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Positive coverage: prove_eq / alias

alias
LineCoverageSource
55N/A(let AliasTy { name: a_name, parameters: a_parameters } = a)
56N/A(let AliasTy { name: b_name, parameters: b_parameters } = b)
57✗(if a_name == b_name)
581(prove(decls, env, assumptions, Wcs::all_eq(a_parameters, b_parameters)) => env_c)
──────── ("alias")
601(prove_eq(decls, env, assumptions, TyData::AliasTy(a), TyData::AliasTy(b)) => env_c)

1 test exercised this rule:

Source location: tests/projection.rs:55

#[test]
fn normalize_basic() {
    test_where_clause(
        NORMALIZE_BASIC,
        "forall<T> exists<U> {} => { <Vec<T> as Iterator>::Item = U }",
    )
    .assert_ok(expect_test::expect!["{Constraints { env: Env { variables: [!ty_1, ?ty_2], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {?ty_2 => <Vec<!ty_1> as Iterator>::Item} }, Constraints { env: Env { variables: [!ty_1, ?ty_2], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {?ty_2 => !ty_1} }}"]);

    test_where_clause(
        NORMALIZE_BASIC,
        "forall<T> {} => { Iterator(Vec<T>), <Vec<T> as Iterator>::Item = T }",
    )
    .assert_ok(expect_test::expect!["{Constraints { env: Env { variables: [!ty_1], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]);

    test_where_clause(
        NORMALIZE_BASIC,
        "forall<T> { Iterator(T), <T as Iterator>::Item = Foo } => { <T as Iterator>::Item = Foo }",
    ).assert_ok(
        expect_test::expect!["{Constraints { env: Env { variables: [!ty_1], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]
    );

    test_where_clause(
        NORMALIZE_BASIC,
        "forall<T> exists<U> { Iterator(T) } => { <T as Iterator>::Item = U }",
    )
    .assert_ok(expect_test::expect!["{Constraints { env: Env { variables: [!ty_1, ?ty_2], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {?ty_2 => <!ty_1 as Iterator>::Item} }}"]);

    test_where_clause(
        NORMALIZE_BASIC,
        "forall<T> { Iterator(T) } => { <T as Iterator>::Item = <T as Iterator>::Item }",
    )
    .assert_ok(expect_test::expect!["{Constraints { env: Env { variables: [!ty_1], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {} }}"]);

    test_where_clause(
        NORMALIZE_BASIC,
        "forall<T> exists<U> { Iterator(T) } => { <T as Iterator>::Item = <U as Iterator>::Item }",
    ).assert_ok(
    expect_test::expect!["{Constraints { env: Env { variables: [!ty_1, ?ty_2], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {?ty_2 => !ty_1} }, Constraints { env: Env { variables: [!ty_1, ?ty_3, ?ty_2], bias: Soundness, pending: [], allow_pending_outlives: false }, known_true: true, substitution: {?ty_2 => Vec<<!ty_1 as Iterator>::Item>, ?ty_3 => <!ty_1 as Iterator>::Item} }}"]);
}
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