alef 0.34.12

Opinionated polyglot binding generator for Rust libraries
Documentation 
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use crate::core::ir::{ParamDef, TypeRef};
use ahash::AHashSet;

use super::params::gen_param_conversion_with_enums;
use super::return_handling::return_type_needs_non_serde_named;

#[test]
fn return_type_needs_non_serde_named_vec_non_serde() {
    let mut serde_names: AHashSet<String> = AHashSet::new();
    serde_names.insert("ExtractionResult".to_string());

    let vec_non_serde = TypeRef::Vec(Box::new(TypeRef::Named("PatternMatch".to_string())));
    assert!(
        return_type_needs_non_serde_named(&vec_non_serde, &serde_names),
        "Vec<PatternMatch> without Serialize must be detected as needing stub"
    );
}

#[test]
fn return_type_needs_non_serde_named_vec_serde_ok() {
    let mut serde_names: AHashSet<String> = AHashSet::new();
    serde_names.insert("ExtractionResult".to_string());

    let vec_serde = TypeRef::Vec(Box::new(TypeRef::Named("ExtractionResult".to_string())));
    assert!(
        !return_type_needs_non_serde_named(&vec_serde, &serde_names),
        "Vec<ExtractionResult> with Serialize must NOT be detected as needing stub"
    );
}

#[test]
fn return_type_needs_non_serde_named_primitive_vec_not_affected() {
    let serde_names: AHashSet<String> = AHashSet::new();
    assert!(!return_type_needs_non_serde_named(
        &TypeRef::Vec(Box::new(TypeRef::String)),
        &serde_names
    ));
    assert!(!return_type_needs_non_serde_named(
        &TypeRef::Vec(Box::new(TypeRef::Primitive(crate::core::ir::PrimitiveType::U64))),
        &serde_names
    ));
}

#[test]
fn named_param_is_mut_call_site_passes_local_directly() {
    let p = ParamDef {
        name: "result".to_string(),
        ty: TypeRef::Named("ExtractionResult".to_string()),
        optional: false,
        default: None,
        sanitized: false,
        typed_default: None,
        is_ref: false,
        is_mut: true,
        newtype_wrapper: None,
        original_type: None,
        map_is_ahash: false,
        map_key_is_cow: false,
        vec_inner_is_ref: false,
        map_is_btree: false,
        core_wrapper: crate::core::ir::CoreWrapper::None,
    };
    let rs = format!("{}_rs", p.name);
    let result = if p.is_mut {
        rs.clone()
    } else if p.is_ref {
        format!("&{rs}")
    } else {
        rs.clone()
    };
    assert_eq!(
        result, "result_rs",
        "is_mut Named param must pass local directly (already &mut T)"
    );
}

#[test]
fn enum_param_local_name_uses_param_name_not_type_name() {
    let mut enum_names: AHashSet<String> = AHashSet::new();
    enum_names.insert("RedactionStrategy".to_string());

    let p = ParamDef {
        name: "strategy".to_string(),
        ty: TypeRef::Named("RedactionStrategy".to_string()),
        optional: false,
        default: None,
        sanitized: false,
        typed_default: None,
        is_ref: false,
        is_mut: false,
        newtype_wrapper: None,
        original_type: None,
        map_is_ahash: false,
        map_key_is_cow: false,
        vec_inner_is_ref: false,
        map_is_btree: false,
        core_wrapper: crate::core::ir::CoreWrapper::None,
    };

    let output = gen_param_conversion_with_enums(&p, false, false, &TypeRef::Unit, "sample_crate", &enum_names);

    assert!(
        output.contains("let strategy_rs ="),
        "enum local must be named after param (strategy_rs), got:\n{output}"
    );
    assert!(
        output.contains("redaction_strategy_from_i32_rs(strategy)"),
        "enum helper must receive the FFI param name (strategy), got:\n{output}"
    );
}