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 | check_safety_matches(&trait_decl, &trait_impl) =… (line 33) | 2 tests |
| check_safety_matches | safety matches | if trait_decl.safety == trait_impl.safety (line 84) | 2 tests |
| 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_trait_impl(program, v, crate_id) => () (line 193) | 10 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:193check_trait_impl failedimpls.rs:14rule "check_trait_impl"impls.rs:33check_safety_matches failedimpls.rs:76args
rule "safety matches"impls.rs:84 (failed: if_false)