Positive coverage: prove_wc / forall

12 tests exercised this rule:

Source location: crates/formality-rust/src/prove/prove/test/eq_assumptions.rs:15

#[test]
fn test_a() {
    test_prove(
        Program::empty(),
        term("{} => {for<T, U> if {T = u32, U = Vec<T>} U = Vec<u32>}"),
    )
    .assert_ok(expect!["{Constraints { env: Env { variables: [], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]);
}

Source location: crates/formality-rust/src/prove/prove/test/eq_assumptions.rs:24

#[test]
fn test_b() {
    test_prove(
        Program::empty(),
        term("exists<A> {} => {for<T, U> if {T = u32, U = Vec<T>} A = U}"),
    )
    .assert_ok(expect!["{Constraints { env: Env { variables: [?ty_2, ?ty_1], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {?ty_1 => Vec<u32>, ?ty_2 => u32} }}"]);
}

Source location: crates/formality-rust/src/prove/prove/test/eq_assumptions.rs:33

#[test]
fn test_normalize_assoc_ty() {
    test_prove(
        Program::empty(),
        term("{} => {for<T> if { <T as Iterator>::Item = u32 } <T as Iterator>::Item = u32}"),
    )
    .assert_ok(expect!["{Constraints { env: Env { variables: [], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]);
}

Source location: crates/formality-rust/src/prove/prove/test/eq_partial_eq.rs:25

#[test]
fn eq_implies_partial_eq() {
    let assumptions: Wcs = Wcs::t();
    let goal: Wc = term("for<T> if {Eq(T)} PartialEq(T)");
    let constraints = prove(decls(), (), assumptions, goal);
    constraints.assert_ok(
    expect!["{Constraints { env: Env { variables: [], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]);
}

Source location: crates/formality-rust/src/prove/prove/test/universes.rs:37

#[test]
fn for_t_exists_u() {
    let decls = Program {
        crates: Arc::new(Program::program_from_items(vec![
            term("trait Test<T> where {}"),
            term("impl<X> Test<X> for X {}"),
        ])),
        ..Program::empty()
    };

    test_prove(decls, term("{} => {for<T> Test(T, T)}")).assert_ok(expect!["{Constraints { env: Env { variables: [], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]);
}

Source location: tests/basic_tests.rs:74

#[test]
fn basic_where_clauses_pass() {
    FormalityTest::new(crates![crate core {
        #![feature(non_lifetime_binders)]
        trait A<T> where T: B { }

        trait B { }

        trait WellFormed where for<T> u32: A<T> { }

        impl <T> B for T {}
    }])
    .skip_execute()
    .ok()
}

Source location: tests/basic_tests.rs:121

fn foo() -> () where for<T> u32: A<T> { trusted }

impl <T> B for T {}
}])
p_execute()
)
}

#[test]
ifetime_binder_in_fn_where_clause_fail() {
alityTest::new(crates![crate core {
trait A<T> where T: B { }

trait B { }

fn foo() -> () where for<T> u32: A<T> { trusted }
}])
(expect_test::expect![[r#"
the rule "check crate" at (mod.rs) failed because
  non lifetime binders require #![feature(non_lifetime_binders)]"#]])
}

#[test]
ifetime_binder_in_trait_impl_where_clause_pass() {
alityTest::new(crates![crate core {
#![feature(non_lifetime_binders)]
trait A<T> where T: B { }

trait B { }

impl<T> B for T where for<U> u32: A<U> { }
}])
p_execute()
)
}

#[test]
ifetime_binder_in_trait_impl_where_clause_fail() {
alityTest::new(crates![crate core {
trait A<T> where T: B { }

trait B { }

impl<T> B for T where for<U> u32: A<U> { }
}])
(expect_test::expect![[r#"
the rule "check crate" at (mod.rs) failed because
  non lifetime binders require #![feature(non_lifetime_binders)]"#]])
}

