Test drop_impl_missing_drop_fn

Source location: tests/drop.rs:159

#[test]
fn drop_impl_missing_drop_fn() {
    FormalityTest::new(crates![
        crate Foo {
            struct MyStruct {
                value: u32,
            }

            impl Drop for MyStruct {}
        }
    ])
    .rustc_err(expect_test::expect![[r#"
        error[E0046]: not all trait items implemented, missing: `drop`
         --> lib.rs
          |
        5 | impl Drop for MyStruct {}
          | ^^^^^^^^^^^^^^^^^^^^^^ missing `drop` in implementation
          |
          = help: implement the missing item: `fn drop(&mut self) { todo!() }`

        For more information about this error, try `rustc --explain E0046`.
        error: could not compile `Foo` (lib) due to 1 previous error
    "#]])
    .err(expect_test::expect![[r#"
        the rule "check_trait_impl" at (impls.rs) failed because
          not all trait items implemented, missing: `drop`"#]])
}

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.

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