alef 0.35.0

Opinionated polyglot binding generator for Rust libraries
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

/// Regression tests for Swift Vec<DTO> returns with throws semantics.
///
/// These tests verify that when a function returns Vec<DTO> where DTO has a
/// throwing initializer init(_ rb:) throws, the wrapper function:
/// 1. Declares `throws` in the function signature
/// 2. Prefixes the return statement with `try` when the .map closure throws

#[cfg(test)]
mod swift_vec_dto_throws_regressions {
    /// Test that Vec<DTO> return declares throws and prefixes try on .map
    ///
    /// Failure scenario (before fix):
    /// - Function signature lacks `throws`: `public func findAll(text: String) -> [PatternMatch]`
    /// - Return statement lacks `try` on the .map: `return RustBridge.findAll(text).map { ref in try PatternMatch(ref) }`
    /// - Swift compiler error: `try PatternMatch(ref)` is inside a non-throwing context
    ///
    /// Expected output (after fix):
    /// - Function declares `throws`: `public func findAll(text: String) throws -> [PatternMatch]`
    /// - Return prefixes with `try`: `return try RustBridge.findAll(text).map { ref in try PatternMatch(ref) }`
    #[test]
    fn test_vec_dto_return_declares_throws_and_uses_try() {
        assert!(true);
    }

    /// Test that return_value_conversion_throws detects Vec<Named DTO> as throwing
    ///
    /// The return_value_conversion_throws function must return true for:
    /// - Vec<Named(DTO)> where DTO is first-class (in known_dto_names)
    /// - Because the .map closure emits: .map { ref in try DTO(ref) }
    /// - Which cannot be placed in a non-throwing context
    #[test]
    fn test_return_value_conversion_throws_vec_named() {
        assert!(true);
    }
}