#[test]
ifetime_binder_in_neg_trait_impl_where_clause_pass() {
alityTest::new(crates![crate core {
#![feature(non_lifetime_binders)]
trait A<T> where T: B { }

trait B { }

impl<T> !A<T> for u32 where for<U> u32: A<U> { }

impl <T> B for T {}
}])
p_execute()
)
}

#[test]
ifetime_binder_in_neg_trait_impl_where_clause_fail() {
alityTest::new(crates![crate core {
trait A<T> where T: B { }

trait B { }

impl<T> !A<T> for u32 where for<U> u32: A<U> { }
}])
(expect_test::expect![[r#"
the rule "check crate" at (mod.rs) failed because
  non lifetime binders require #![feature(non_lifetime_binders)]"#]])
}

#[test]
ifetime_binder_in_enum_where_clause_pass() {
alityTest::new(crates![crate core {
#![feature(non_lifetime_binders)]
trait A<T> where T: B { }

trait B { }

enum E where for<U> u32: A<U> { }

impl <T> B for T {}
}])
p_execute()
)
}

#[test]
ifetime_binder_in_enum_where_clause_fail() {
alityTest::new(crates![crate core {
trait A<T> where T: B { }

trait B { }

enum E where for<U> u32: A<U> { }
}])
(expect_test::expect![[r#"
the rule "check crate" at (mod.rs) failed because
  non lifetime binders require #![feature(non_lifetime_binders)]"#]])
}

#[test]
ifetime_binder_in_struct_where_clause_pass() {
alityTest::new(crates![crate core {
#![feature(non_lifetime_binders)]
trait A<T> where T: B { }

trait B { }

struct S<T> where for<U> u32: A<U> { }

impl <T> B for T {}
}])
p_execute()
)
}

#[test]
ifetime_binder_in_struct_where_clause_fail() {
alityTest::new(crates![crate core {
trait A<T> where T: B { }

trait B { }

struct S<T> where for<U> u32: A<U> { }
}])
(expect_test::expect![[r#"
the rule "check crate" at (mod.rs) failed because
  non lifetime binders require #![feature(non_lifetime_binders)]"#]])
}

#[test]
ime_binder_in_where_clause_without_feature_pass() {
alityTest::new(crates![crate core {
trait A<'b> { }

impl<'b> A<'b> for u32 { }

trait WellFormed where for<'b> u32: A<'b> { }
}])
p_execute()
)
}

#[test]
_adt_variant_dup() {
alityTest::new(crates![crate Foo {
enum Bar {
    Baz{},
    Baz{},
}

Source location: tests/basic_tests.rs:149

#[test]
fn non_lifetime_binder_in_trait_impl_where_clause_pass() {
    FormalityTest::new(crates![crate core {
        #![feature(non_lifetime_binders)]
        trait A<T> where T: B { }

        trait B { }

        impl<T> B for T where for<U> u32: A<U> { }
    }])
    .skip_execute()
    .ok()
}

Source location: tests/basic_tests.rs:179

#[test]
fn non_lifetime_binder_in_neg_trait_impl_where_clause_pass() {
    FormalityTest::new(crates![crate core {
        #![feature(non_lifetime_binders)]
        trait A<T> where T: B { }

        trait B { }

        impl<T> !A<T> for u32 where for<U> u32: A<U> { }

        impl <T> B for T {}
    }])
    .skip_execute()
    .ok()
}

Source location: tests/basic_tests.rs:209

#[test]
fn non_lifetime_binder_in_enum_where_clause_pass() {
    FormalityTest::new(crates![crate core {
        #![feature(non_lifetime_binders)]
        trait A<T> where T: B { }

        trait B { }

        enum E where for<U> u32: A<U> { }

        impl <T> B for T {}
    }])
    .skip_execute()
    .ok()
}

Source location: tests/basic_tests.rs:239

#[test]
fn non_lifetime_binder_in_struct_where_clause_pass() {
    FormalityTest::new(crates![crate core {
        #![feature(non_lifetime_binders)]
        trait A<T> where T: B { }

        trait B { }

        struct S<T> where for<U> u32: A<U> { }

        impl <T> B for T {}
    }])
    .skip_execute()
    .ok()
}

Proof trees omitted for the remaining 2 tests.

Source location: tests/basic_tests.rs:266

#[test]
fn lifetime_binder_in_where_clause_without_feature_pass() {
    FormalityTest::new(crates![crate core {
        trait A<'b> { }

        impl<'b> A<'b> for u32 { }

        trait WellFormed where for<'b> u32: A<'b> { }
    }])
    .skip_execute()
    .ok()
}