    use crate::{Op, Relation};
+    use std::ops::AddAssign;
+    use std::ops::Mul;
+
+    impl<C: Op> Relation<C> {
+        pub fn map<F: Fn(C::D) -> D2 + 'static, D2: 'static>(
+            self,
+            f: F,
+        ) -> Relation<impl Op<D = D2, R = C::R>> {
+            self.map_dr(move |x, r| (f(x), r))
+        }
+    }
+
+    impl<K: 'static, V: 'static, C: Op<D = (K, V)>> Relation<C> {
+        pub fn semijoin<C2: Op<D = K, R = R2>, R2, R3: AddAssign<R3>>(
+            self,
+            other: Relation<C2>,
+        ) -> Relation<impl Op<D = C::D, R = R3>>
+        where
+            C::R: Mul<R2, Output = R3>,
+        {
+            self.join(other.map(|x| (x, ()))).map(|(k, x, ())| (k, x))
+        }
+    }
+}
+
+mod core {
+    mod operator {
+        mod join {
+            use super::Op;
+            use crate::core::Relation;
+            use std::ops::{AddAssign, Mul};
+            struct Join<LC, RC> {
+                _left: LC,
+                _right: RC,
+            }
+            impl<
+                    LC: Op<D = (K, LD), R = LR>,
+                    RC: Op<D = (K, RD), R = RR>,
+                    K: 'static,
+                    LD: 'static,
+                    LR: AddAssign<LR> + Mul<RR, Output = OR>,
+                    RD: 'static,
+                    RR: AddAssign<RR>,
+                    OR: AddAssign<OR>,
+                > Op for Join<LC, RC>
+            {
+                type D = (K, LD, RD);
+                type R = OR;
+            }
+            impl<K: 'static, D: 'static, C: Op<D = (K, D)>> Relation<C> {
+                pub fn join<C2: Op<D = (K, D2)>, D2: 'static, OR: AddAssign<OR>>(
+                    self,
+                    other: Relation<C2>,
+                ) -> Relation<impl Op<D = (K, D, D2), R = OR>>
+                where
+                    C::R: Mul<C2::R, Output = OR>,
+                {
+                    Relation {
+                        inner: Join {
+                            _left: self.inner,
+                            _right: other.inner,
+                        },
+                    }
+                }
+            }
+        }
+        mod map {
+            use super::Op;
+            use crate::core::Relation;
+            use std::ops::AddAssign;
+            struct Map<C, MF> {
+                _inner: C,
+                _op: MF,
+            }
+            impl<
+                    D1,
+                    R1,
+                    D2: 'static,
+                    R2: AddAssign<R2>,
+                    C: Op<D = D1, R = R1>,
+                    MF: Fn(D1, R1) -> (D2, R2),
+                > Op for Map<C, MF>
+            {
+                type D = D2;
+                type R = R2;
+            }
+            impl<C: Op> Relation<C> {
+                pub fn map_dr<F: Fn(C::D, C::R) -> (D2, R2), D2: 'static, R2: AddAssign<R2>>(
+                    self,
+                    f: F,
+                ) -> Relation<impl Op<D = D2, R = R2>> {
+                    Relation {
+                        inner: Map {
+                            _inner: self.inner,
+                            _op: f,
+                        },
+                    }
+                }
+            }
+        }
+        use std::ops::AddAssign;
+        pub trait Op {
+            type D: 'static;
+            type R: AddAssign<Self::R>;
+        }
+    }
+    pub use self::operator::Op;
+    #[derive(Clone)]
+    pub struct Relation<C> {
+        inner: C,
+    }
+}
+
+use self::core::Op;
+pub use self::core::Relation;
+
+fn main() {}

src/test/ui/associated-types/issue-88856.rs

@@ -0,0 +1,32 @@
+// check-pass
+
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+pub trait Trait{
+    type R;
+    fn func(self)->Self::R;
+}
+
+pub struct TraitImpl<const N:usize>(pub i32);
+
+impl<const N:usize> Trait for TraitImpl<N>
+where [();N/2]:,
+{
+    type R = Self;
+    fn func(self)->Self::R {
+        self
+    }
+}
+
+fn sample<P,Convert>(p:P,f:Convert) -> i32
+where
+    P:Trait,Convert:Fn(P::R)->i32
+{
+    f(p.func())
+}
+
+fn main() {
+    let t = TraitImpl::<10>(4);
+    sample(t,|x|x.0);
+}

src/test/ui/associated-types/issue-91234.rs

@@ -0,0 +1,13 @@
+// check-pass
+
+struct Struct;
+
+trait Trait {
+    type Type;
+}
+
+enum Enum<'a> where &'a Struct: Trait {
+    Variant(<&'a Struct as Trait>::Type)
+}
+
+fn main() {}