Test safe_trait_mismatch
Source location: tests/decl_safety.rs:138
#[test]
fn safe_trait_mismatch() {
FormalityTest::new(crates![crate baguette {
trait Foo {}
unsafe impl Foo for u32 {}
}])
.rustc_err(expect_test::expect![[r#"
error[E0199]: implementing the trait `Foo` is not unsafe
--> lib.rs
|
3 | unsafe impl Foo for u32 {}
| ^^^^^^^^^^^^^^^^^^^^^^^
|
help: remove `unsafe` from this trait implementation
|
3 - unsafe impl Foo for u32 {}
3 + impl Foo for u32 {}
|
For more information about this error, try `rustc --explain E0199`.
error: could not compile `baguette` (lib) due to 1 previous error
"#]])
.err(expect_test::expect![[r#"
the rule "safety matches" at (impls.rs) failed because
condition evaluated to false: `trait_decl.safety == trait_impl.safety`"#]])
}Rules proved (0)
This test records no positive coverage.
Premises failed (5)
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_trait_impl | check_trait_impl | scope(enter_universally(Env::default(), binder) … (line 23, blamed at line 32) | not counted by the judgment view |
| check_safety_matches | safety matches | if trait_decl.safety == trait_impl.safety (line 82) | 2 tests |
| check_all_crates | check all prefixes | for_all(i in 0..crates.len()) (let program = cra… (line 52, blamed at line 54) | not counted by the judgment view |
| check_crate | check crate | for_all(item in &c.items) (check_crate_item(prog… (line 73, blamed at line 74) | not counted by the judgment view |
| check_crate_item | trait impl | check_trait_impl(program, v, crate_id) => () (line 194) | 16 tests |
Proof trees
Failed proof tree
check_all_crates failedmod.rs:42args
rule "check all prefixes"mod.rs:54check_crate failedmod.rs:61args
rule "check crate"mod.rs:74check_crate_item failedmod.rs:179rule "trait impl"mod.rs:194check_trait_impl failedimpls.rs:14rule "check_trait_impl"impls.rs:32check_safety_matches failedimpls.rs:74args
rule "safety matches"impls.rs:82 (failed: if_false)