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Test drop_impl_foreign_adt

Source location: tests/drop.rs:214

#[test]
fn drop_impl_foreign_adt() {
    FormalityTest::new(crates![
        crate a {
            struct MyStruct {
                value: u32,
            }
        },
        crate b {
            impl Drop for MyStruct {}
        }
    ])
    .err(expect_test::expect![[r#"
        the rule "Drop impl is always applicable" at (impls.rs) failed because
          `Drop` may only be implemented for types defined in the current crate: `MyStruct` is defined in crate `a` but the impl is in crate `b`"#]])
}

Rules proved (0)

This test records no positive coverage.

Premises failed (4)

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.

JudgmentRulePremiseAll tests of this premise
check_drop_impl_always_applicableDrop impl is always applicablecheck_drop_impl_in_defining_crate(program, adt_i… (line 349)1 test
check_all_cratescheck all prefixesfor_all(i in 0..crates.len()) (let program = cra… (line 51, blamed at line 53)not counted by the judgment view
check_cratecheck cratefor_all(item in &c.items) (check_crate_item(prog… (line 72, blamed at line 73)not counted by the judgment view
check_crate_itemtrait implcheck_drop_impl_always_applicable(program, v, cr… (line 194)5 tests

Proof trees

Failed proof tree