ruchy 4.2.1

    use proptest::proptest;

    proptest! {
        /// Property: Function never panics on any input
        #[test]
        fn test_new_never_panics(input: String) {
            // Limit input size to avoid timeout
            let _input = if input.len() > 100 { &input[..100] } else { &input[..] };
            // Function should not panic on any input
            let _ = std::panic::catch_unwind(|| {
                // Call function with various inputs
                // This is a template - adjust based on actual function signature
            });
        }
    }

    /* Sprint 86: Comprehensive inline tests for coverage improvement
    #[test]
    fn test_infer_comprehensive_expressions() {
        let mut ctx = InferenceContext::new();

        // Test all expression kinds
        let test_cases = vec![
            // Literals
            "42",
            "3.15",
            "true",
            "\"hello\"",
            "'c'",

            // Binary operations
            "1 + 2",
            "3 - 1",
            "4 * 5",
            "10 / 2",
            "7 % 3",

            // Comparisons
            "5 > 3",
            "2 < 8",
            "4 >= 4",
            "3 <= 5",
            "1 == 1",
            "2 != 3",

            // Logical
            "true && false",
            "true || false",

            // Unary
            "-5",
            "!true",

            // Collections
            "[1, 2, 3]",
            "(1, \"hello\")",

            // Function calls
            "print(\"test\")",

            // Lambda
            "x => x + 1",
            "(a, b) => a * b",
        ];

        for code in test_cases {
            let parser = crate::frontend::parser::Parser::new(code);
            if let Ok(ast) = parser.parse() {
                let _ = ctx.infer(&ast);
                // Reset recursion depth
                ctx.recursion_depth = 0;
            }
        }
    }

    #[test]
    fn test_helper_function_coverage() {
        let mut ctx = InferenceContext::new();

        // Test fresh_tyvar
        let tv1 = ctx.fresh_tyvar();
        let tv2 = ctx.fresh_tyvar();
        assert_ne!(tv1, tv2);
    } */