Test foo_crate_cannot_assume_CoreStruct_does_not_impl_CoreTrait

Source location: tests/coherence_overlap.rs:162

#[test]
fn foo_crate_cannot_assume_CoreStruct_does_not_impl_CoreTrait() {
    FormalityTest::new(crates![crate core {
        trait CoreTrait {}
        struct CoreStruct {}
    },
    crate foo {
        trait FooTrait {}
        impl<T> FooTrait for T where T: CoreTrait {}
        impl FooTrait for CoreStruct {}
    }])
    .err(expect_test::expect![[r#"
            the rule "check_coherence" at (coherence.rs) failed because
              impls may overlap:
              impl <ty> FooTrait for ^ty0_0 where ^ty0_0 : CoreTrait { }
              impl FooTrait for CoreStruct { }"#]])
}

Rules proved (0)

This test records no positive coverage.

Premises failed (3)

The last column links to the premise’s page when the judgment view counts this failure against that premise. It does not when the premise is read as infallible, or when the failure was blamed inside a multi-line premise that carries no record on its own first line.

Proof trees