Test drop_impl_for_non_adt
Source location: tests/drop.rs:227
#[test]
fn drop_impl_for_non_adt() {
FormalityTest::new(crates![
crate Foo {
impl Drop for u32 {}
}
])
.err(expect_test::expect![[r#"
the rule "Drop impl is always applicable" at (impls.rs) failed because
Drop impl self type must be a struct or enum, got `u32`"#]])
}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.
| Judgment | Rule | Premise | All tests of this premise |
|---|---|---|---|
| check_drop_impl_always_applicable | Drop impl is always applicable | let adt_id = drop_impl_adt_id(&trait_impl)? (line 347) | 1 test |
| check_all_crates | check all prefixes | for_all(i in 0..crates.len()) (let program = cra… (line 51, blamed at line 53) | not counted by the judgment view |
| check_crate | check crate | for_all(item in &c.items) (check_crate_item(prog… (line 72, blamed at line 73) | not counted by the judgment view |
| check_crate_item | trait impl | check_drop_impl_always_applicable(program, v, cr… (line 194) | 5 tests |
Proof trees
Failed proof tree
check_all_crates failedmod.rs:41args
rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60args
rule "check crate"mod.rs:73check_crate_item failedmod.rs:178rule "trait impl"mod.rs:194check_drop_impl_always_applicable failedimpls.rs:328rule "Drop impl is always applicable"impls.rs:347 (failed: inapplicable)