Negative coverage: prove_predicate / const has ty / premise prove_after(decls, c, assumptions, AtomicPredicate::equals(ty_constant, ty)) => c
Premise at line 156. Observed failure causes: failed_judgment.
const has ty| Line | Coverage | Source |
|---|---|---|
| 155 | 1 | (prove_const_has_type(decls, env, assumptions, constant) => (ty_constant, c)) |
| 156 | 1 | (prove_after(decls, c, assumptions, AtomicPredicate::equals(ty_constant, ty)) => c) |
| ──────── ("const has ty") | ||
| 158 | 4 | (prove_predicate(decls, env, assumptions, AtomicPredicate::ConstHasType(constant, ty)) => c) |
1 test failed proving this premise:
Source location: tests/consts.rs:36 (all coverage from this test)
#[test]
fn mismatch() {
FormalityTest::new(crates![crate Foo {
trait Foo<const C> where type_of_const C is bool {}
impl Foo<u32(42)> for u32 {}
}]).err(expect_test::expect![[r#"
crates/formality-rust/src/prove/prove_normalize.rs:22:1: no applicable rules for prove_normalize { p: u32, assumptions: {}, env: Env { variables: [], bias: Soundness, pending: [], allow_pending_outlives: false } }
crates/formality-rust/src/prove/prove_normalize.rs:22:1: no applicable rules for prove_normalize { p: bool, assumptions: {}, env: Env { variables: [], bias: Soundness, pending: [], allow_pending_outlives: false } }
the rule "trait implied bound" at (prove_predicate.rs) failed because
expression evaluated to an empty collection: `decls.trait_invariants()`"#]])
}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:27prove failedfunction.rs:250args
rulefunction.rs:250prove_predicate_list failedprove_predicate_list.rs:8args
rule "some"prove_predicate_list.rs:26prove_predicate failedprove_predicate.rs:22args
rule "positive impl"prove_predicate.rs:78prove_after failedprove_after.rs:8args
rule "prove_after"prove_after.rs:19prove failedprove_after.rs:19args
ruleprove_after.rs:19prove_predicate_list failedprove_predicate_list.rs:8args
rule "some"prove_predicate_list.rs:26prove_predicate failedprove_predicate.rs:22args
rule "const has ty"prove_predicate.rs:156prove_after failedprove_after.rs:8args
rule "prove_after"prove_after.rs:19prove failedprove_after.rs:19args
ruleprove_after.rs:19prove_predicate_list failedprove_predicate_list.rs:8args
rule "some"prove_predicate_list.rs:26prove_predicate failedprove_predicate.rs:22args
rule "eq"prove_predicate.rs:115prove_eq failedprove_eq.rs:23args
rule "normalize-l"prove_eq.rs:68prove_normalize failedprove_normalize.rs:22args
rule "symmetric"prove_eq.rs:38prove_eq failedprove_eq.rs:23args
rule "normalize-l"prove_eq.rs:68prove_normalize failedprove_normalize.rs:22args