Positive coverage: prove_predicate / implies

4 tests exercised this rule:

Source location: crates/formality-rust/src/prove/test/eq_assumptions.rs:15 (all coverage from this test)

#[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/test/eq_assumptions.rs:24 (all coverage from this test)

#[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/test/eq_assumptions.rs:33 (all coverage from this test)

#[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/test/eq_partial_eq.rs:25 (all coverage from this test)

#[test]
fn eq_implies_partial_eq() {
    let assumptions: Predicates = Predicates::t();
    let goal: Predicate = 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: {} }}"]);
}

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